blob: 631e1534575243d3f43a32f3da8f30a284b240ae [file] [log] [blame]
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09001/*
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002 * fs/f2fs/segment.c
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#include <linux/fs.h>
12#include <linux/f2fs_fs.h>
13#include <linux/bio.h>
14#include <linux/blkdev.h>
Geert Uytterhoeven690e4a32012-12-19 22:19:30 +010015#include <linux/prefetch.h>
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +090016#include <linux/kthread.h>
Chao Yu74de5932013-11-22 09:09:59 +080017#include <linux/swap.h>
Jaegeuk Kim60b99b42015-10-05 14:49:57 -070018#include <linux/timer.h>
Jaegeuk Kim1d7be272017-05-17 10:36:58 -070019#include <linux/freezer.h>
Jaegeuk Kim1eb1ef42017-09-09 12:03:23 -070020#include <linux/sched/signal.h>
Jaegeuk Kim351df4b2012-11-02 17:09:16 +090021
22#include "f2fs.h"
23#include "segment.h"
24#include "node.h"
Jaegeuk Kim5f656542017-08-15 21:27:19 -070025#include "gc.h"
Jaegeuk Kim9e4ded32014-12-17 19:58:58 -080026#include "trace.h"
Namjae Jeon6ec178d2013-04-23 17:51:43 +090027#include <trace/events/f2fs.h>
Jaegeuk Kim351df4b2012-11-02 17:09:16 +090028
Changman Lee9a7f1432013-11-15 10:42:51 +090029#define __reverse_ffz(x) __reverse_ffs(~(x))
30
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +090031static struct kmem_cache *discard_entry_slab;
Jaegeuk Kimb01a9202017-01-09 14:13:03 -080032static struct kmem_cache *discard_cmd_slab;
Chao Yu184a5cd2014-09-04 18:13:01 +080033static struct kmem_cache *sit_entry_set_slab;
Jaegeuk Kim88b88a62014-10-06 17:39:50 -070034static struct kmem_cache *inmem_entry_slab;
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +090035
Jaegeuk Kimf96999c2015-10-20 15:17:19 -070036static unsigned long __reverse_ulong(unsigned char *str)
37{
38 unsigned long tmp = 0;
39 int shift = 24, idx = 0;
40
41#if BITS_PER_LONG == 64
42 shift = 56;
43#endif
44 while (shift >= 0) {
45 tmp |= (unsigned long)str[idx++] << shift;
46 shift -= BITS_PER_BYTE;
47 }
48 return tmp;
49}
50
Changman Lee9a7f1432013-11-15 10:42:51 +090051/*
52 * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since
53 * MSB and LSB are reversed in a byte by f2fs_set_bit.
54 */
55static inline unsigned long __reverse_ffs(unsigned long word)
56{
57 int num = 0;
58
59#if BITS_PER_LONG == 64
Jaegeuk Kimf96999c2015-10-20 15:17:19 -070060 if ((word & 0xffffffff00000000UL) == 0)
Changman Lee9a7f1432013-11-15 10:42:51 +090061 num += 32;
Jaegeuk Kimf96999c2015-10-20 15:17:19 -070062 else
Changman Lee9a7f1432013-11-15 10:42:51 +090063 word >>= 32;
Changman Lee9a7f1432013-11-15 10:42:51 +090064#endif
Jaegeuk Kimf96999c2015-10-20 15:17:19 -070065 if ((word & 0xffff0000) == 0)
Changman Lee9a7f1432013-11-15 10:42:51 +090066 num += 16;
Jaegeuk Kimf96999c2015-10-20 15:17:19 -070067 else
Changman Lee9a7f1432013-11-15 10:42:51 +090068 word >>= 16;
Jaegeuk Kimf96999c2015-10-20 15:17:19 -070069
70 if ((word & 0xff00) == 0)
Changman Lee9a7f1432013-11-15 10:42:51 +090071 num += 8;
Jaegeuk Kimf96999c2015-10-20 15:17:19 -070072 else
Changman Lee9a7f1432013-11-15 10:42:51 +090073 word >>= 8;
Jaegeuk Kimf96999c2015-10-20 15:17:19 -070074
Changman Lee9a7f1432013-11-15 10:42:51 +090075 if ((word & 0xf0) == 0)
76 num += 4;
77 else
78 word >>= 4;
Jaegeuk Kimf96999c2015-10-20 15:17:19 -070079
Changman Lee9a7f1432013-11-15 10:42:51 +090080 if ((word & 0xc) == 0)
81 num += 2;
82 else
83 word >>= 2;
Jaegeuk Kimf96999c2015-10-20 15:17:19 -070084
Changman Lee9a7f1432013-11-15 10:42:51 +090085 if ((word & 0x2) == 0)
86 num += 1;
87 return num;
88}
89
90/*
arter97e1c42042014-08-06 23:22:50 +090091 * __find_rev_next(_zero)_bit is copied from lib/find_next_bit.c because
Changman Lee9a7f1432013-11-15 10:42:51 +090092 * f2fs_set_bit makes MSB and LSB reversed in a byte.
Fan Li692223d2015-11-12 08:43:04 +080093 * @size must be integral times of unsigned long.
Changman Lee9a7f1432013-11-15 10:42:51 +090094 * Example:
Jaegeuk Kimf96999c2015-10-20 15:17:19 -070095 * MSB <--> LSB
96 * f2fs_set_bit(0, bitmap) => 1000 0000
97 * f2fs_set_bit(7, bitmap) => 0000 0001
Changman Lee9a7f1432013-11-15 10:42:51 +090098 */
99static unsigned long __find_rev_next_bit(const unsigned long *addr,
100 unsigned long size, unsigned long offset)
101{
102 const unsigned long *p = addr + BIT_WORD(offset);
Fan Li692223d2015-11-12 08:43:04 +0800103 unsigned long result = size;
Changman Lee9a7f1432013-11-15 10:42:51 +0900104 unsigned long tmp;
Changman Lee9a7f1432013-11-15 10:42:51 +0900105
106 if (offset >= size)
107 return size;
108
Fan Li692223d2015-11-12 08:43:04 +0800109 size -= (offset & ~(BITS_PER_LONG - 1));
Changman Lee9a7f1432013-11-15 10:42:51 +0900110 offset %= BITS_PER_LONG;
Changman Lee9a7f1432013-11-15 10:42:51 +0900111
Fan Li692223d2015-11-12 08:43:04 +0800112 while (1) {
113 if (*p == 0)
114 goto pass;
Jaegeuk Kimf96999c2015-10-20 15:17:19 -0700115
Jaegeuk Kimf96999c2015-10-20 15:17:19 -0700116 tmp = __reverse_ulong((unsigned char *)p);
Fan Li692223d2015-11-12 08:43:04 +0800117
118 tmp &= ~0UL >> offset;
119 if (size < BITS_PER_LONG)
120 tmp &= (~0UL << (BITS_PER_LONG - size));
Changman Lee9a7f1432013-11-15 10:42:51 +0900121 if (tmp)
Fan Li692223d2015-11-12 08:43:04 +0800122 goto found;
123pass:
124 if (size <= BITS_PER_LONG)
125 break;
Changman Lee9a7f1432013-11-15 10:42:51 +0900126 size -= BITS_PER_LONG;
Fan Li692223d2015-11-12 08:43:04 +0800127 offset = 0;
Jaegeuk Kimf96999c2015-10-20 15:17:19 -0700128 p++;
Changman Lee9a7f1432013-11-15 10:42:51 +0900129 }
Fan Li692223d2015-11-12 08:43:04 +0800130 return result;
131found:
132 return result - size + __reverse_ffs(tmp);
Changman Lee9a7f1432013-11-15 10:42:51 +0900133}
134
135static unsigned long __find_rev_next_zero_bit(const unsigned long *addr,
136 unsigned long size, unsigned long offset)
137{
138 const unsigned long *p = addr + BIT_WORD(offset);
Jaegeuk Kim80609442015-12-04 16:51:13 -0800139 unsigned long result = size;
Changman Lee9a7f1432013-11-15 10:42:51 +0900140 unsigned long tmp;
Changman Lee9a7f1432013-11-15 10:42:51 +0900141
142 if (offset >= size)
143 return size;
144
Jaegeuk Kim80609442015-12-04 16:51:13 -0800145 size -= (offset & ~(BITS_PER_LONG - 1));
Changman Lee9a7f1432013-11-15 10:42:51 +0900146 offset %= BITS_PER_LONG;
Changman Lee9a7f1432013-11-15 10:42:51 +0900147
Jaegeuk Kim80609442015-12-04 16:51:13 -0800148 while (1) {
149 if (*p == ~0UL)
150 goto pass;
Jaegeuk Kimf96999c2015-10-20 15:17:19 -0700151
Jaegeuk Kimf96999c2015-10-20 15:17:19 -0700152 tmp = __reverse_ulong((unsigned char *)p);
Jaegeuk Kim80609442015-12-04 16:51:13 -0800153
154 if (offset)
155 tmp |= ~0UL << (BITS_PER_LONG - offset);
156 if (size < BITS_PER_LONG)
157 tmp |= ~0UL >> size;
Jaegeuk Kimf96999c2015-10-20 15:17:19 -0700158 if (tmp != ~0UL)
Jaegeuk Kim80609442015-12-04 16:51:13 -0800159 goto found;
160pass:
161 if (size <= BITS_PER_LONG)
162 break;
Changman Lee9a7f1432013-11-15 10:42:51 +0900163 size -= BITS_PER_LONG;
Jaegeuk Kim80609442015-12-04 16:51:13 -0800164 offset = 0;
Jaegeuk Kimf96999c2015-10-20 15:17:19 -0700165 p++;
Changman Lee9a7f1432013-11-15 10:42:51 +0900166 }
Jaegeuk Kim80609442015-12-04 16:51:13 -0800167 return result;
168found:
169 return result - size + __reverse_ffz(tmp);
Changman Lee9a7f1432013-11-15 10:42:51 +0900170}
171
Chao Yu4d57b862018-05-30 00:20:41 +0800172bool f2fs_need_SSR(struct f2fs_sb_info *sbi)
Jaegeuk Kimb3a97a22017-09-09 11:11:04 -0700173{
174 int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES);
175 int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS);
176 int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA);
177
178 if (test_opt(sbi, LFS))
179 return false;
Jaegeuk Kim5b0e9532018-05-07 14:22:40 -0700180 if (sbi->gc_mode == GC_URGENT)
Jaegeuk Kimb3a97a22017-09-09 11:11:04 -0700181 return true;
182
183 return free_sections(sbi) <= (node_secs + 2 * dent_secs + imeta_secs +
Chao Yua2a12b62017-10-28 16:52:33 +0800184 SM_I(sbi)->min_ssr_sections + reserved_sections(sbi));
Jaegeuk Kimb3a97a22017-09-09 11:11:04 -0700185}
186
Chao Yu4d57b862018-05-30 00:20:41 +0800187void f2fs_register_inmem_page(struct inode *inode, struct page *page)
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700188{
Jaegeuk Kim57864ae2017-10-18 19:05:57 -0700189 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700190 struct f2fs_inode_info *fi = F2FS_I(inode);
191 struct inmem_pages *new;
Jaegeuk Kim9be32d72014-12-05 10:39:49 -0800192
Jaegeuk Kim9e4ded32014-12-17 19:58:58 -0800193 f2fs_trace_pid(page);
Jaegeuk Kim0722b102014-12-05 11:58:02 -0800194
Chao Yudecd36b2015-08-07 18:42:09 +0800195 set_page_private(page, (unsigned long)ATOMIC_WRITTEN_PAGE);
196 SetPagePrivate(page);
197
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700198 new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS);
199
200 /* add atomic page indices to the list */
201 new->page = page;
202 INIT_LIST_HEAD(&new->list);
Chao Yudecd36b2015-08-07 18:42:09 +0800203
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700204 /* increase reference count with clean state */
205 mutex_lock(&fi->inmem_lock);
206 get_page(page);
207 list_add_tail(&new->list, &fi->inmem_pages);
Jaegeuk Kim57864ae2017-10-18 19:05:57 -0700208 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
209 if (list_empty(&fi->inmem_ilist))
210 list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]);
211 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
Jaegeuk Kim8dcf2ff72014-12-05 17:18:15 -0800212 inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700213 mutex_unlock(&fi->inmem_lock);
Jaegeuk Kim8ce67cb2015-03-17 17:58:08 -0700214
215 trace_f2fs_register_inmem_page(page, INMEM);
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700216}
217
Chao Yu28bc1062016-02-06 14:40:34 +0800218static int __revoke_inmem_pages(struct inode *inode,
219 struct list_head *head, bool drop, bool recover)
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700220{
Chao Yu28bc1062016-02-06 14:40:34 +0800221 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700222 struct inmem_pages *cur, *tmp;
Chao Yu28bc1062016-02-06 14:40:34 +0800223 int err = 0;
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700224
Chao Yu29b96b52016-02-06 14:38:29 +0800225 list_for_each_entry_safe(cur, tmp, head, list) {
Chao Yu28bc1062016-02-06 14:40:34 +0800226 struct page *page = cur->page;
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700227
Chao Yu28bc1062016-02-06 14:40:34 +0800228 if (drop)
229 trace_f2fs_commit_inmem_page(page, INMEM_DROP);
230
231 lock_page(page);
232
Chao Yue5e57322018-04-23 10:36:13 +0800233 f2fs_wait_on_page_writeback(page, DATA, true);
234
Chao Yu28bc1062016-02-06 14:40:34 +0800235 if (recover) {
236 struct dnode_of_data dn;
237 struct node_info ni;
238
239 trace_f2fs_commit_inmem_page(page, INMEM_REVOKE);
Chao Yu7f2b4e82017-08-08 19:09:08 +0800240retry:
Chao Yu28bc1062016-02-06 14:40:34 +0800241 set_new_dnode(&dn, inode, NULL, NULL, 0);
Chao Yu4d57b862018-05-30 00:20:41 +0800242 err = f2fs_get_dnode_of_data(&dn, page->index,
243 LOOKUP_NODE);
Chao Yu7f2b4e82017-08-08 19:09:08 +0800244 if (err) {
245 if (err == -ENOMEM) {
246 congestion_wait(BLK_RW_ASYNC, HZ/50);
247 cond_resched();
248 goto retry;
249 }
Chao Yu28bc1062016-02-06 14:40:34 +0800250 err = -EAGAIN;
251 goto next;
252 }
Chao Yu77357302018-07-17 00:02:17 +0800253
254 err = f2fs_get_node_info(sbi, dn.nid, &ni);
255 if (err) {
256 f2fs_put_dnode(&dn);
257 return err;
258 }
259
Daeho Jeongf1d25642018-01-10 16:49:10 +0900260 if (cur->old_addr == NEW_ADDR) {
Chao Yu4d57b862018-05-30 00:20:41 +0800261 f2fs_invalidate_blocks(sbi, dn.data_blkaddr);
Daeho Jeongf1d25642018-01-10 16:49:10 +0900262 f2fs_update_data_blkaddr(&dn, NEW_ADDR);
263 } else
264 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
Chao Yu28bc1062016-02-06 14:40:34 +0800265 cur->old_addr, ni.version, true, true);
266 f2fs_put_dnode(&dn);
267 }
268next:
Jaegeuk Kim63c52d72016-04-12 14:11:03 -0700269 /* we don't need to invalidate this in the sccessful status */
270 if (drop || recover)
271 ClearPageUptodate(page);
Chao Yu28bc1062016-02-06 14:40:34 +0800272 set_page_private(page, 0);
Chao Yuc81ced02016-04-29 20:13:36 +0800273 ClearPagePrivate(page);
Chao Yu28bc1062016-02-06 14:40:34 +0800274 f2fs_put_page(page, 1);
Chao Yudecd36b2015-08-07 18:42:09 +0800275
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700276 list_del(&cur->list);
277 kmem_cache_free(inmem_entry_slab, cur);
Jaegeuk Kim8dcf2ff72014-12-05 17:18:15 -0800278 dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700279 }
Chao Yu28bc1062016-02-06 14:40:34 +0800280 return err;
Chao Yu29b96b52016-02-06 14:38:29 +0800281}
282
Chao Yu4d57b862018-05-30 00:20:41 +0800283void f2fs_drop_inmem_pages_all(struct f2fs_sb_info *sbi, bool gc_failure)
Jaegeuk Kim57864ae2017-10-18 19:05:57 -0700284{
285 struct list_head *head = &sbi->inode_list[ATOMIC_FILE];
286 struct inode *inode;
287 struct f2fs_inode_info *fi;
288next:
289 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
290 if (list_empty(head)) {
291 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
292 return;
293 }
294 fi = list_first_entry(head, struct f2fs_inode_info, inmem_ilist);
295 inode = igrab(&fi->vfs_inode);
296 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
297
298 if (inode) {
Chao Yu2ef79ec2018-05-07 20:28:54 +0800299 if (gc_failure) {
300 if (fi->i_gc_failures[GC_FAILURE_ATOMIC])
301 goto drop;
302 goto skip;
303 }
304drop:
305 set_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
Chao Yu4d57b862018-05-30 00:20:41 +0800306 f2fs_drop_inmem_pages(inode);
Jaegeuk Kim57864ae2017-10-18 19:05:57 -0700307 iput(inode);
308 }
Chao Yu2ef79ec2018-05-07 20:28:54 +0800309skip:
Jaegeuk Kim57864ae2017-10-18 19:05:57 -0700310 congestion_wait(BLK_RW_ASYNC, HZ/50);
311 cond_resched();
312 goto next;
313}
314
Chao Yu4d57b862018-05-30 00:20:41 +0800315void f2fs_drop_inmem_pages(struct inode *inode)
Chao Yu29b96b52016-02-06 14:38:29 +0800316{
Jaegeuk Kim57864ae2017-10-18 19:05:57 -0700317 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Chao Yu29b96b52016-02-06 14:38:29 +0800318 struct f2fs_inode_info *fi = F2FS_I(inode);
319
320 mutex_lock(&fi->inmem_lock);
Chao Yu28bc1062016-02-06 14:40:34 +0800321 __revoke_inmem_pages(inode, &fi->inmem_pages, true, false);
Jaegeuk Kim57864ae2017-10-18 19:05:57 -0700322 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
323 if (!list_empty(&fi->inmem_ilist))
324 list_del_init(&fi->inmem_ilist);
325 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
Chao Yu29b96b52016-02-06 14:38:29 +0800326 mutex_unlock(&fi->inmem_lock);
Chao Yu5fe45742017-01-07 18:50:26 +0800327
328 clear_inode_flag(inode, FI_ATOMIC_FILE);
Chao Yu2ef79ec2018-05-07 20:28:54 +0800329 fi->i_gc_failures[GC_FAILURE_ATOMIC] = 0;
Chao Yu5fe45742017-01-07 18:50:26 +0800330 stat_dec_atomic_write(inode);
Chao Yu29b96b52016-02-06 14:38:29 +0800331}
332
Chao Yu4d57b862018-05-30 00:20:41 +0800333void f2fs_drop_inmem_page(struct inode *inode, struct page *page)
Jaegeuk Kim8c242db2017-03-17 09:55:52 +0800334{
335 struct f2fs_inode_info *fi = F2FS_I(inode);
336 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
337 struct list_head *head = &fi->inmem_pages;
338 struct inmem_pages *cur = NULL;
339
340 f2fs_bug_on(sbi, !IS_ATOMIC_WRITTEN_PAGE(page));
341
342 mutex_lock(&fi->inmem_lock);
343 list_for_each_entry(cur, head, list) {
344 if (cur->page == page)
345 break;
346 }
347
Sheng Yongd0891e82018-04-17 17:12:27 +0800348 f2fs_bug_on(sbi, list_empty(head) || cur->page != page);
Jaegeuk Kim8c242db2017-03-17 09:55:52 +0800349 list_del(&cur->list);
350 mutex_unlock(&fi->inmem_lock);
351
352 dec_page_count(sbi, F2FS_INMEM_PAGES);
353 kmem_cache_free(inmem_entry_slab, cur);
354
355 ClearPageUptodate(page);
356 set_page_private(page, 0);
357 ClearPagePrivate(page);
358 f2fs_put_page(page, 0);
359
360 trace_f2fs_commit_inmem_page(page, INMEM_INVALIDATE);
361}
362
Chao Yu4d57b862018-05-30 00:20:41 +0800363static int __f2fs_commit_inmem_pages(struct inode *inode)
Chao Yu29b96b52016-02-06 14:38:29 +0800364{
365 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
366 struct f2fs_inode_info *fi = F2FS_I(inode);
367 struct inmem_pages *cur, *tmp;
368 struct f2fs_io_info fio = {
369 .sbi = sbi,
Chao Yu39d787b2017-09-29 13:59:38 +0800370 .ino = inode->i_ino,
Chao Yu29b96b52016-02-06 14:38:29 +0800371 .type = DATA,
Mike Christie04d328d2016-06-05 14:31:55 -0500372 .op = REQ_OP_WRITE,
Christoph Hellwig70fd7612016-11-01 07:40:10 -0600373 .op_flags = REQ_SYNC | REQ_PRIO,
Chao Yub0af6d42017-08-02 23:21:48 +0800374 .io_type = FS_DATA_IO,
Chao Yu29b96b52016-02-06 14:38:29 +0800375 };
Chao Yucf52b272018-04-23 10:36:14 +0800376 struct list_head revoke_list;
Jaegeuk Kim942fd312017-02-01 16:51:22 -0800377 pgoff_t last_idx = ULONG_MAX;
Chao Yu29b96b52016-02-06 14:38:29 +0800378 int err = 0;
379
Chao Yucf52b272018-04-23 10:36:14 +0800380 INIT_LIST_HEAD(&revoke_list);
381
Chao Yu29b96b52016-02-06 14:38:29 +0800382 list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) {
Chao Yu28bc1062016-02-06 14:40:34 +0800383 struct page *page = cur->page;
384
385 lock_page(page);
386 if (page->mapping == inode->i_mapping) {
387 trace_f2fs_commit_inmem_page(page, INMEM);
388
389 set_page_dirty(page);
390 f2fs_wait_on_page_writeback(page, DATA, true);
Chao Yu933439c2016-10-11 22:57:01 +0800391 if (clear_page_dirty_for_io(page)) {
Chao Yu29b96b52016-02-06 14:38:29 +0800392 inode_dec_dirty_pages(inode);
Chao Yu4d57b862018-05-30 00:20:41 +0800393 f2fs_remove_dirty_inode(inode);
Chao Yu933439c2016-10-11 22:57:01 +0800394 }
Jaegeuk Kim640cc182017-07-19 10:59:55 -0700395retry:
Chao Yu28bc1062016-02-06 14:40:34 +0800396 fio.page = page;
Hou Pengyange959c8f2017-04-25 12:45:13 +0000397 fio.old_blkaddr = NULL_ADDR;
Jaegeuk Kim4d978072017-04-26 11:11:12 -0700398 fio.encrypted_page = NULL;
Jaegeuk Kimcc156202017-05-12 13:51:34 -0700399 fio.need_lock = LOCK_DONE;
Chao Yu4d57b862018-05-30 00:20:41 +0800400 err = f2fs_do_write_data_page(&fio);
Chao Yu29b96b52016-02-06 14:38:29 +0800401 if (err) {
Jaegeuk Kim640cc182017-07-19 10:59:55 -0700402 if (err == -ENOMEM) {
403 congestion_wait(BLK_RW_ASYNC, HZ/50);
404 cond_resched();
405 goto retry;
406 }
Chao Yu28bc1062016-02-06 14:40:34 +0800407 unlock_page(page);
Chao Yu29b96b52016-02-06 14:38:29 +0800408 break;
409 }
Chao Yu28bc1062016-02-06 14:40:34 +0800410 /* record old blkaddr for revoking */
411 cur->old_addr = fio.old_blkaddr;
Jaegeuk Kim942fd312017-02-01 16:51:22 -0800412 last_idx = page->index;
Chao Yu29b96b52016-02-06 14:38:29 +0800413 }
Chao Yu28bc1062016-02-06 14:40:34 +0800414 unlock_page(page);
Chao Yucf52b272018-04-23 10:36:14 +0800415 list_move_tail(&cur->list, &revoke_list);
Chao Yu29b96b52016-02-06 14:38:29 +0800416 }
417
Jaegeuk Kim942fd312017-02-01 16:51:22 -0800418 if (last_idx != ULONG_MAX)
Jaegeuk Kimb9109b02017-05-10 11:28:38 -0700419 f2fs_submit_merged_write_cond(sbi, inode, 0, last_idx, DATA);
Chao Yu28bc1062016-02-06 14:40:34 +0800420
Chao Yu28bc1062016-02-06 14:40:34 +0800421 if (err) {
Chao Yu28bc1062016-02-06 14:40:34 +0800422 /*
423 * try to revoke all committed pages, but still we could fail
424 * due to no memory or other reason, if that happened, EAGAIN
425 * will be returned, which means in such case, transaction is
426 * already not integrity, caller should use journal to do the
427 * recovery or rewrite & commit last transaction. For other
428 * error number, revoking was done by filesystem itself.
429 */
Chao Yucf52b272018-04-23 10:36:14 +0800430 err = __revoke_inmem_pages(inode, &revoke_list, false, true);
Chao Yu28bc1062016-02-06 14:40:34 +0800431
432 /* drop all uncommitted pages */
433 __revoke_inmem_pages(inode, &fi->inmem_pages, true, false);
Chao Yucf52b272018-04-23 10:36:14 +0800434 } else {
435 __revoke_inmem_pages(inode, &revoke_list, false, false);
Chao Yu28bc1062016-02-06 14:40:34 +0800436 }
Chao Yucf52b272018-04-23 10:36:14 +0800437
438 return err;
439}
440
Chao Yu4d57b862018-05-30 00:20:41 +0800441int f2fs_commit_inmem_pages(struct inode *inode)
Chao Yucf52b272018-04-23 10:36:14 +0800442{
443 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
444 struct f2fs_inode_info *fi = F2FS_I(inode);
445 int err;
446
447 f2fs_balance_fs(sbi, true);
448 f2fs_lock_op(sbi);
449
450 set_inode_flag(inode, FI_ATOMIC_COMMIT);
451
452 mutex_lock(&fi->inmem_lock);
Chao Yu4d57b862018-05-30 00:20:41 +0800453 err = __f2fs_commit_inmem_pages(inode);
Chao Yucf52b272018-04-23 10:36:14 +0800454
Jaegeuk Kim57864ae2017-10-18 19:05:57 -0700455 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
456 if (!list_empty(&fi->inmem_ilist))
457 list_del_init(&fi->inmem_ilist);
458 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700459 mutex_unlock(&fi->inmem_lock);
460
Chao Yu5fe45742017-01-07 18:50:26 +0800461 clear_inode_flag(inode, FI_ATOMIC_COMMIT);
462
Chao Yu29b96b52016-02-06 14:38:29 +0800463 f2fs_unlock_op(sbi);
Jaegeuk Kimedb27de2015-07-25 00:52:52 -0700464 return err;
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700465}
466
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +0900467/*
Jaegeuk Kim351df4b2012-11-02 17:09:16 +0900468 * This function balances dirty node and dentry pages.
469 * In addition, it controls garbage collection.
470 */
Jaegeuk Kim2c4db1a2016-01-07 14:15:04 -0800471void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +0900472{
Chao Yu0f348022016-09-26 19:45:55 +0800473#ifdef CONFIG_F2FS_FAULT_INJECTION
Chao Yu55523512017-02-25 11:08:28 +0800474 if (time_to_inject(sbi, FAULT_CHECKPOINT)) {
475 f2fs_show_injection_info(FAULT_CHECKPOINT);
Chao Yu0f348022016-09-26 19:45:55 +0800476 f2fs_stop_checkpoint(sbi, false);
Chao Yu55523512017-02-25 11:08:28 +0800477 }
Chao Yu0f348022016-09-26 19:45:55 +0800478#endif
479
Jaegeuk Kime589c2c2016-06-02 15:24:24 -0700480 /* balance_fs_bg is able to be pending */
Jaegeuk Kima7881892017-04-20 13:51:57 -0700481 if (need && excess_cached_nats(sbi))
Jaegeuk Kime589c2c2016-06-02 15:24:24 -0700482 f2fs_balance_fs_bg(sbi);
483
Jaegeuk Kim351df4b2012-11-02 17:09:16 +0900484 /*
Jaegeuk Kim029cd282012-12-21 17:20:21 +0900485 * We should do GC or end up with checkpoint, if there are so many dirty
486 * dir/node pages without enough free segments.
Jaegeuk Kim351df4b2012-11-02 17:09:16 +0900487 */
Jaegeuk Kim7f3037a2016-09-01 12:02:51 -0700488 if (has_not_enough_free_secs(sbi, 0, 0)) {
Jaegeuk Kim351df4b2012-11-02 17:09:16 +0900489 mutex_lock(&sbi->gc_mutex);
Jaegeuk Kime066b832017-04-13 15:17:00 -0700490 f2fs_gc(sbi, false, false, NULL_SEGNO);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +0900491 }
492}
493
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +0900494void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi)
495{
Chao Yu64c74a72018-05-26 18:03:34 +0800496 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
497 return;
498
Chao Yu1dcc3362015-02-05 17:57:31 +0800499 /* try to shrink extent cache when there is no enough memory */
Chao Yu4d57b862018-05-30 00:20:41 +0800500 if (!f2fs_available_free_memory(sbi, EXTENT_CACHE))
Jaegeuk Kim554df792015-06-19 13:41:23 -0700501 f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER);
Chao Yu1dcc3362015-02-05 17:57:31 +0800502
Jaegeuk Kim1b38dc82015-06-19 15:36:07 -0700503 /* check the # of cached NAT entries */
Chao Yu4d57b862018-05-30 00:20:41 +0800504 if (!f2fs_available_free_memory(sbi, NAT_ENTRIES))
505 f2fs_try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK);
Jaegeuk Kim1b38dc82015-06-19 15:36:07 -0700506
Chao Yu4d57b862018-05-30 00:20:41 +0800507 if (!f2fs_available_free_memory(sbi, FREE_NIDS))
508 f2fs_try_to_free_nids(sbi, MAX_FREE_NIDS);
Jaegeuk Kimad4edb82016-06-16 16:41:49 -0700509 else
Chao Yu4d57b862018-05-30 00:20:41 +0800510 f2fs_build_free_nids(sbi, false, false);
Chao Yu31696582015-07-28 18:33:46 +0800511
Jaegeuk Kim1c0f4bf2017-05-01 18:09:44 -0700512 if (!is_idle(sbi) && !excess_dirty_nats(sbi))
Jaegeuk Kimf455c8a2016-12-05 11:37:14 -0800513 return;
Jaegeuk Kime5e7ea32014-11-06 15:24:46 -0800514
Jaegeuk Kim88a70a62014-12-10 15:20:48 -0800515 /* checkpoint is the only way to shrink partial cached entries */
Chao Yu4d57b862018-05-30 00:20:41 +0800516 if (!f2fs_available_free_memory(sbi, NAT_ENTRIES) ||
517 !f2fs_available_free_memory(sbi, INO_ENTRIES) ||
Chao Yu7d768d22016-01-18 18:31:18 +0800518 excess_prefree_segs(sbi) ||
519 excess_dirty_nats(sbi) ||
Jaegeuk Kimf455c8a2016-12-05 11:37:14 -0800520 f2fs_time_over(sbi, CP_TIME)) {
Chao Yue9f5b8b2016-02-14 18:54:33 +0800521 if (test_opt(sbi, DATA_FLUSH)) {
522 struct blk_plug plug;
523
524 blk_start_plug(&plug);
Chao Yu4d57b862018-05-30 00:20:41 +0800525 f2fs_sync_dirty_inodes(sbi, FILE_INODE);
Chao Yue9f5b8b2016-02-14 18:54:33 +0800526 blk_finish_plug(&plug);
527 }
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +0900528 f2fs_sync_fs(sbi->sb, true);
Jaegeuk Kim42190d22016-01-09 13:45:17 -0800529 stat_inc_bg_cp_count(sbi->stat_info);
Chao Yu36b35a02015-12-17 17:13:28 +0800530 }
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +0900531}
532
Kinglong Mee20fda56b2017-03-04 22:13:10 +0800533static int __submit_flush_wait(struct f2fs_sb_info *sbi,
534 struct block_device *bdev)
Jaegeuk Kim3c62be12016-10-06 19:02:05 -0700535{
Chao Yud62fe972017-10-28 16:52:31 +0800536 struct bio *bio = f2fs_bio_alloc(sbi, 0, true);
Jaegeuk Kim3c62be12016-10-06 19:02:05 -0700537 int ret;
538
Jan Kara3adc5fcb2017-05-02 17:03:47 +0200539 bio->bi_opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH;
Christoph Hellwig74d46992017-08-23 19:10:32 +0200540 bio_set_dev(bio, bdev);
Jaegeuk Kim3c62be12016-10-06 19:02:05 -0700541 ret = submit_bio_wait(bio);
542 bio_put(bio);
Kinglong Mee20fda56b2017-03-04 22:13:10 +0800543
544 trace_f2fs_issue_flush(bdev, test_opt(sbi, NOBARRIER),
545 test_opt(sbi, FLUSH_MERGE), ret);
Jaegeuk Kim3c62be12016-10-06 19:02:05 -0700546 return ret;
547}
548
Chao Yu39d787b2017-09-29 13:59:38 +0800549static int submit_flush_wait(struct f2fs_sb_info *sbi, nid_t ino)
Jaegeuk Kim3c62be12016-10-06 19:02:05 -0700550{
Chao Yu39d787b2017-09-29 13:59:38 +0800551 int ret = 0;
Jaegeuk Kim3c62be12016-10-06 19:02:05 -0700552 int i;
553
Chao Yu39d787b2017-09-29 13:59:38 +0800554 if (!sbi->s_ndevs)
555 return __submit_flush_wait(sbi, sbi->sb->s_bdev);
Kinglong Mee20fda56b2017-03-04 22:13:10 +0800556
Chao Yu39d787b2017-09-29 13:59:38 +0800557 for (i = 0; i < sbi->s_ndevs; i++) {
Chao Yu4d57b862018-05-30 00:20:41 +0800558 if (!f2fs_is_dirty_device(sbi, ino, i, FLUSH_INO))
Chao Yu39d787b2017-09-29 13:59:38 +0800559 continue;
Kinglong Mee20fda56b2017-03-04 22:13:10 +0800560 ret = __submit_flush_wait(sbi, FDEV(i).bdev);
561 if (ret)
562 break;
Jaegeuk Kim3c62be12016-10-06 19:02:05 -0700563 }
564 return ret;
565}
566
Gu Zheng2163d192014-04-27 14:21:33 +0800567static int issue_flush_thread(void *data)
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900568{
569 struct f2fs_sb_info *sbi = data;
Jaegeuk Kimb01a9202017-01-09 14:13:03 -0800570 struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800571 wait_queue_head_t *q = &fcc->flush_wait_queue;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900572repeat:
573 if (kthread_should_stop())
574 return 0;
575
Chao Yudc6febb2017-07-22 08:52:23 +0800576 sb_start_intwrite(sbi->sb);
577
Gu Zheng721bd4d2014-09-05 18:31:00 +0800578 if (!llist_empty(&fcc->issue_list)) {
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900579 struct flush_cmd *cmd, *next;
580 int ret;
581
Gu Zheng721bd4d2014-09-05 18:31:00 +0800582 fcc->dispatch_list = llist_del_all(&fcc->issue_list);
583 fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list);
584
Chao Yu39d787b2017-09-29 13:59:38 +0800585 cmd = llist_entry(fcc->dispatch_list, struct flush_cmd, llnode);
586
587 ret = submit_flush_wait(sbi, cmd->ino);
Chao Yu8b8dd652017-03-25 17:19:58 +0800588 atomic_inc(&fcc->issued_flush);
589
Gu Zheng721bd4d2014-09-05 18:31:00 +0800590 llist_for_each_entry_safe(cmd, next,
591 fcc->dispatch_list, llnode) {
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900592 cmd->ret = ret;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900593 complete(&cmd->wait);
594 }
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800595 fcc->dispatch_list = NULL;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900596 }
597
Chao Yudc6febb2017-07-22 08:52:23 +0800598 sb_end_intwrite(sbi->sb);
599
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800600 wait_event_interruptible(*q,
Gu Zheng721bd4d2014-09-05 18:31:00 +0800601 kthread_should_stop() || !llist_empty(&fcc->issue_list));
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900602 goto repeat;
603}
604
Chao Yu39d787b2017-09-29 13:59:38 +0800605int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino)
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900606{
Jaegeuk Kimb01a9202017-01-09 14:13:03 -0800607 struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
Chao Yuadf8d902014-05-08 17:00:35 +0800608 struct flush_cmd cmd;
Chao Yu8b8dd652017-03-25 17:19:58 +0800609 int ret;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900610
Jaegeuk Kim0f7b2ab2014-07-23 09:57:31 -0700611 if (test_opt(sbi, NOBARRIER))
612 return 0;
613
Chao Yu8b8dd652017-03-25 17:19:58 +0800614 if (!test_opt(sbi, FLUSH_MERGE)) {
Chao Yu39d787b2017-09-29 13:59:38 +0800615 ret = submit_flush_wait(sbi, ino);
Chao Yu8b8dd652017-03-25 17:19:58 +0800616 atomic_inc(&fcc->issued_flush);
617 return ret;
618 }
619
Chao Yu39d787b2017-09-29 13:59:38 +0800620 if (atomic_inc_return(&fcc->issing_flush) == 1 || sbi->s_ndevs > 1) {
621 ret = submit_flush_wait(sbi, ino);
Chao Yu8b8dd652017-03-25 17:19:58 +0800622 atomic_dec(&fcc->issing_flush);
623
624 atomic_inc(&fcc->issued_flush);
Jaegeuk Kim740432f2015-08-14 11:43:56 -0700625 return ret;
626 }
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900627
Chao Yu39d787b2017-09-29 13:59:38 +0800628 cmd.ino = ino;
Chao Yuadf8d902014-05-08 17:00:35 +0800629 init_completion(&cmd.wait);
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900630
Gu Zheng721bd4d2014-09-05 18:31:00 +0800631 llist_add(&cmd.llnode, &fcc->issue_list);
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900632
Chao Yu6f890df2017-08-21 22:53:45 +0800633 /* update issue_list before we wake up issue_flush thread */
634 smp_mb();
635
636 if (waitqueue_active(&fcc->flush_wait_queue))
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800637 wake_up(&fcc->flush_wait_queue);
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900638
Jaegeuk Kim5eba8c52016-12-07 16:23:32 -0800639 if (fcc->f2fs_issue_flush) {
640 wait_for_completion(&cmd.wait);
Chao Yu8b8dd652017-03-25 17:19:58 +0800641 atomic_dec(&fcc->issing_flush);
Jaegeuk Kim5eba8c52016-12-07 16:23:32 -0800642 } else {
Chao Yud3238692017-08-31 18:56:06 +0800643 struct llist_node *list;
644
645 list = llist_del_all(&fcc->issue_list);
646 if (!list) {
647 wait_for_completion(&cmd.wait);
648 atomic_dec(&fcc->issing_flush);
649 } else {
650 struct flush_cmd *tmp, *next;
651
Chao Yu39d787b2017-09-29 13:59:38 +0800652 ret = submit_flush_wait(sbi, ino);
Chao Yud3238692017-08-31 18:56:06 +0800653
654 llist_for_each_entry_safe(tmp, next, list, llnode) {
655 if (tmp == &cmd) {
656 cmd.ret = ret;
657 atomic_dec(&fcc->issing_flush);
658 continue;
659 }
660 tmp->ret = ret;
661 complete(&tmp->wait);
662 }
663 }
Jaegeuk Kim5eba8c52016-12-07 16:23:32 -0800664 }
Chao Yuadf8d902014-05-08 17:00:35 +0800665
666 return cmd.ret;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900667}
668
Chao Yu4d57b862018-05-30 00:20:41 +0800669int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi)
Gu Zheng2163d192014-04-27 14:21:33 +0800670{
671 dev_t dev = sbi->sb->s_bdev->bd_dev;
672 struct flush_cmd_control *fcc;
673 int err = 0;
674
Jaegeuk Kimb01a9202017-01-09 14:13:03 -0800675 if (SM_I(sbi)->fcc_info) {
676 fcc = SM_I(sbi)->fcc_info;
Yunlong Songd871cd02017-06-24 15:57:19 +0800677 if (fcc->f2fs_issue_flush)
678 return err;
Jaegeuk Kim5eba8c52016-12-07 16:23:32 -0800679 goto init_thread;
680 }
681
Chao Yuacbf0542017-11-30 19:28:17 +0800682 fcc = f2fs_kzalloc(sbi, sizeof(struct flush_cmd_control), GFP_KERNEL);
Gu Zheng2163d192014-04-27 14:21:33 +0800683 if (!fcc)
684 return -ENOMEM;
Chao Yu8b8dd652017-03-25 17:19:58 +0800685 atomic_set(&fcc->issued_flush, 0);
686 atomic_set(&fcc->issing_flush, 0);
Gu Zheng2163d192014-04-27 14:21:33 +0800687 init_waitqueue_head(&fcc->flush_wait_queue);
Gu Zheng721bd4d2014-09-05 18:31:00 +0800688 init_llist_head(&fcc->issue_list);
Jaegeuk Kimb01a9202017-01-09 14:13:03 -0800689 SM_I(sbi)->fcc_info = fcc;
Yunlei Hed4fdf8b2017-06-01 16:43:51 +0800690 if (!test_opt(sbi, FLUSH_MERGE))
691 return err;
692
Jaegeuk Kim5eba8c52016-12-07 16:23:32 -0800693init_thread:
Gu Zheng2163d192014-04-27 14:21:33 +0800694 fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi,
695 "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev));
696 if (IS_ERR(fcc->f2fs_issue_flush)) {
697 err = PTR_ERR(fcc->f2fs_issue_flush);
698 kfree(fcc);
Jaegeuk Kimb01a9202017-01-09 14:13:03 -0800699 SM_I(sbi)->fcc_info = NULL;
Gu Zheng2163d192014-04-27 14:21:33 +0800700 return err;
701 }
Gu Zheng2163d192014-04-27 14:21:33 +0800702
703 return err;
704}
705
Chao Yu4d57b862018-05-30 00:20:41 +0800706void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free)
Gu Zheng2163d192014-04-27 14:21:33 +0800707{
Jaegeuk Kimb01a9202017-01-09 14:13:03 -0800708 struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info;
Gu Zheng2163d192014-04-27 14:21:33 +0800709
Jaegeuk Kim5eba8c52016-12-07 16:23:32 -0800710 if (fcc && fcc->f2fs_issue_flush) {
711 struct task_struct *flush_thread = fcc->f2fs_issue_flush;
712
713 fcc->f2fs_issue_flush = NULL;
714 kthread_stop(flush_thread);
715 }
716 if (free) {
717 kfree(fcc);
Jaegeuk Kimb01a9202017-01-09 14:13:03 -0800718 SM_I(sbi)->fcc_info = NULL;
Jaegeuk Kim5eba8c52016-12-07 16:23:32 -0800719 }
Gu Zheng2163d192014-04-27 14:21:33 +0800720}
721
Chao Yu1228b482017-09-29 13:59:39 +0800722int f2fs_flush_device_cache(struct f2fs_sb_info *sbi)
723{
724 int ret = 0, i;
725
726 if (!sbi->s_ndevs)
727 return 0;
728
729 for (i = 1; i < sbi->s_ndevs; i++) {
730 if (!f2fs_test_bit(i, (char *)&sbi->dirty_device))
731 continue;
732 ret = __submit_flush_wait(sbi, FDEV(i).bdev);
733 if (ret)
734 break;
735
736 spin_lock(&sbi->dev_lock);
737 f2fs_clear_bit(i, (char *)&sbi->dirty_device);
738 spin_unlock(&sbi->dev_lock);
739 }
740
741 return ret;
742}
743
Jaegeuk Kim351df4b2012-11-02 17:09:16 +0900744static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,
745 enum dirty_type dirty_type)
746{
747 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
748
749 /* need not be added */
750 if (IS_CURSEG(sbi, segno))
751 return;
752
753 if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type]))
754 dirty_i->nr_dirty[dirty_type]++;
755
756 if (dirty_type == DIRTY) {
757 struct seg_entry *sentry = get_seg_entry(sbi, segno);
Changman Lee4625d6a2013-10-25 17:31:57 +0900758 enum dirty_type t = sentry->type;
Jaegeuk Kimb2f2c392013-04-01 13:52:09 +0900759
Jaegeuk Kimec325b52014-09-02 16:24:11 -0700760 if (unlikely(t >= DIRTY)) {
761 f2fs_bug_on(sbi, 1);
762 return;
763 }
Changman Lee4625d6a2013-10-25 17:31:57 +0900764 if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t]))
765 dirty_i->nr_dirty[t]++;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +0900766 }
767}
768
769static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,
770 enum dirty_type dirty_type)
771{
772 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
773
774 if (test_and_clear_bit(segno, dirty_i->dirty_segmap[dirty_type]))
775 dirty_i->nr_dirty[dirty_type]--;
776
777 if (dirty_type == DIRTY) {
Changman Lee4625d6a2013-10-25 17:31:57 +0900778 struct seg_entry *sentry = get_seg_entry(sbi, segno);
779 enum dirty_type t = sentry->type;
Jaegeuk Kimb2f2c392013-04-01 13:52:09 +0900780
Changman Lee4625d6a2013-10-25 17:31:57 +0900781 if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t]))
782 dirty_i->nr_dirty[t]--;
Jaegeuk Kimb2f2c392013-04-01 13:52:09 +0900783
Jaegeuk Kim302bd342017-04-07 14:33:22 -0700784 if (get_valid_blocks(sbi, segno, true) == 0)
Jaegeuk Kim4ddb1a42017-04-07 15:08:17 -0700785 clear_bit(GET_SEC_FROM_SEG(sbi, segno),
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +0900786 dirty_i->victim_secmap);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +0900787 }
788}
789
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +0900790/*
Jaegeuk Kim351df4b2012-11-02 17:09:16 +0900791 * Should not occur error such as -ENOMEM.
792 * Adding dirty entry into seglist is not critical operation.
793 * If a given segment is one of current working segments, it won't be added.
794 */
Haicheng Li8d8451a2013-06-13 16:59:28 +0800795static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +0900796{
797 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
798 unsigned short valid_blocks;
799
800 if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno))
801 return;
802
803 mutex_lock(&dirty_i->seglist_lock);
804
Jaegeuk Kim302bd342017-04-07 14:33:22 -0700805 valid_blocks = get_valid_blocks(sbi, segno, false);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +0900806
807 if (valid_blocks == 0) {
808 __locate_dirty_segment(sbi, segno, PRE);
809 __remove_dirty_segment(sbi, segno, DIRTY);
810 } else if (valid_blocks < sbi->blocks_per_seg) {
811 __locate_dirty_segment(sbi, segno, DIRTY);
812 } else {
813 /* Recovery routine with SSR needs this */
814 __remove_dirty_segment(sbi, segno, DIRTY);
815 }
816
817 mutex_unlock(&dirty_i->seglist_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +0900818}
819
Chao Yu004b6862017-04-14 23:24:55 +0800820static struct discard_cmd *__create_discard_cmd(struct f2fs_sb_info *sbi,
Jaegeuk Kimc81abe32017-03-07 18:02:02 -0800821 struct block_device *bdev, block_t lstart,
822 block_t start, block_t len)
Chao Yu275b66b2016-08-29 23:58:34 +0800823{
Jaegeuk Kim0b54fb82017-01-11 14:40:24 -0800824 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
Chao Yuba48a332017-04-15 14:09:37 +0800825 struct list_head *pend_list;
Jaegeuk Kimb01a9202017-01-09 14:13:03 -0800826 struct discard_cmd *dc;
Chao Yu275b66b2016-08-29 23:58:34 +0800827
Chao Yuba48a332017-04-15 14:09:37 +0800828 f2fs_bug_on(sbi, !len);
829
830 pend_list = &dcc->pend_list[plist_idx(len)];
831
Jaegeuk Kimb01a9202017-01-09 14:13:03 -0800832 dc = f2fs_kmem_cache_alloc(discard_cmd_slab, GFP_NOFS);
833 INIT_LIST_HEAD(&dc->list);
Jaegeuk Kimc81abe32017-03-07 18:02:02 -0800834 dc->bdev = bdev;
Jaegeuk Kimb01a9202017-01-09 14:13:03 -0800835 dc->lstart = lstart;
Jaegeuk Kimc81abe32017-03-07 18:02:02 -0800836 dc->start = start;
Jaegeuk Kimb01a9202017-01-09 14:13:03 -0800837 dc->len = len;
Chao Yuec9895a2017-04-26 17:39:54 +0800838 dc->ref = 0;
Jaegeuk Kim15469962017-01-09 20:32:07 -0800839 dc->state = D_PREP;
Jaegeuk Kimc81abe32017-03-07 18:02:02 -0800840 dc->error = 0;
Jaegeuk Kimb01a9202017-01-09 14:13:03 -0800841 init_completion(&dc->wait);
Chao Yu22d375d2017-04-05 18:19:48 +0800842 list_add_tail(&dc->list, pend_list);
Chao Yu5f323662017-03-25 17:19:59 +0800843 atomic_inc(&dcc->discard_cmd_cnt);
Chao Yud84d1cb2017-04-18 19:27:39 +0800844 dcc->undiscard_blks += len;
Chao Yu004b6862017-04-14 23:24:55 +0800845
846 return dc;
Jaegeuk Kim15469962017-01-09 20:32:07 -0800847}
848
Chao Yu004b6862017-04-14 23:24:55 +0800849static struct discard_cmd *__attach_discard_cmd(struct f2fs_sb_info *sbi,
850 struct block_device *bdev, block_t lstart,
851 block_t start, block_t len,
852 struct rb_node *parent, struct rb_node **p)
853{
854 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
855 struct discard_cmd *dc;
856
857 dc = __create_discard_cmd(sbi, bdev, lstart, start, len);
858
859 rb_link_node(&dc->rb_node, parent, p);
860 rb_insert_color(&dc->rb_node, &dcc->root);
861
862 return dc;
863}
864
865static void __detach_discard_cmd(struct discard_cmd_control *dcc,
866 struct discard_cmd *dc)
Jaegeuk Kim15469962017-01-09 20:32:07 -0800867{
Jaegeuk Kimdcc91652017-01-11 10:20:04 -0800868 if (dc->state == D_DONE)
Chao Yu004b6862017-04-14 23:24:55 +0800869 atomic_dec(&dcc->issing_discard);
870
871 list_del(&dc->list);
872 rb_erase(&dc->rb_node, &dcc->root);
Chao Yud84d1cb2017-04-18 19:27:39 +0800873 dcc->undiscard_blks -= dc->len;
Chao Yu004b6862017-04-14 23:24:55 +0800874
875 kmem_cache_free(discard_cmd_slab, dc);
876
877 atomic_dec(&dcc->discard_cmd_cnt);
878}
879
880static void __remove_discard_cmd(struct f2fs_sb_info *sbi,
881 struct discard_cmd *dc)
882{
883 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
Jaegeuk Kimdcc91652017-01-11 10:20:04 -0800884
Chao Yu2ec6f2e2017-10-04 09:08:36 +0800885 trace_f2fs_remove_discard(dc->bdev, dc->start, dc->len);
886
Chao Yud9703d92017-06-05 18:29:07 +0800887 f2fs_bug_on(sbi, dc->ref);
888
Jaegeuk Kimc81abe32017-03-07 18:02:02 -0800889 if (dc->error == -EOPNOTSUPP)
890 dc->error = 0;
Jaegeuk Kim15469962017-01-09 20:32:07 -0800891
Jaegeuk Kimc81abe32017-03-07 18:02:02 -0800892 if (dc->error)
Jaegeuk Kim15469962017-01-09 20:32:07 -0800893 f2fs_msg(sbi->sb, KERN_INFO,
Chao Yu04dfc232017-05-19 23:46:43 +0800894 "Issue discard(%u, %u, %u) failed, ret: %d",
895 dc->lstart, dc->start, dc->len, dc->error);
Chao Yu004b6862017-04-14 23:24:55 +0800896 __detach_discard_cmd(dcc, dc);
Chao Yu275b66b2016-08-29 23:58:34 +0800897}
898
Jaegeuk Kimc81abe32017-03-07 18:02:02 -0800899static void f2fs_submit_discard_endio(struct bio *bio)
900{
901 struct discard_cmd *dc = (struct discard_cmd *)bio->bi_private;
902
Christoph Hellwig4e4cbee2017-06-03 09:38:06 +0200903 dc->error = blk_status_to_errno(bio->bi_status);
Jaegeuk Kimc81abe32017-03-07 18:02:02 -0800904 dc->state = D_DONE;
Chao Yue31b9822017-05-19 23:46:44 +0800905 complete_all(&dc->wait);
Jaegeuk Kimc81abe32017-03-07 18:02:02 -0800906 bio_put(bio);
907}
908
Wei Yongjun94b1e102018-01-05 09:41:20 +0000909static void __check_sit_bitmap(struct f2fs_sb_info *sbi,
Chao Yu6915ea92017-06-30 17:19:02 +0800910 block_t start, block_t end)
911{
912#ifdef CONFIG_F2FS_CHECK_FS
913 struct seg_entry *sentry;
914 unsigned int segno;
915 block_t blk = start;
916 unsigned long offset, size, max_blocks = sbi->blocks_per_seg;
917 unsigned long *map;
918
919 while (blk < end) {
920 segno = GET_SEGNO(sbi, blk);
921 sentry = get_seg_entry(sbi, segno);
922 offset = GET_BLKOFF_FROM_SEG0(sbi, blk);
923
Yunlong Song008396e2017-08-04 17:07:15 +0800924 if (end < START_BLOCK(sbi, segno + 1))
925 size = GET_BLKOFF_FROM_SEG0(sbi, end);
926 else
927 size = max_blocks;
Chao Yu6915ea92017-06-30 17:19:02 +0800928 map = (unsigned long *)(sentry->cur_valid_map);
929 offset = __find_rev_next_bit(map, size, offset);
930 f2fs_bug_on(sbi, offset != size);
Yunlong Song008396e2017-08-04 17:07:15 +0800931 blk = START_BLOCK(sbi, segno + 1);
Chao Yu6915ea92017-06-30 17:19:02 +0800932 }
933#endif
934}
935
Jaegeuk Kim8bb4f252018-05-29 09:58:42 -0700936static void __init_discard_policy(struct f2fs_sb_info *sbi,
937 struct discard_policy *dpolicy,
938 int discard_type, unsigned int granularity)
939{
940 /* common policy */
941 dpolicy->type = discard_type;
942 dpolicy->sync = true;
Chao Yu20ee4382018-07-08 22:11:01 +0800943 dpolicy->ordered = false;
Jaegeuk Kim8bb4f252018-05-29 09:58:42 -0700944 dpolicy->granularity = granularity;
945
946 dpolicy->max_requests = DEF_MAX_DISCARD_REQUEST;
947 dpolicy->io_aware_gran = MAX_PLIST_NUM;
948
949 if (discard_type == DPOLICY_BG) {
950 dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME;
Yunlei Hef9d1dce2018-04-08 15:11:11 +0800951 dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME;
Jaegeuk Kim8bb4f252018-05-29 09:58:42 -0700952 dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME;
953 dpolicy->io_aware = true;
Chao Yucba60842018-04-10 15:43:09 +0800954 dpolicy->sync = false;
Chao Yu20ee4382018-07-08 22:11:01 +0800955 dpolicy->ordered = true;
Jaegeuk Kim8bb4f252018-05-29 09:58:42 -0700956 if (utilization(sbi) > DEF_DISCARD_URGENT_UTIL) {
957 dpolicy->granularity = 1;
958 dpolicy->max_interval = DEF_MIN_DISCARD_ISSUE_TIME;
959 }
960 } else if (discard_type == DPOLICY_FORCE) {
961 dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME;
Yunlei Hef9d1dce2018-04-08 15:11:11 +0800962 dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME;
Jaegeuk Kim8bb4f252018-05-29 09:58:42 -0700963 dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME;
964 dpolicy->io_aware = false;
965 } else if (discard_type == DPOLICY_FSTRIM) {
966 dpolicy->io_aware = false;
967 } else if (discard_type == DPOLICY_UMOUNT) {
Yunlei He241b4932018-04-04 17:29:05 +0800968 dpolicy->max_requests = UINT_MAX;
Jaegeuk Kim8bb4f252018-05-29 09:58:42 -0700969 dpolicy->io_aware = false;
970 }
971}
972
973
Jaegeuk Kimc81abe32017-03-07 18:02:02 -0800974/* this function is copied from blkdev_issue_discard from block/blk-lib.c */
975static void __submit_discard_cmd(struct f2fs_sb_info *sbi,
Chao Yu78997b52017-10-04 09:08:34 +0800976 struct discard_policy *dpolicy,
977 struct discard_cmd *dc)
Jaegeuk Kimc81abe32017-03-07 18:02:02 -0800978{
979 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
Chao Yu78997b52017-10-04 09:08:34 +0800980 struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ?
981 &(dcc->fstrim_list) : &(dcc->wait_list);
Jaegeuk Kimc81abe32017-03-07 18:02:02 -0800982 struct bio *bio = NULL;
Chao Yu78997b52017-10-04 09:08:34 +0800983 int flag = dpolicy->sync ? REQ_SYNC : 0;
Jaegeuk Kimc81abe32017-03-07 18:02:02 -0800984
985 if (dc->state != D_PREP)
986 return;
987
Yunlei Hed6184772018-04-13 11:08:05 +0800988 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
989 return;
990
Chao Yu0243a5f2017-04-15 14:09:38 +0800991 trace_f2fs_issue_discard(dc->bdev, dc->start, dc->len);
992
Jaegeuk Kimc81abe32017-03-07 18:02:02 -0800993 dc->error = __blkdev_issue_discard(dc->bdev,
994 SECTOR_FROM_BLOCK(dc->start),
995 SECTOR_FROM_BLOCK(dc->len),
996 GFP_NOFS, 0, &bio);
997 if (!dc->error) {
998 /* should keep before submission to avoid D_DONE right away */
999 dc->state = D_SUBMIT;
Chao Yu8b8dd652017-03-25 17:19:58 +08001000 atomic_inc(&dcc->issued_discard);
1001 atomic_inc(&dcc->issing_discard);
Jaegeuk Kimc81abe32017-03-07 18:02:02 -08001002 if (bio) {
1003 bio->bi_private = dc;
1004 bio->bi_end_io = f2fs_submit_discard_endio;
Chao Yuecc9aa02017-10-04 09:08:33 +08001005 bio->bi_opf |= flag;
Jaegeuk Kimc81abe32017-03-07 18:02:02 -08001006 submit_bio(bio);
Chao Yu84126632017-10-04 09:08:32 +08001007 list_move_tail(&dc->list, wait_list);
Chao Yu6915ea92017-06-30 17:19:02 +08001008 __check_sit_bitmap(sbi, dc->start, dc->start + dc->len);
Chao Yub0af6d42017-08-02 23:21:48 +08001009
1010 f2fs_update_iostat(sbi, FS_DISCARD, 1);
Jaegeuk Kimc81abe32017-03-07 18:02:02 -08001011 }
1012 } else {
1013 __remove_discard_cmd(sbi, dc);
1014 }
1015}
1016
Chao Yu004b6862017-04-14 23:24:55 +08001017static struct discard_cmd *__insert_discard_tree(struct f2fs_sb_info *sbi,
1018 struct block_device *bdev, block_t lstart,
1019 block_t start, block_t len,
1020 struct rb_node **insert_p,
1021 struct rb_node *insert_parent)
1022{
1023 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
Colin Ian Kingdca69512017-10-19 12:58:21 +02001024 struct rb_node **p;
Chao Yu004b6862017-04-14 23:24:55 +08001025 struct rb_node *parent = NULL;
1026 struct discard_cmd *dc = NULL;
1027
1028 if (insert_p && insert_parent) {
1029 parent = insert_parent;
1030 p = insert_p;
1031 goto do_insert;
1032 }
1033
Chao Yu4d57b862018-05-30 00:20:41 +08001034 p = f2fs_lookup_rb_tree_for_insert(sbi, &dcc->root, &parent, lstart);
Chao Yu004b6862017-04-14 23:24:55 +08001035do_insert:
1036 dc = __attach_discard_cmd(sbi, bdev, lstart, start, len, parent, p);
1037 if (!dc)
1038 return NULL;
1039
1040 return dc;
1041}
1042
Chao Yuba48a332017-04-15 14:09:37 +08001043static void __relocate_discard_cmd(struct discard_cmd_control *dcc,
1044 struct discard_cmd *dc)
1045{
1046 list_move_tail(&dc->list, &dcc->pend_list[plist_idx(dc->len)]);
1047}
1048
Chao Yu004b6862017-04-14 23:24:55 +08001049static void __punch_discard_cmd(struct f2fs_sb_info *sbi,
1050 struct discard_cmd *dc, block_t blkaddr)
1051{
Chao Yuba48a332017-04-15 14:09:37 +08001052 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
Chao Yu004b6862017-04-14 23:24:55 +08001053 struct discard_info di = dc->di;
1054 bool modified = false;
1055
1056 if (dc->state == D_DONE || dc->len == 1) {
1057 __remove_discard_cmd(sbi, dc);
1058 return;
1059 }
1060
Chao Yud84d1cb2017-04-18 19:27:39 +08001061 dcc->undiscard_blks -= di.len;
1062
Chao Yu004b6862017-04-14 23:24:55 +08001063 if (blkaddr > di.lstart) {
1064 dc->len = blkaddr - dc->lstart;
Chao Yud84d1cb2017-04-18 19:27:39 +08001065 dcc->undiscard_blks += dc->len;
Chao Yuba48a332017-04-15 14:09:37 +08001066 __relocate_discard_cmd(dcc, dc);
Chao Yu004b6862017-04-14 23:24:55 +08001067 modified = true;
1068 }
1069
1070 if (blkaddr < di.lstart + di.len - 1) {
1071 if (modified) {
1072 __insert_discard_tree(sbi, dc->bdev, blkaddr + 1,
1073 di.start + blkaddr + 1 - di.lstart,
1074 di.lstart + di.len - 1 - blkaddr,
1075 NULL, NULL);
1076 } else {
1077 dc->lstart++;
1078 dc->len--;
1079 dc->start++;
Chao Yud84d1cb2017-04-18 19:27:39 +08001080 dcc->undiscard_blks += dc->len;
Chao Yuba48a332017-04-15 14:09:37 +08001081 __relocate_discard_cmd(dcc, dc);
Chao Yu004b6862017-04-14 23:24:55 +08001082 }
1083 }
1084}
1085
1086static void __update_discard_tree_range(struct f2fs_sb_info *sbi,
1087 struct block_device *bdev, block_t lstart,
1088 block_t start, block_t len)
1089{
1090 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1091 struct discard_cmd *prev_dc = NULL, *next_dc = NULL;
1092 struct discard_cmd *dc;
1093 struct discard_info di = {0};
1094 struct rb_node **insert_p = NULL, *insert_parent = NULL;
1095 block_t end = lstart + len;
1096
1097 mutex_lock(&dcc->cmd_lock);
1098
Chao Yu4d57b862018-05-30 00:20:41 +08001099 dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,
Chao Yu004b6862017-04-14 23:24:55 +08001100 NULL, lstart,
1101 (struct rb_entry **)&prev_dc,
1102 (struct rb_entry **)&next_dc,
1103 &insert_p, &insert_parent, true);
1104 if (dc)
1105 prev_dc = dc;
1106
1107 if (!prev_dc) {
1108 di.lstart = lstart;
1109 di.len = next_dc ? next_dc->lstart - lstart : len;
1110 di.len = min(di.len, len);
1111 di.start = start;
1112 }
1113
1114 while (1) {
1115 struct rb_node *node;
1116 bool merged = false;
1117 struct discard_cmd *tdc = NULL;
1118
1119 if (prev_dc) {
1120 di.lstart = prev_dc->lstart + prev_dc->len;
1121 if (di.lstart < lstart)
1122 di.lstart = lstart;
1123 if (di.lstart >= end)
1124 break;
1125
1126 if (!next_dc || next_dc->lstart > end)
1127 di.len = end - di.lstart;
1128 else
1129 di.len = next_dc->lstart - di.lstart;
1130 di.start = start + di.lstart - lstart;
1131 }
1132
1133 if (!di.len)
1134 goto next;
1135
1136 if (prev_dc && prev_dc->state == D_PREP &&
1137 prev_dc->bdev == bdev &&
1138 __is_discard_back_mergeable(&di, &prev_dc->di)) {
1139 prev_dc->di.len += di.len;
Chao Yud84d1cb2017-04-18 19:27:39 +08001140 dcc->undiscard_blks += di.len;
Chao Yuba48a332017-04-15 14:09:37 +08001141 __relocate_discard_cmd(dcc, prev_dc);
Chao Yu004b6862017-04-14 23:24:55 +08001142 di = prev_dc->di;
1143 tdc = prev_dc;
1144 merged = true;
1145 }
1146
1147 if (next_dc && next_dc->state == D_PREP &&
1148 next_dc->bdev == bdev &&
1149 __is_discard_front_mergeable(&di, &next_dc->di)) {
1150 next_dc->di.lstart = di.lstart;
1151 next_dc->di.len += di.len;
1152 next_dc->di.start = di.start;
Chao Yud84d1cb2017-04-18 19:27:39 +08001153 dcc->undiscard_blks += di.len;
Chao Yuba48a332017-04-15 14:09:37 +08001154 __relocate_discard_cmd(dcc, next_dc);
Chao Yu004b6862017-04-14 23:24:55 +08001155 if (tdc)
1156 __remove_discard_cmd(sbi, tdc);
Chao Yu004b6862017-04-14 23:24:55 +08001157 merged = true;
1158 }
1159
Chao Yudf0f6b42017-04-17 18:21:43 +08001160 if (!merged) {
Chao Yu004b6862017-04-14 23:24:55 +08001161 __insert_discard_tree(sbi, bdev, di.lstart, di.start,
1162 di.len, NULL, NULL);
Chao Yudf0f6b42017-04-17 18:21:43 +08001163 }
Chao Yu004b6862017-04-14 23:24:55 +08001164 next:
1165 prev_dc = next_dc;
1166 if (!prev_dc)
1167 break;
1168
1169 node = rb_next(&prev_dc->rb_node);
1170 next_dc = rb_entry_safe(node, struct discard_cmd, rb_node);
1171 }
1172
1173 mutex_unlock(&dcc->cmd_lock);
1174}
1175
Jaegeuk Kimc81abe32017-03-07 18:02:02 -08001176static int __queue_discard_cmd(struct f2fs_sb_info *sbi,
1177 struct block_device *bdev, block_t blkstart, block_t blklen)
1178{
1179 block_t lblkstart = blkstart;
1180
Chao Yu0243a5f2017-04-15 14:09:38 +08001181 trace_f2fs_queue_discard(bdev, blkstart, blklen);
Jaegeuk Kimc81abe32017-03-07 18:02:02 -08001182
1183 if (sbi->s_ndevs) {
1184 int devi = f2fs_target_device_index(sbi, blkstart);
1185
1186 blkstart -= FDEV(devi).start_blk;
1187 }
Chao Yu004b6862017-04-14 23:24:55 +08001188 __update_discard_tree_range(sbi, bdev, lblkstart, blkstart, blklen);
Jaegeuk Kimc81abe32017-03-07 18:02:02 -08001189 return 0;
1190}
1191
Chao Yu20ee4382018-07-08 22:11:01 +08001192static unsigned int __issue_discard_cmd_orderly(struct f2fs_sb_info *sbi,
1193 struct discard_policy *dpolicy)
1194{
1195 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1196 struct discard_cmd *prev_dc = NULL, *next_dc = NULL;
1197 struct rb_node **insert_p = NULL, *insert_parent = NULL;
1198 struct discard_cmd *dc;
1199 struct blk_plug plug;
1200 unsigned int pos = dcc->next_pos;
1201 unsigned int issued = 0;
1202 bool io_interrupted = false;
1203
1204 mutex_lock(&dcc->cmd_lock);
1205 dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,
1206 NULL, pos,
1207 (struct rb_entry **)&prev_dc,
1208 (struct rb_entry **)&next_dc,
1209 &insert_p, &insert_parent, true);
1210 if (!dc)
1211 dc = next_dc;
1212
1213 blk_start_plug(&plug);
1214
1215 while (dc) {
1216 struct rb_node *node;
1217
1218 if (dc->state != D_PREP)
1219 goto next;
1220
1221 if (dpolicy->io_aware && !is_idle(sbi)) {
1222 io_interrupted = true;
1223 break;
1224 }
1225
1226 dcc->next_pos = dc->lstart + dc->len;
1227 __submit_discard_cmd(sbi, dpolicy, dc);
1228
1229 if (++issued >= dpolicy->max_requests)
1230 break;
1231next:
1232 node = rb_next(&dc->rb_node);
1233 dc = rb_entry_safe(node, struct discard_cmd, rb_node);
1234 }
1235
1236 blk_finish_plug(&plug);
1237
1238 if (!dc)
1239 dcc->next_pos = 0;
1240
1241 mutex_unlock(&dcc->cmd_lock);
1242
1243 if (!issued && io_interrupted)
1244 issued = -1;
1245
1246 return issued;
1247}
1248
Chao Yu78997b52017-10-04 09:08:34 +08001249static int __issue_discard_cmd(struct f2fs_sb_info *sbi,
1250 struct discard_policy *dpolicy)
Chao Yubd5b0732017-04-25 20:21:37 +08001251{
1252 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1253 struct list_head *pend_list;
1254 struct discard_cmd *dc, *tmp;
1255 struct blk_plug plug;
Chao Yu522d1712018-07-08 22:08:09 +08001256 int i, issued = 0;
Chao Yue6c6de12017-09-12 21:35:12 +08001257 bool io_interrupted = false;
Chao Yubd5b0732017-04-25 20:21:37 +08001258
Chao Yu78997b52017-10-04 09:08:34 +08001259 for (i = MAX_PLIST_NUM - 1; i >= 0; i--) {
1260 if (i + 1 < dpolicy->granularity)
1261 break;
Chao Yu20ee4382018-07-08 22:11:01 +08001262
1263 if (i < DEFAULT_DISCARD_GRANULARITY && dpolicy->ordered)
1264 return __issue_discard_cmd_orderly(sbi, dpolicy);
1265
Chao Yubd5b0732017-04-25 20:21:37 +08001266 pend_list = &dcc->pend_list[i];
Chao Yu33da62c2017-10-04 09:08:35 +08001267
1268 mutex_lock(&dcc->cmd_lock);
Chao Yu49c60c62018-01-08 18:48:33 +08001269 if (list_empty(pend_list))
1270 goto next;
Chao Yu67fce702018-06-22 16:06:59 +08001271 if (unlikely(dcc->rbtree_check))
1272 f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi,
1273 &dcc->root));
Chao Yu33da62c2017-10-04 09:08:35 +08001274 blk_start_plug(&plug);
Chao Yubd5b0732017-04-25 20:21:37 +08001275 list_for_each_entry_safe(dc, tmp, pend_list, list) {
1276 f2fs_bug_on(sbi, dc->state != D_PREP);
1277
Chao Yuecc9aa02017-10-04 09:08:33 +08001278 if (dpolicy->io_aware && i < dpolicy->io_aware_gran &&
1279 !is_idle(sbi)) {
Chao Yue6c6de12017-09-12 21:35:12 +08001280 io_interrupted = true;
Chao Yu522d1712018-07-08 22:08:09 +08001281 break;
Chao Yue6c6de12017-09-12 21:35:12 +08001282 }
1283
Chao Yu78997b52017-10-04 09:08:34 +08001284 __submit_discard_cmd(sbi, dpolicy, dc);
Chao Yu522d1712018-07-08 22:08:09 +08001285
1286 if (++issued >= dpolicy->max_requests)
Chao Yu33da62c2017-10-04 09:08:35 +08001287 break;
Chao Yubd5b0732017-04-25 20:21:37 +08001288 }
Chao Yu33da62c2017-10-04 09:08:35 +08001289 blk_finish_plug(&plug);
Chao Yu49c60c62018-01-08 18:48:33 +08001290next:
Chao Yu33da62c2017-10-04 09:08:35 +08001291 mutex_unlock(&dcc->cmd_lock);
1292
Chao Yu522d1712018-07-08 22:08:09 +08001293 if (issued >= dpolicy->max_requests || io_interrupted)
Chao Yu33da62c2017-10-04 09:08:35 +08001294 break;
Chao Yubd5b0732017-04-25 20:21:37 +08001295 }
Chao Yu969d1b12017-08-07 23:09:56 +08001296
Chao Yue6c6de12017-09-12 21:35:12 +08001297 if (!issued && io_interrupted)
1298 issued = -1;
1299
Chao Yu969d1b12017-08-07 23:09:56 +08001300 return issued;
1301}
1302
Chao Yucf5c7592017-10-04 09:08:37 +08001303static bool __drop_discard_cmd(struct f2fs_sb_info *sbi)
Chao Yu969d1b12017-08-07 23:09:56 +08001304{
1305 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1306 struct list_head *pend_list;
1307 struct discard_cmd *dc, *tmp;
1308 int i;
Chao Yucf5c7592017-10-04 09:08:37 +08001309 bool dropped = false;
Chao Yu969d1b12017-08-07 23:09:56 +08001310
1311 mutex_lock(&dcc->cmd_lock);
1312 for (i = MAX_PLIST_NUM - 1; i >= 0; i--) {
1313 pend_list = &dcc->pend_list[i];
1314 list_for_each_entry_safe(dc, tmp, pend_list, list) {
1315 f2fs_bug_on(sbi, dc->state != D_PREP);
1316 __remove_discard_cmd(sbi, dc);
Chao Yucf5c7592017-10-04 09:08:37 +08001317 dropped = true;
Chao Yu969d1b12017-08-07 23:09:56 +08001318 }
1319 }
1320 mutex_unlock(&dcc->cmd_lock);
Chao Yucf5c7592017-10-04 09:08:37 +08001321
1322 return dropped;
Chao Yubd5b0732017-04-25 20:21:37 +08001323}
1324
Chao Yu4d57b862018-05-30 00:20:41 +08001325void f2fs_drop_discard_cmd(struct f2fs_sb_info *sbi)
Chao Yu7950e9a2018-01-18 17:23:29 +08001326{
1327 __drop_discard_cmd(sbi);
1328}
1329
Chao Yu0ea80512017-10-28 16:52:32 +08001330static unsigned int __wait_one_discard_bio(struct f2fs_sb_info *sbi,
Chao Yu2a510c002017-06-05 18:29:06 +08001331 struct discard_cmd *dc)
1332{
1333 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
Chao Yu0ea80512017-10-28 16:52:32 +08001334 unsigned int len = 0;
Chao Yu2a510c002017-06-05 18:29:06 +08001335
1336 wait_for_completion_io(&dc->wait);
1337 mutex_lock(&dcc->cmd_lock);
1338 f2fs_bug_on(sbi, dc->state != D_DONE);
1339 dc->ref--;
Chao Yu0ea80512017-10-28 16:52:32 +08001340 if (!dc->ref) {
1341 if (!dc->error)
1342 len = dc->len;
Chao Yu2a510c002017-06-05 18:29:06 +08001343 __remove_discard_cmd(sbi, dc);
Chao Yu0ea80512017-10-28 16:52:32 +08001344 }
Chao Yu2a510c002017-06-05 18:29:06 +08001345 mutex_unlock(&dcc->cmd_lock);
Chao Yu0ea80512017-10-28 16:52:32 +08001346
1347 return len;
Chao Yu2a510c002017-06-05 18:29:06 +08001348}
1349
Chao Yu0ea80512017-10-28 16:52:32 +08001350static unsigned int __wait_discard_cmd_range(struct f2fs_sb_info *sbi,
Chao Yu78997b52017-10-04 09:08:34 +08001351 struct discard_policy *dpolicy,
1352 block_t start, block_t end)
Chao Yu63a94fa2017-04-25 20:21:38 +08001353{
1354 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
Chao Yu78997b52017-10-04 09:08:34 +08001355 struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ?
1356 &(dcc->fstrim_list) : &(dcc->wait_list);
Chao Yu63a94fa2017-04-25 20:21:38 +08001357 struct discard_cmd *dc, *tmp;
Chao Yu6afae632017-05-19 23:46:45 +08001358 bool need_wait;
Chao Yu0ea80512017-10-28 16:52:32 +08001359 unsigned int trimmed = 0;
Chao Yu6afae632017-05-19 23:46:45 +08001360
1361next:
1362 need_wait = false;
Chao Yu63a94fa2017-04-25 20:21:38 +08001363
1364 mutex_lock(&dcc->cmd_lock);
1365 list_for_each_entry_safe(dc, tmp, wait_list, list) {
Chao Yu84126632017-10-04 09:08:32 +08001366 if (dc->lstart + dc->len <= start || end <= dc->lstart)
1367 continue;
Chao Yu78997b52017-10-04 09:08:34 +08001368 if (dc->len < dpolicy->granularity)
Chao Yu84126632017-10-04 09:08:32 +08001369 continue;
Chao Yu78997b52017-10-04 09:08:34 +08001370 if (dc->state == D_DONE && !dc->ref) {
Chao Yu63a94fa2017-04-25 20:21:38 +08001371 wait_for_completion_io(&dc->wait);
Chao Yu0ea80512017-10-28 16:52:32 +08001372 if (!dc->error)
1373 trimmed += dc->len;
Chao Yu63a94fa2017-04-25 20:21:38 +08001374 __remove_discard_cmd(sbi, dc);
Chao Yu6afae632017-05-19 23:46:45 +08001375 } else {
1376 dc->ref++;
1377 need_wait = true;
1378 break;
Chao Yu63a94fa2017-04-25 20:21:38 +08001379 }
1380 }
1381 mutex_unlock(&dcc->cmd_lock);
Chao Yu6afae632017-05-19 23:46:45 +08001382
1383 if (need_wait) {
Chao Yu0ea80512017-10-28 16:52:32 +08001384 trimmed += __wait_one_discard_bio(sbi, dc);
Chao Yu6afae632017-05-19 23:46:45 +08001385 goto next;
1386 }
Chao Yu0ea80512017-10-28 16:52:32 +08001387
1388 return trimmed;
Chao Yu63a94fa2017-04-25 20:21:38 +08001389}
1390
Chao Yu01f9cf62018-06-25 20:33:24 +08001391static unsigned int __wait_all_discard_cmd(struct f2fs_sb_info *sbi,
Chao Yu78997b52017-10-04 09:08:34 +08001392 struct discard_policy *dpolicy)
Chao Yu84126632017-10-04 09:08:32 +08001393{
Jaegeuk Kim9a997182018-05-24 13:57:26 -07001394 struct discard_policy dp;
Chao Yu01f9cf62018-06-25 20:33:24 +08001395 unsigned int discard_blks;
Jaegeuk Kim9a997182018-05-24 13:57:26 -07001396
Chao Yu01f9cf62018-06-25 20:33:24 +08001397 if (dpolicy)
1398 return __wait_discard_cmd_range(sbi, dpolicy, 0, UINT_MAX);
Jaegeuk Kim9a997182018-05-24 13:57:26 -07001399
1400 /* wait all */
Jaegeuk Kim8bb4f252018-05-29 09:58:42 -07001401 __init_discard_policy(sbi, &dp, DPOLICY_FSTRIM, 1);
Chao Yu01f9cf62018-06-25 20:33:24 +08001402 discard_blks = __wait_discard_cmd_range(sbi, &dp, 0, UINT_MAX);
Jaegeuk Kim8bb4f252018-05-29 09:58:42 -07001403 __init_discard_policy(sbi, &dp, DPOLICY_UMOUNT, 1);
Chao Yu01f9cf62018-06-25 20:33:24 +08001404 discard_blks += __wait_discard_cmd_range(sbi, &dp, 0, UINT_MAX);
1405
1406 return discard_blks;
Chao Yu84126632017-10-04 09:08:32 +08001407}
1408
Jaegeuk Kim4e6a8d92016-12-29 14:07:53 -08001409/* This should be covered by global mutex, &sit_i->sentry_lock */
Wei Yongjun94b1e102018-01-05 09:41:20 +00001410static void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr)
Chao Yu275b66b2016-08-29 23:58:34 +08001411{
Jaegeuk Kim0b54fb82017-01-11 14:40:24 -08001412 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
Chao Yu004b6862017-04-14 23:24:55 +08001413 struct discard_cmd *dc;
Chao Yuec9895a2017-04-26 17:39:54 +08001414 bool need_wait = false;
Chao Yu275b66b2016-08-29 23:58:34 +08001415
Jaegeuk Kim15469962017-01-09 20:32:07 -08001416 mutex_lock(&dcc->cmd_lock);
Chao Yu4d57b862018-05-30 00:20:41 +08001417 dc = (struct discard_cmd *)f2fs_lookup_rb_tree(&dcc->root,
1418 NULL, blkaddr);
Chao Yu004b6862017-04-14 23:24:55 +08001419 if (dc) {
Chao Yuec9895a2017-04-26 17:39:54 +08001420 if (dc->state == D_PREP) {
1421 __punch_discard_cmd(sbi, dc, blkaddr);
1422 } else {
1423 dc->ref++;
1424 need_wait = true;
1425 }
Chao Yu275b66b2016-08-29 23:58:34 +08001426 }
Chao Yud4314132017-04-05 18:19:49 +08001427 mutex_unlock(&dcc->cmd_lock);
Chao Yuec9895a2017-04-26 17:39:54 +08001428
Chao Yu2a510c002017-06-05 18:29:06 +08001429 if (need_wait)
1430 __wait_one_discard_bio(sbi, dc);
Chao Yud4314132017-04-05 18:19:49 +08001431}
Chao Yu22d375d2017-04-05 18:19:48 +08001432
Chao Yu4d57b862018-05-30 00:20:41 +08001433void f2fs_stop_discard_thread(struct f2fs_sb_info *sbi)
Chao Yucce13252017-06-29 23:17:45 +08001434{
1435 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1436
1437 if (dcc && dcc->f2fs_issue_discard) {
1438 struct task_struct *discard_thread = dcc->f2fs_issue_discard;
1439
1440 dcc->f2fs_issue_discard = NULL;
1441 kthread_stop(discard_thread);
Jaegeuk Kim15469962017-01-09 20:32:07 -08001442 }
1443}
1444
Chao Yu84126632017-10-04 09:08:32 +08001445/* This comes from f2fs_put_super */
Chao Yucf5c7592017-10-04 09:08:37 +08001446bool f2fs_wait_discard_bios(struct f2fs_sb_info *sbi)
Chao Yu275b66b2016-08-29 23:58:34 +08001447{
Chao Yu969d1b12017-08-07 23:09:56 +08001448 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
Chao Yu78997b52017-10-04 09:08:34 +08001449 struct discard_policy dpolicy;
Chao Yucf5c7592017-10-04 09:08:37 +08001450 bool dropped;
Chao Yu969d1b12017-08-07 23:09:56 +08001451
Jaegeuk Kim8bb4f252018-05-29 09:58:42 -07001452 __init_discard_policy(sbi, &dpolicy, DPOLICY_UMOUNT,
1453 dcc->discard_granularity);
Chao Yu78997b52017-10-04 09:08:34 +08001454 __issue_discard_cmd(sbi, &dpolicy);
Chao Yucf5c7592017-10-04 09:08:37 +08001455 dropped = __drop_discard_cmd(sbi);
Chao Yucf5c7592017-10-04 09:08:37 +08001456
Jaegeuk Kim9a997182018-05-24 13:57:26 -07001457 /* just to make sure there is no pending discard commands */
1458 __wait_all_discard_cmd(sbi, NULL);
Chao Yu2482c432018-07-08 22:16:53 +08001459
1460 f2fs_bug_on(sbi, atomic_read(&dcc->discard_cmd_cnt));
Chao Yucf5c7592017-10-04 09:08:37 +08001461 return dropped;
Chao Yu969d1b12017-08-07 23:09:56 +08001462}
1463
Jaegeuk Kim15469962017-01-09 20:32:07 -08001464static int issue_discard_thread(void *data)
1465{
1466 struct f2fs_sb_info *sbi = data;
1467 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1468 wait_queue_head_t *q = &dcc->discard_wait_queue;
Chao Yu78997b52017-10-04 09:08:34 +08001469 struct discard_policy dpolicy;
Chao Yu969d1b12017-08-07 23:09:56 +08001470 unsigned int wait_ms = DEF_MIN_DISCARD_ISSUE_TIME;
1471 int issued;
Jaegeuk Kim15469962017-01-09 20:32:07 -08001472
Jaegeuk Kim1d7be272017-05-17 10:36:58 -07001473 set_freezable();
Jaegeuk Kim15469962017-01-09 20:32:07 -08001474
Jaegeuk Kim1d7be272017-05-17 10:36:58 -07001475 do {
Jaegeuk Kim8bb4f252018-05-29 09:58:42 -07001476 __init_discard_policy(sbi, &dpolicy, DPOLICY_BG,
Chao Yu78997b52017-10-04 09:08:34 +08001477 dcc->discard_granularity);
1478
Chao Yu969d1b12017-08-07 23:09:56 +08001479 wait_event_interruptible_timeout(*q,
1480 kthread_should_stop() || freezing(current) ||
1481 dcc->discard_wake,
1482 msecs_to_jiffies(wait_ms));
Sheng Yong35a9a762018-05-08 17:51:34 +08001483
1484 if (dcc->discard_wake)
1485 dcc->discard_wake = 0;
1486
Jaegeuk Kim1d7be272017-05-17 10:36:58 -07001487 if (try_to_freeze())
1488 continue;
Chao Yu3b60d802018-01-25 18:57:27 +08001489 if (f2fs_readonly(sbi->sb))
1490 continue;
Jaegeuk Kim1d7be272017-05-17 10:36:58 -07001491 if (kthread_should_stop())
1492 return 0;
Yunlei Hed6184772018-04-13 11:08:05 +08001493 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) {
1494 wait_ms = dpolicy.max_interval;
1495 continue;
1496 }
Jaegeuk Kim15469962017-01-09 20:32:07 -08001497
Jaegeuk Kim5b0e9532018-05-07 14:22:40 -07001498 if (sbi->gc_mode == GC_URGENT)
Jaegeuk Kim8bb4f252018-05-29 09:58:42 -07001499 __init_discard_policy(sbi, &dpolicy, DPOLICY_FORCE, 1);
Jaegeuk Kim1d7be272017-05-17 10:36:58 -07001500
Chao Yudc6febb2017-07-22 08:52:23 +08001501 sb_start_intwrite(sbi->sb);
1502
Chao Yu78997b52017-10-04 09:08:34 +08001503 issued = __issue_discard_cmd(sbi, &dpolicy);
Yunlei Hef9d1dce2018-04-08 15:11:11 +08001504 if (issued > 0) {
Chao Yu78997b52017-10-04 09:08:34 +08001505 __wait_all_discard_cmd(sbi, &dpolicy);
1506 wait_ms = dpolicy.min_interval;
Yunlei Hef9d1dce2018-04-08 15:11:11 +08001507 } else if (issued == -1){
1508 wait_ms = dpolicy.mid_interval;
Chao Yu969d1b12017-08-07 23:09:56 +08001509 } else {
Chao Yu78997b52017-10-04 09:08:34 +08001510 wait_ms = dpolicy.max_interval;
Chao Yu969d1b12017-08-07 23:09:56 +08001511 }
Jaegeuk Kim1d7be272017-05-17 10:36:58 -07001512
Chao Yudc6febb2017-07-22 08:52:23 +08001513 sb_end_intwrite(sbi->sb);
1514
Jaegeuk Kim1d7be272017-05-17 10:36:58 -07001515 } while (!kthread_should_stop());
1516 return 0;
Jaegeuk Kim15469962017-01-09 20:32:07 -08001517}
1518
Damien Le Moalf46e88092016-10-28 17:45:06 +09001519#ifdef CONFIG_BLK_DEV_ZONED
Jaegeuk Kim3c62be12016-10-06 19:02:05 -07001520static int __f2fs_issue_discard_zone(struct f2fs_sb_info *sbi,
1521 struct block_device *bdev, block_t blkstart, block_t blklen)
Damien Le Moalf46e88092016-10-28 17:45:06 +09001522{
Jaegeuk Kim925922852017-02-22 20:18:35 -08001523 sector_t sector, nr_sects;
Kinglong Mee10a875f2017-03-08 09:49:53 +08001524 block_t lblkstart = blkstart;
Jaegeuk Kim3c62be12016-10-06 19:02:05 -07001525 int devi = 0;
Damien Le Moalf46e88092016-10-28 17:45:06 +09001526
Jaegeuk Kim3c62be12016-10-06 19:02:05 -07001527 if (sbi->s_ndevs) {
1528 devi = f2fs_target_device_index(sbi, blkstart);
1529 blkstart -= FDEV(devi).start_blk;
1530 }
Damien Le Moalf46e88092016-10-28 17:45:06 +09001531
1532 /*
1533 * We need to know the type of the zone: for conventional zones,
1534 * use regular discard if the drive supports it. For sequential
1535 * zones, reset the zone write pointer.
1536 */
Jaegeuk Kim3c62be12016-10-06 19:02:05 -07001537 switch (get_blkz_type(sbi, bdev, blkstart)) {
Damien Le Moalf46e88092016-10-28 17:45:06 +09001538
1539 case BLK_ZONE_TYPE_CONVENTIONAL:
1540 if (!blk_queue_discard(bdev_get_queue(bdev)))
1541 return 0;
Jaegeuk Kimc81abe32017-03-07 18:02:02 -08001542 return __queue_discard_cmd(sbi, bdev, lblkstart, blklen);
Damien Le Moalf46e88092016-10-28 17:45:06 +09001543 case BLK_ZONE_TYPE_SEQWRITE_REQ:
1544 case BLK_ZONE_TYPE_SEQWRITE_PREF:
Jaegeuk Kim925922852017-02-22 20:18:35 -08001545 sector = SECTOR_FROM_BLOCK(blkstart);
1546 nr_sects = SECTOR_FROM_BLOCK(blklen);
1547
1548 if (sector & (bdev_zone_sectors(bdev) - 1) ||
1549 nr_sects != bdev_zone_sectors(bdev)) {
1550 f2fs_msg(sbi->sb, KERN_INFO,
1551 "(%d) %s: Unaligned discard attempted (block %x + %x)",
1552 devi, sbi->s_ndevs ? FDEV(devi).path: "",
1553 blkstart, blklen);
1554 return -EIO;
1555 }
Jaegeuk Kimd50aaee2017-02-15 11:14:06 -08001556 trace_f2fs_issue_reset_zone(bdev, blkstart);
Damien Le Moalf46e88092016-10-28 17:45:06 +09001557 return blkdev_reset_zones(bdev, sector,
1558 nr_sects, GFP_NOFS);
1559 default:
1560 /* Unknown zone type: broken device ? */
1561 return -EIO;
1562 }
1563}
1564#endif
1565
Jaegeuk Kim3c62be12016-10-06 19:02:05 -07001566static int __issue_discard_async(struct f2fs_sb_info *sbi,
1567 struct block_device *bdev, block_t blkstart, block_t blklen)
1568{
1569#ifdef CONFIG_BLK_DEV_ZONED
Sheng Yongccd31cb2018-02-06 12:31:17 +08001570 if (f2fs_sb_has_blkzoned(sbi->sb) &&
Jaegeuk Kim3c62be12016-10-06 19:02:05 -07001571 bdev_zoned_model(bdev) != BLK_ZONED_NONE)
1572 return __f2fs_issue_discard_zone(sbi, bdev, blkstart, blklen);
1573#endif
Jaegeuk Kimc81abe32017-03-07 18:02:02 -08001574 return __queue_discard_cmd(sbi, bdev, blkstart, blklen);
Jaegeuk Kim3c62be12016-10-06 19:02:05 -07001575}
1576
Jaegeuk Kim1e87a782014-04-15 13:57:55 +09001577static int f2fs_issue_discard(struct f2fs_sb_info *sbi,
Jaegeuk Kim37208872013-11-12 16:55:17 +09001578 block_t blkstart, block_t blklen)
1579{
Jaegeuk Kim3c62be12016-10-06 19:02:05 -07001580 sector_t start = blkstart, len = 0;
1581 struct block_device *bdev;
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001582 struct seg_entry *se;
1583 unsigned int offset;
1584 block_t i;
Jaegeuk Kim3c62be12016-10-06 19:02:05 -07001585 int err = 0;
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001586
Jaegeuk Kim3c62be12016-10-06 19:02:05 -07001587 bdev = f2fs_target_device(sbi, blkstart, NULL);
1588
1589 for (i = blkstart; i < blkstart + blklen; i++, len++) {
1590 if (i != start) {
1591 struct block_device *bdev2 =
1592 f2fs_target_device(sbi, i, NULL);
1593
1594 if (bdev2 != bdev) {
1595 err = __issue_discard_async(sbi, bdev,
1596 start, len);
1597 if (err)
1598 return err;
1599 bdev = bdev2;
1600 start = i;
1601 len = 0;
1602 }
1603 }
1604
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001605 se = get_seg_entry(sbi, GET_SEGNO(sbi, i));
1606 offset = GET_BLKOFF_FROM_SEG0(sbi, i);
1607
1608 if (!f2fs_test_and_set_bit(offset, se->discard_map))
1609 sbi->discard_blks--;
1610 }
Damien Le Moalf46e88092016-10-28 17:45:06 +09001611
Jaegeuk Kim3c62be12016-10-06 19:02:05 -07001612 if (len)
1613 err = __issue_discard_async(sbi, bdev, start, len);
1614 return err;
Jaegeuk Kim1e87a782014-04-15 13:57:55 +09001615}
1616
Jaegeuk Kim25290fa2016-12-29 22:06:15 -08001617static bool add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc,
1618 bool check_only)
Jaegeuk Kimadf49832014-10-28 22:27:59 -07001619{
Jaegeuk Kimb2955552013-11-12 14:49:56 +09001620 int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long);
1621 int max_blocks = sbi->blocks_per_seg;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001622 struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start);
Jaegeuk Kimb2955552013-11-12 14:49:56 +09001623 unsigned long *cur_map = (unsigned long *)se->cur_valid_map;
1624 unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map;
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001625 unsigned long *discard_map = (unsigned long *)se->discard_map;
Jaegeuk Kim60a3b782015-02-10 16:44:29 -08001626 unsigned long *dmap = SIT_I(sbi)->tmp_map;
Jaegeuk Kimb2955552013-11-12 14:49:56 +09001627 unsigned int start = 0, end = -1;
Chao Yuc473f1a2017-04-27 20:40:39 +08001628 bool force = (cpc->reason & CP_DISCARD);
Chao Yua7eeb8232017-03-28 18:18:50 +08001629 struct discard_entry *de = NULL;
Chao Yu46f84c22017-04-15 14:09:36 +08001630 struct list_head *head = &SM_I(sbi)->dcc_info->entry_list;
Jaegeuk Kimb2955552013-11-12 14:49:56 +09001631 int i;
1632
Jaegeuk Kim3e025742016-08-02 10:56:40 -07001633 if (se->valid_blocks == max_blocks || !f2fs_discard_en(sbi))
Jaegeuk Kim25290fa2016-12-29 22:06:15 -08001634 return false;
Jaegeuk Kimb2955552013-11-12 14:49:56 +09001635
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001636 if (!force) {
1637 if (!test_opt(sbi, DISCARD) || !se->valid_blocks ||
Jaegeuk Kim0b54fb82017-01-11 14:40:24 -08001638 SM_I(sbi)->dcc_info->nr_discards >=
1639 SM_I(sbi)->dcc_info->max_discards)
Jaegeuk Kim25290fa2016-12-29 22:06:15 -08001640 return false;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001641 }
1642
Jaegeuk Kimb2955552013-11-12 14:49:56 +09001643 /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */
1644 for (i = 0; i < entries; i++)
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001645 dmap[i] = force ? ~ckpt_map[i] & ~discard_map[i] :
Jaegeuk Kimd7bc2482014-12-12 13:53:41 -08001646 (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i];
Jaegeuk Kimb2955552013-11-12 14:49:56 +09001647
Jaegeuk Kim0b54fb82017-01-11 14:40:24 -08001648 while (force || SM_I(sbi)->dcc_info->nr_discards <=
1649 SM_I(sbi)->dcc_info->max_discards) {
Jaegeuk Kimb2955552013-11-12 14:49:56 +09001650 start = __find_rev_next_bit(dmap, max_blocks, end + 1);
1651 if (start >= max_blocks)
1652 break;
1653
1654 end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1);
Yunlei Hec7b41e12016-07-07 12:13:33 +08001655 if (force && start && end != max_blocks
1656 && (end - start) < cpc->trim_minlen)
1657 continue;
1658
Jaegeuk Kim25290fa2016-12-29 22:06:15 -08001659 if (check_only)
1660 return true;
1661
Chao Yua7eeb8232017-03-28 18:18:50 +08001662 if (!de) {
1663 de = f2fs_kmem_cache_alloc(discard_entry_slab,
1664 GFP_F2FS_ZERO);
1665 de->start_blkaddr = START_BLOCK(sbi, cpc->trim_start);
1666 list_add_tail(&de->list, head);
1667 }
1668
1669 for (i = start; i < end; i++)
1670 __set_bit_le(i, (void *)de->discard_map);
1671
1672 SM_I(sbi)->dcc_info->nr_discards += end - start;
Jaegeuk Kimb2955552013-11-12 14:49:56 +09001673 }
Jaegeuk Kim25290fa2016-12-29 22:06:15 -08001674 return false;
Jaegeuk Kimb2955552013-11-12 14:49:56 +09001675}
1676
Chao Yuaf8ff652018-04-25 17:38:29 +08001677static void release_discard_addr(struct discard_entry *entry)
1678{
1679 list_del(&entry->list);
1680 kmem_cache_free(discard_entry_slab, entry);
1681}
1682
Chao Yu4d57b862018-05-30 00:20:41 +08001683void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi)
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001684{
Chao Yu46f84c22017-04-15 14:09:36 +08001685 struct list_head *head = &(SM_I(sbi)->dcc_info->entry_list);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001686 struct discard_entry *entry, *this;
1687
1688 /* drop caches */
Chao Yuaf8ff652018-04-25 17:38:29 +08001689 list_for_each_entry_safe(entry, this, head, list)
1690 release_discard_addr(entry);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001691}
1692
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09001693/*
Chao Yu4d57b862018-05-30 00:20:41 +08001694 * Should call f2fs_clear_prefree_segments after checkpoint is done.
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001695 */
1696static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi)
1697{
1698 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
Chao Yub65ee142014-08-04 10:10:07 +08001699 unsigned int segno;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001700
1701 mutex_lock(&dirty_i->seglist_lock);
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07001702 for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi))
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001703 __set_test_and_free(sbi, segno);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001704 mutex_unlock(&dirty_i->seglist_lock);
1705}
1706
Chao Yu4d57b862018-05-30 00:20:41 +08001707void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi,
1708 struct cp_control *cpc)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001709{
Chao Yu969d1b12017-08-07 23:09:56 +08001710 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1711 struct list_head *head = &dcc->entry_list;
Chao Yu2d7b8222014-03-29 11:33:17 +08001712 struct discard_entry *entry, *this;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001713 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
Changman Lee29e59c12013-11-11 09:24:37 +09001714 unsigned long *prefree_map = dirty_i->dirty_segmap[PRE];
Changman Lee29e59c12013-11-11 09:24:37 +09001715 unsigned int start = 0, end = -1;
Jaegeuk Kim36abef42016-06-03 19:29:38 -07001716 unsigned int secno, start_segno;
Chao Yuc473f1a2017-04-27 20:40:39 +08001717 bool force = (cpc->reason & CP_DISCARD);
Yunlong Songad6672b2018-07-19 20:58:15 +08001718 bool need_align = test_opt(sbi, LFS) && sbi->segs_per_sec > 1;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001719
1720 mutex_lock(&dirty_i->seglist_lock);
Changman Lee29e59c12013-11-11 09:24:37 +09001721
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001722 while (1) {
Changman Lee29e59c12013-11-11 09:24:37 +09001723 int i;
Yunlong Songad6672b2018-07-19 20:58:15 +08001724
1725 if (need_align && end != -1)
1726 end--;
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07001727 start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1);
1728 if (start >= MAIN_SEGS(sbi))
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001729 break;
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07001730 end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi),
1731 start + 1);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001732
Yunlong Songad6672b2018-07-19 20:58:15 +08001733 if (need_align) {
1734 start = rounddown(start, sbi->segs_per_sec);
1735 end = roundup(end, sbi->segs_per_sec);
1736 }
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001737
Yunlong Songad6672b2018-07-19 20:58:15 +08001738 for (i = start; i < end; i++) {
1739 if (test_and_clear_bit(i, prefree_map))
1740 dirty_i->nr_dirty[PRE]--;
1741 }
Changman Lee29e59c12013-11-11 09:24:37 +09001742
Yunlei He650d3c42016-12-22 11:46:24 +08001743 if (!test_opt(sbi, DISCARD))
Changman Lee29e59c12013-11-11 09:24:37 +09001744 continue;
1745
Yunlei He650d3c42016-12-22 11:46:24 +08001746 if (force && start >= cpc->trim_start &&
1747 (end - 1) <= cpc->trim_end)
1748 continue;
1749
Jaegeuk Kim36abef42016-06-03 19:29:38 -07001750 if (!test_opt(sbi, LFS) || sbi->segs_per_sec == 1) {
1751 f2fs_issue_discard(sbi, START_BLOCK(sbi, start),
Jaegeuk Kim37208872013-11-12 16:55:17 +09001752 (end - start) << sbi->log_blocks_per_seg);
Jaegeuk Kim36abef42016-06-03 19:29:38 -07001753 continue;
1754 }
1755next:
Jaegeuk Kim4ddb1a42017-04-07 15:08:17 -07001756 secno = GET_SEC_FROM_SEG(sbi, start);
1757 start_segno = GET_SEG_FROM_SEC(sbi, secno);
Jaegeuk Kim36abef42016-06-03 19:29:38 -07001758 if (!IS_CURSEC(sbi, secno) &&
Jaegeuk Kim302bd342017-04-07 14:33:22 -07001759 !get_valid_blocks(sbi, start, true))
Jaegeuk Kim36abef42016-06-03 19:29:38 -07001760 f2fs_issue_discard(sbi, START_BLOCK(sbi, start_segno),
1761 sbi->segs_per_sec << sbi->log_blocks_per_seg);
1762
1763 start = start_segno + sbi->segs_per_sec;
1764 if (start < end)
1765 goto next;
Jaegeuk Kim8b107f52017-02-27 11:57:11 -08001766 else
1767 end = start - 1;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001768 }
1769 mutex_unlock(&dirty_i->seglist_lock);
Jaegeuk Kimb2955552013-11-12 14:49:56 +09001770
1771 /* send small discards */
Chao Yu2d7b8222014-03-29 11:33:17 +08001772 list_for_each_entry_safe(entry, this, head, list) {
Chao Yua7eeb8232017-03-28 18:18:50 +08001773 unsigned int cur_pos = 0, next_pos, len, total_len = 0;
1774 bool is_valid = test_bit_le(0, entry->discard_map);
1775
1776find_next:
1777 if (is_valid) {
1778 next_pos = find_next_zero_bit_le(entry->discard_map,
1779 sbi->blocks_per_seg, cur_pos);
1780 len = next_pos - cur_pos;
1781
Sheng Yongccd31cb2018-02-06 12:31:17 +08001782 if (f2fs_sb_has_blkzoned(sbi->sb) ||
Damien Le Moalacfd28102017-05-26 17:04:40 +09001783 (force && len < cpc->trim_minlen))
Chao Yua7eeb8232017-03-28 18:18:50 +08001784 goto skip;
1785
1786 f2fs_issue_discard(sbi, entry->start_blkaddr + cur_pos,
1787 len);
Chao Yua7eeb8232017-03-28 18:18:50 +08001788 total_len += len;
1789 } else {
1790 next_pos = find_next_bit_le(entry->discard_map,
1791 sbi->blocks_per_seg, cur_pos);
1792 }
Jaegeuk Kim836b5a62015-04-30 22:50:06 -07001793skip:
Chao Yua7eeb8232017-03-28 18:18:50 +08001794 cur_pos = next_pos;
1795 is_valid = !is_valid;
1796
1797 if (cur_pos < sbi->blocks_per_seg)
1798 goto find_next;
1799
Chao Yuaf8ff652018-04-25 17:38:29 +08001800 release_discard_addr(entry);
Chao Yu969d1b12017-08-07 23:09:56 +08001801 dcc->nr_discards -= total_len;
Jaegeuk Kimb2955552013-11-12 14:49:56 +09001802 }
Chao Yu34e159d2017-04-25 00:21:34 +08001803
Jaegeuk Kim01983c72017-08-22 21:15:43 -07001804 wake_up_discard_thread(sbi, false);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001805}
1806
Jaegeuk Kim8ed59742017-01-29 14:27:02 +09001807static int create_discard_cmd_control(struct f2fs_sb_info *sbi)
Jaegeuk Kim0b54fb82017-01-11 14:40:24 -08001808{
Jaegeuk Kim15469962017-01-09 20:32:07 -08001809 dev_t dev = sbi->sb->s_bdev->bd_dev;
Jaegeuk Kim0b54fb82017-01-11 14:40:24 -08001810 struct discard_cmd_control *dcc;
Chao Yuba48a332017-04-15 14:09:37 +08001811 int err = 0, i;
Jaegeuk Kim0b54fb82017-01-11 14:40:24 -08001812
1813 if (SM_I(sbi)->dcc_info) {
1814 dcc = SM_I(sbi)->dcc_info;
1815 goto init_thread;
1816 }
1817
Chao Yuacbf0542017-11-30 19:28:17 +08001818 dcc = f2fs_kzalloc(sbi, sizeof(struct discard_cmd_control), GFP_KERNEL);
Jaegeuk Kim0b54fb82017-01-11 14:40:24 -08001819 if (!dcc)
1820 return -ENOMEM;
1821
Chao Yu969d1b12017-08-07 23:09:56 +08001822 dcc->discard_granularity = DEFAULT_DISCARD_GRANULARITY;
Chao Yu46f84c22017-04-15 14:09:36 +08001823 INIT_LIST_HEAD(&dcc->entry_list);
Chao Yu78997b52017-10-04 09:08:34 +08001824 for (i = 0; i < MAX_PLIST_NUM; i++)
Chao Yuba48a332017-04-15 14:09:37 +08001825 INIT_LIST_HEAD(&dcc->pend_list[i]);
Chao Yu46f84c22017-04-15 14:09:36 +08001826 INIT_LIST_HEAD(&dcc->wait_list);
Chao Yu84126632017-10-04 09:08:32 +08001827 INIT_LIST_HEAD(&dcc->fstrim_list);
Jaegeuk Kim15469962017-01-09 20:32:07 -08001828 mutex_init(&dcc->cmd_lock);
Chao Yu8b8dd652017-03-25 17:19:58 +08001829 atomic_set(&dcc->issued_discard, 0);
1830 atomic_set(&dcc->issing_discard, 0);
Chao Yu5f323662017-03-25 17:19:59 +08001831 atomic_set(&dcc->discard_cmd_cnt, 0);
Jaegeuk Kim0b54fb82017-01-11 14:40:24 -08001832 dcc->nr_discards = 0;
Chao Yud618eba2017-04-25 00:21:35 +08001833 dcc->max_discards = MAIN_SEGS(sbi) << sbi->log_blocks_per_seg;
Chao Yud84d1cb2017-04-18 19:27:39 +08001834 dcc->undiscard_blks = 0;
Chao Yu20ee4382018-07-08 22:11:01 +08001835 dcc->next_pos = 0;
Chao Yu004b6862017-04-14 23:24:55 +08001836 dcc->root = RB_ROOT;
Chao Yu67fce702018-06-22 16:06:59 +08001837 dcc->rbtree_check = false;
Jaegeuk Kim0b54fb82017-01-11 14:40:24 -08001838
Jaegeuk Kim15469962017-01-09 20:32:07 -08001839 init_waitqueue_head(&dcc->discard_wait_queue);
Jaegeuk Kim0b54fb82017-01-11 14:40:24 -08001840 SM_I(sbi)->dcc_info = dcc;
1841init_thread:
Jaegeuk Kim15469962017-01-09 20:32:07 -08001842 dcc->f2fs_issue_discard = kthread_run(issue_discard_thread, sbi,
1843 "f2fs_discard-%u:%u", MAJOR(dev), MINOR(dev));
1844 if (IS_ERR(dcc->f2fs_issue_discard)) {
1845 err = PTR_ERR(dcc->f2fs_issue_discard);
1846 kfree(dcc);
1847 SM_I(sbi)->dcc_info = NULL;
1848 return err;
1849 }
1850
Jaegeuk Kim0b54fb82017-01-11 14:40:24 -08001851 return err;
1852}
1853
Chao Yuf0994052017-03-27 18:14:04 +08001854static void destroy_discard_cmd_control(struct f2fs_sb_info *sbi)
Jaegeuk Kim0b54fb82017-01-11 14:40:24 -08001855{
1856 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1857
Chao Yuf0994052017-03-27 18:14:04 +08001858 if (!dcc)
1859 return;
1860
Chao Yu4d57b862018-05-30 00:20:41 +08001861 f2fs_stop_discard_thread(sbi);
Chao Yuf0994052017-03-27 18:14:04 +08001862
1863 kfree(dcc);
1864 SM_I(sbi)->dcc_info = NULL;
Jaegeuk Kim0b54fb82017-01-11 14:40:24 -08001865}
1866
Chao Yu184a5cd2014-09-04 18:13:01 +08001867static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001868{
1869 struct sit_info *sit_i = SIT_I(sbi);
Chao Yu184a5cd2014-09-04 18:13:01 +08001870
1871 if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) {
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001872 sit_i->dirty_sentries++;
Chao Yu184a5cd2014-09-04 18:13:01 +08001873 return false;
1874 }
1875
1876 return true;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001877}
1878
1879static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type,
1880 unsigned int segno, int modified)
1881{
1882 struct seg_entry *se = get_seg_entry(sbi, segno);
1883 se->type = type;
1884 if (modified)
1885 __mark_sit_entry_dirty(sbi, segno);
1886}
1887
1888static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del)
1889{
1890 struct seg_entry *se;
1891 unsigned int segno, offset;
1892 long int new_vblocks;
Yunlong Song6415fed2017-08-02 21:20:13 +08001893 bool exist;
1894#ifdef CONFIG_F2FS_CHECK_FS
1895 bool mir_exist;
1896#endif
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001897
1898 segno = GET_SEGNO(sbi, blkaddr);
1899
1900 se = get_seg_entry(sbi, segno);
1901 new_vblocks = se->valid_blocks + del;
Jaegeuk Kim491c0852014-02-04 13:01:10 +09001902 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001903
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001904 f2fs_bug_on(sbi, (new_vblocks >> (sizeof(unsigned short) << 3) ||
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001905 (new_vblocks > sbi->blocks_per_seg)));
1906
1907 se->valid_blocks = new_vblocks;
Chao Yua1f72ac22018-06-04 23:20:17 +08001908 se->mtime = get_mtime(sbi, false);
1909 if (se->mtime > SIT_I(sbi)->max_mtime)
1910 SIT_I(sbi)->max_mtime = se->mtime;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001911
1912 /* Update valid block bitmap */
1913 if (del > 0) {
Yunlong Song6415fed2017-08-02 21:20:13 +08001914 exist = f2fs_test_and_set_bit(offset, se->cur_valid_map);
Chao Yu355e7892017-01-07 18:51:01 +08001915#ifdef CONFIG_F2FS_CHECK_FS
Yunlong Song6415fed2017-08-02 21:20:13 +08001916 mir_exist = f2fs_test_and_set_bit(offset,
1917 se->cur_valid_map_mir);
1918 if (unlikely(exist != mir_exist)) {
1919 f2fs_msg(sbi->sb, KERN_ERR, "Inconsistent error "
1920 "when setting bitmap, blk:%u, old bit:%d",
1921 blkaddr, exist);
Jaegeuk Kim05796762014-09-02 16:05:00 -07001922 f2fs_bug_on(sbi, 1);
Chao Yu355e7892017-01-07 18:51:01 +08001923 }
Yunlong Song6415fed2017-08-02 21:20:13 +08001924#endif
1925 if (unlikely(exist)) {
1926 f2fs_msg(sbi->sb, KERN_ERR,
1927 "Bitmap was wrongly set, blk:%u", blkaddr);
1928 f2fs_bug_on(sbi, 1);
Yunlong Song35ee82c2017-08-02 22:16:54 +08001929 se->valid_blocks--;
1930 del = 0;
Yunlong Song6415fed2017-08-02 21:20:13 +08001931 }
1932
Jaegeuk Kim3e025742016-08-02 10:56:40 -07001933 if (f2fs_discard_en(sbi) &&
1934 !f2fs_test_and_set_bit(offset, se->discard_map))
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001935 sbi->discard_blks--;
Jaegeuk Kim720037f2017-03-06 11:59:56 -08001936
1937 /* don't overwrite by SSR to keep node chain */
Yunlei He5d7881c2018-03-07 16:22:50 +08001938 if (IS_NODESEG(se->type)) {
Jaegeuk Kim720037f2017-03-06 11:59:56 -08001939 if (!f2fs_test_and_set_bit(offset, se->ckpt_valid_map))
1940 se->ckpt_valid_blocks++;
1941 }
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001942 } else {
Yunlong Song6415fed2017-08-02 21:20:13 +08001943 exist = f2fs_test_and_clear_bit(offset, se->cur_valid_map);
Chao Yu355e7892017-01-07 18:51:01 +08001944#ifdef CONFIG_F2FS_CHECK_FS
Yunlong Song6415fed2017-08-02 21:20:13 +08001945 mir_exist = f2fs_test_and_clear_bit(offset,
1946 se->cur_valid_map_mir);
1947 if (unlikely(exist != mir_exist)) {
1948 f2fs_msg(sbi->sb, KERN_ERR, "Inconsistent error "
1949 "when clearing bitmap, blk:%u, old bit:%d",
1950 blkaddr, exist);
Jaegeuk Kim05796762014-09-02 16:05:00 -07001951 f2fs_bug_on(sbi, 1);
Chao Yu355e7892017-01-07 18:51:01 +08001952 }
Yunlong Song6415fed2017-08-02 21:20:13 +08001953#endif
1954 if (unlikely(!exist)) {
1955 f2fs_msg(sbi->sb, KERN_ERR,
1956 "Bitmap was wrongly cleared, blk:%u", blkaddr);
1957 f2fs_bug_on(sbi, 1);
Yunlong Song35ee82c2017-08-02 22:16:54 +08001958 se->valid_blocks++;
1959 del = 0;
Yunlong Song6415fed2017-08-02 21:20:13 +08001960 }
1961
Jaegeuk Kim3e025742016-08-02 10:56:40 -07001962 if (f2fs_discard_en(sbi) &&
1963 f2fs_test_and_clear_bit(offset, se->discard_map))
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001964 sbi->discard_blks++;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001965 }
1966 if (!f2fs_test_bit(offset, se->ckpt_valid_map))
1967 se->ckpt_valid_blocks += del;
1968
1969 __mark_sit_entry_dirty(sbi, segno);
1970
1971 /* update total number of valid blocks to be written in ckpt area */
1972 SIT_I(sbi)->written_valid_blocks += del;
1973
1974 if (sbi->segs_per_sec > 1)
1975 get_sec_entry(sbi, segno)->valid_blocks += del;
1976}
1977
Chao Yu4d57b862018-05-30 00:20:41 +08001978void f2fs_invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001979{
1980 unsigned int segno = GET_SEGNO(sbi, addr);
1981 struct sit_info *sit_i = SIT_I(sbi);
1982
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001983 f2fs_bug_on(sbi, addr == NULL_ADDR);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001984 if (addr == NEW_ADDR)
1985 return;
1986
1987 /* add it into sit main buffer */
Chao Yu3d26fa62017-10-30 17:49:53 +08001988 down_write(&sit_i->sentry_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001989
1990 update_sit_entry(sbi, addr, -1);
1991
1992 /* add it into dirty seglist */
1993 locate_dirty_segment(sbi, segno);
1994
Chao Yu3d26fa62017-10-30 17:49:53 +08001995 up_write(&sit_i->sentry_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09001996}
1997
Chao Yu4d57b862018-05-30 00:20:41 +08001998bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr)
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001999{
2000 struct sit_info *sit_i = SIT_I(sbi);
2001 unsigned int segno, offset;
2002 struct seg_entry *se;
2003 bool is_cp = false;
2004
Chao Yue1da7872018-06-05 17:44:11 +08002005 if (!is_valid_data_blkaddr(sbi, blkaddr))
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07002006 return true;
2007
Chao Yu3d26fa62017-10-30 17:49:53 +08002008 down_read(&sit_i->sentry_lock);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07002009
2010 segno = GET_SEGNO(sbi, blkaddr);
2011 se = get_seg_entry(sbi, segno);
2012 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
2013
2014 if (f2fs_test_bit(offset, se->ckpt_valid_map))
2015 is_cp = true;
2016
Chao Yu3d26fa62017-10-30 17:49:53 +08002017 up_read(&sit_i->sentry_lock);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07002018
2019 return is_cp;
2020}
2021
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09002022/*
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002023 * This function should be resided under the curseg_mutex lock
2024 */
2025static void __add_sum_entry(struct f2fs_sb_info *sbi, int type,
Haicheng Lie79efe32013-06-13 16:59:27 +08002026 struct f2fs_summary *sum)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002027{
2028 struct curseg_info *curseg = CURSEG_I(sbi, type);
2029 void *addr = curseg->sum_blk;
Haicheng Lie79efe32013-06-13 16:59:27 +08002030 addr += curseg->next_blkoff * sizeof(struct f2fs_summary);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002031 memcpy(addr, sum, sizeof(struct f2fs_summary));
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002032}
2033
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09002034/*
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002035 * Calculate the number of current summary pages for writing
2036 */
Chao Yu4d57b862018-05-30 00:20:41 +08002037int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002038{
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002039 int valid_sum_count = 0;
Fan Li9a479382013-10-29 16:21:47 +08002040 int i, sum_in_page;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002041
2042 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
2043 if (sbi->ckpt->alloc_type[i] == SSR)
2044 valid_sum_count += sbi->blocks_per_seg;
Chao Yu3fa06d72014-12-09 14:21:46 +08002045 else {
2046 if (for_ra)
2047 valid_sum_count += le16_to_cpu(
2048 F2FS_CKPT(sbi)->cur_data_blkoff[i]);
2049 else
2050 valid_sum_count += curseg_blkoff(sbi, i);
2051 }
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002052 }
2053
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03002054 sum_in_page = (PAGE_SIZE - 2 * SUM_JOURNAL_SIZE -
Fan Li9a479382013-10-29 16:21:47 +08002055 SUM_FOOTER_SIZE) / SUMMARY_SIZE;
2056 if (valid_sum_count <= sum_in_page)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002057 return 1;
Fan Li9a479382013-10-29 16:21:47 +08002058 else if ((valid_sum_count - sum_in_page) <=
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03002059 (PAGE_SIZE - SUM_FOOTER_SIZE) / SUMMARY_SIZE)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002060 return 2;
2061 return 3;
2062}
2063
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09002064/*
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002065 * Caller should put this summary page
2066 */
Chao Yu4d57b862018-05-30 00:20:41 +08002067struct page *f2fs_get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002068{
Chao Yu77357302018-07-17 00:02:17 +08002069 return f2fs_get_meta_page_nofail(sbi, GET_SUM_BLOCK(sbi, segno));
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002070}
2071
Chao Yu4d57b862018-05-30 00:20:41 +08002072void f2fs_update_meta_page(struct f2fs_sb_info *sbi,
2073 void *src, block_t blk_addr)
Chao Yu381722d2015-05-19 17:40:04 +08002074{
Chao Yu4d57b862018-05-30 00:20:41 +08002075 struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
Chao Yu381722d2015-05-19 17:40:04 +08002076
Chao Yu0537b812017-11-02 20:41:02 +08002077 memcpy(page_address(page), src, PAGE_SIZE);
Chao Yu381722d2015-05-19 17:40:04 +08002078 set_page_dirty(page);
2079 f2fs_put_page(page, 1);
2080}
2081
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002082static void write_sum_page(struct f2fs_sb_info *sbi,
2083 struct f2fs_summary_block *sum_blk, block_t blk_addr)
2084{
Chao Yu4d57b862018-05-30 00:20:41 +08002085 f2fs_update_meta_page(sbi, (void *)sum_blk, blk_addr);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002086}
2087
Chao Yub7ad7512016-02-19 18:08:46 +08002088static void write_current_sum_page(struct f2fs_sb_info *sbi,
2089 int type, block_t blk_addr)
2090{
2091 struct curseg_info *curseg = CURSEG_I(sbi, type);
Chao Yu4d57b862018-05-30 00:20:41 +08002092 struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
Chao Yub7ad7512016-02-19 18:08:46 +08002093 struct f2fs_summary_block *src = curseg->sum_blk;
2094 struct f2fs_summary_block *dst;
2095
2096 dst = (struct f2fs_summary_block *)page_address(page);
Chao Yu81114ba2018-04-09 20:25:06 +08002097 memset(dst, 0, PAGE_SIZE);
Chao Yub7ad7512016-02-19 18:08:46 +08002098
2099 mutex_lock(&curseg->curseg_mutex);
2100
2101 down_read(&curseg->journal_rwsem);
2102 memcpy(&dst->journal, curseg->journal, SUM_JOURNAL_SIZE);
2103 up_read(&curseg->journal_rwsem);
2104
2105 memcpy(dst->entries, src->entries, SUM_ENTRY_SIZE);
2106 memcpy(&dst->footer, &src->footer, SUM_FOOTER_SIZE);
2107
2108 mutex_unlock(&curseg->curseg_mutex);
2109
2110 set_page_dirty(page);
2111 f2fs_put_page(page, 1);
2112}
2113
Jaegeuk Kima7881892017-04-20 13:51:57 -07002114static int is_next_segment_free(struct f2fs_sb_info *sbi, int type)
2115{
2116 struct curseg_info *curseg = CURSEG_I(sbi, type);
2117 unsigned int segno = curseg->segno + 1;
2118 struct free_segmap_info *free_i = FREE_I(sbi);
2119
2120 if (segno < MAIN_SEGS(sbi) && segno % sbi->segs_per_sec)
2121 return !test_bit(segno, free_i->free_segmap);
2122 return 0;
2123}
2124
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09002125/*
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002126 * Find a new segment from the free segments bitmap to right order
2127 * This function should be returned with success, otherwise BUG
2128 */
2129static void get_new_segment(struct f2fs_sb_info *sbi,
2130 unsigned int *newseg, bool new_sec, int dir)
2131{
2132 struct free_segmap_info *free_i = FREE_I(sbi);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002133 unsigned int segno, secno, zoneno;
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07002134 unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone;
Jaegeuk Kim4ddb1a42017-04-07 15:08:17 -07002135 unsigned int hint = GET_SEC_FROM_SEG(sbi, *newseg);
2136 unsigned int old_zoneno = GET_ZONE_FROM_SEG(sbi, *newseg);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002137 unsigned int left_start = hint;
2138 bool init = true;
2139 int go_left = 0;
2140 int i;
2141
Chao Yu1a118cc2015-02-11 18:20:38 +08002142 spin_lock(&free_i->segmap_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002143
2144 if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) {
2145 segno = find_next_zero_bit(free_i->free_segmap,
Jaegeuk Kim4ddb1a42017-04-07 15:08:17 -07002146 GET_SEG_FROM_SEC(sbi, hint + 1), *newseg + 1);
2147 if (segno < GET_SEG_FROM_SEC(sbi, hint + 1))
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002148 goto got_it;
2149 }
2150find_other_zone:
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07002151 secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint);
2152 if (secno >= MAIN_SECS(sbi)) {
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002153 if (dir == ALLOC_RIGHT) {
2154 secno = find_next_zero_bit(free_i->free_secmap,
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07002155 MAIN_SECS(sbi), 0);
2156 f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi));
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002157 } else {
2158 go_left = 1;
2159 left_start = hint - 1;
2160 }
2161 }
2162 if (go_left == 0)
2163 goto skip_left;
2164
2165 while (test_bit(left_start, free_i->free_secmap)) {
2166 if (left_start > 0) {
2167 left_start--;
2168 continue;
2169 }
2170 left_start = find_next_zero_bit(free_i->free_secmap,
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07002171 MAIN_SECS(sbi), 0);
2172 f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi));
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002173 break;
2174 }
2175 secno = left_start;
2176skip_left:
Jaegeuk Kim4ddb1a42017-04-07 15:08:17 -07002177 segno = GET_SEG_FROM_SEC(sbi, secno);
2178 zoneno = GET_ZONE_FROM_SEC(sbi, secno);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002179
2180 /* give up on finding another zone */
2181 if (!init)
2182 goto got_it;
2183 if (sbi->secs_per_zone == 1)
2184 goto got_it;
2185 if (zoneno == old_zoneno)
2186 goto got_it;
2187 if (dir == ALLOC_LEFT) {
2188 if (!go_left && zoneno + 1 >= total_zones)
2189 goto got_it;
2190 if (go_left && zoneno == 0)
2191 goto got_it;
2192 }
2193 for (i = 0; i < NR_CURSEG_TYPE; i++)
2194 if (CURSEG_I(sbi, i)->zone == zoneno)
2195 break;
2196
2197 if (i < NR_CURSEG_TYPE) {
2198 /* zone is in user, try another */
2199 if (go_left)
2200 hint = zoneno * sbi->secs_per_zone - 1;
2201 else if (zoneno + 1 >= total_zones)
2202 hint = 0;
2203 else
2204 hint = (zoneno + 1) * sbi->secs_per_zone;
2205 init = false;
2206 goto find_other_zone;
2207 }
2208got_it:
2209 /* set it as dirty segment in free segmap */
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07002210 f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap));
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002211 __set_inuse(sbi, segno);
2212 *newseg = segno;
Chao Yu1a118cc2015-02-11 18:20:38 +08002213 spin_unlock(&free_i->segmap_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002214}
2215
2216static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified)
2217{
2218 struct curseg_info *curseg = CURSEG_I(sbi, type);
2219 struct summary_footer *sum_footer;
2220
2221 curseg->segno = curseg->next_segno;
Jaegeuk Kim4ddb1a42017-04-07 15:08:17 -07002222 curseg->zone = GET_ZONE_FROM_SEG(sbi, curseg->segno);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002223 curseg->next_blkoff = 0;
2224 curseg->next_segno = NULL_SEGNO;
2225
2226 sum_footer = &(curseg->sum_blk->footer);
2227 memset(sum_footer, 0, sizeof(struct summary_footer));
2228 if (IS_DATASEG(type))
2229 SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA);
2230 if (IS_NODESEG(type))
2231 SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE);
2232 __set_sit_entry_type(sbi, type, curseg->segno, modified);
2233}
2234
Jaegeuk Kim7a20b8a2017-03-24 20:41:45 -04002235static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type)
2236{
Jaegeuk Kima7881892017-04-20 13:51:57 -07002237 /* if segs_per_sec is large than 1, we need to keep original policy. */
2238 if (sbi->segs_per_sec != 1)
2239 return CURSEG_I(sbi, type)->segno;
2240
Yunlong Songb94929d2018-01-29 11:37:45 +08002241 if (test_opt(sbi, NOHEAP) &&
2242 (type == CURSEG_HOT_DATA || IS_NODESEG(type)))
Jaegeuk Kim7a20b8a2017-03-24 20:41:45 -04002243 return 0;
2244
Jaegeuk Kime066b832017-04-13 15:17:00 -07002245 if (SIT_I(sbi)->last_victim[ALLOC_NEXT])
2246 return SIT_I(sbi)->last_victim[ALLOC_NEXT];
Jaegeuk Kim07939622018-02-18 08:50:49 -08002247
2248 /* find segments from 0 to reuse freed segments */
Chao Yu63189b72018-03-08 14:22:56 +08002249 if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
Jaegeuk Kim07939622018-02-18 08:50:49 -08002250 return 0;
2251
Jaegeuk Kim7a20b8a2017-03-24 20:41:45 -04002252 return CURSEG_I(sbi, type)->segno;
2253}
2254
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09002255/*
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002256 * Allocate a current working segment.
2257 * This function always allocates a free segment in LFS manner.
2258 */
2259static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec)
2260{
2261 struct curseg_info *curseg = CURSEG_I(sbi, type);
2262 unsigned int segno = curseg->segno;
2263 int dir = ALLOC_LEFT;
2264
2265 write_sum_page(sbi, curseg->sum_blk,
Haicheng Li81fb5e82013-05-14 18:20:28 +08002266 GET_SUM_BLOCK(sbi, segno));
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002267 if (type == CURSEG_WARM_DATA || type == CURSEG_COLD_DATA)
2268 dir = ALLOC_RIGHT;
2269
2270 if (test_opt(sbi, NOHEAP))
2271 dir = ALLOC_RIGHT;
2272
Jaegeuk Kim7a20b8a2017-03-24 20:41:45 -04002273 segno = __get_next_segno(sbi, type);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002274 get_new_segment(sbi, &segno, new_sec, dir);
2275 curseg->next_segno = segno;
2276 reset_curseg(sbi, type, 1);
2277 curseg->alloc_type = LFS;
2278}
2279
2280static void __next_free_blkoff(struct f2fs_sb_info *sbi,
2281 struct curseg_info *seg, block_t start)
2282{
2283 struct seg_entry *se = get_seg_entry(sbi, seg->segno);
Changman Leee81c93c2013-11-15 13:21:16 +09002284 int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long);
Jaegeuk Kim60a3b782015-02-10 16:44:29 -08002285 unsigned long *target_map = SIT_I(sbi)->tmp_map;
Changman Leee81c93c2013-11-15 13:21:16 +09002286 unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map;
2287 unsigned long *cur_map = (unsigned long *)se->cur_valid_map;
2288 int i, pos;
2289
2290 for (i = 0; i < entries; i++)
2291 target_map[i] = ckpt_map[i] | cur_map[i];
2292
2293 pos = __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start);
2294
2295 seg->next_blkoff = pos;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002296}
2297
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09002298/*
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002299 * If a segment is written by LFS manner, next block offset is just obtained
2300 * by increasing the current block offset. However, if a segment is written by
2301 * SSR manner, next block offset obtained by calling __next_free_blkoff
2302 */
2303static void __refresh_next_blkoff(struct f2fs_sb_info *sbi,
2304 struct curseg_info *seg)
2305{
2306 if (seg->alloc_type == SSR)
2307 __next_free_blkoff(sbi, seg, seg->next_blkoff + 1);
2308 else
2309 seg->next_blkoff++;
2310}
2311
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09002312/*
arter97e1c42042014-08-06 23:22:50 +09002313 * This function always allocates a used segment(from dirty seglist) by SSR
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002314 * manner, so it should recover the existing segment information of valid blocks
2315 */
Chao Yu025d63a2017-08-30 18:04:48 +08002316static void change_curseg(struct f2fs_sb_info *sbi, int type)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002317{
2318 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
2319 struct curseg_info *curseg = CURSEG_I(sbi, type);
2320 unsigned int new_segno = curseg->next_segno;
2321 struct f2fs_summary_block *sum_node;
2322 struct page *sum_page;
2323
2324 write_sum_page(sbi, curseg->sum_blk,
2325 GET_SUM_BLOCK(sbi, curseg->segno));
2326 __set_test_and_inuse(sbi, new_segno);
2327
2328 mutex_lock(&dirty_i->seglist_lock);
2329 __remove_dirty_segment(sbi, new_segno, PRE);
2330 __remove_dirty_segment(sbi, new_segno, DIRTY);
2331 mutex_unlock(&dirty_i->seglist_lock);
2332
2333 reset_curseg(sbi, type, 1);
2334 curseg->alloc_type = SSR;
2335 __next_free_blkoff(sbi, curseg, 0);
2336
Chao Yu4d57b862018-05-30 00:20:41 +08002337 sum_page = f2fs_get_sum_page(sbi, new_segno);
Chao Yu025d63a2017-08-30 18:04:48 +08002338 sum_node = (struct f2fs_summary_block *)page_address(sum_page);
2339 memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE);
2340 f2fs_put_page(sum_page, 1);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002341}
2342
Jaegeuk Kim43727522013-02-04 15:11:17 +09002343static int get_ssr_segment(struct f2fs_sb_info *sbi, int type)
2344{
2345 struct curseg_info *curseg = CURSEG_I(sbi, type);
2346 const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops;
Jaegeuk Kime066b832017-04-13 15:17:00 -07002347 unsigned segno = NULL_SEGNO;
Chao Yud27c3d82017-02-24 18:46:00 +08002348 int i, cnt;
2349 bool reversed = false;
Jaegeuk Kimc192f7a2017-02-22 17:10:18 -08002350
Chao Yu4d57b862018-05-30 00:20:41 +08002351 /* f2fs_need_SSR() already forces to do this */
Jaegeuk Kime066b832017-04-13 15:17:00 -07002352 if (v_ops->get_victim(sbi, &segno, BG_GC, type, SSR)) {
2353 curseg->next_segno = segno;
Jaegeuk Kimc192f7a2017-02-22 17:10:18 -08002354 return 1;
Jaegeuk Kime066b832017-04-13 15:17:00 -07002355 }
Jaegeuk Kim43727522013-02-04 15:11:17 +09002356
Jaegeuk Kim70d625c2017-02-22 17:02:32 -08002357 /* For node segments, let's do SSR more intensively */
2358 if (IS_NODESEG(type)) {
Chao Yud27c3d82017-02-24 18:46:00 +08002359 if (type >= CURSEG_WARM_NODE) {
2360 reversed = true;
2361 i = CURSEG_COLD_NODE;
2362 } else {
2363 i = CURSEG_HOT_NODE;
2364 }
2365 cnt = NR_CURSEG_NODE_TYPE;
Jaegeuk Kim70d625c2017-02-22 17:02:32 -08002366 } else {
Chao Yud27c3d82017-02-24 18:46:00 +08002367 if (type >= CURSEG_WARM_DATA) {
2368 reversed = true;
2369 i = CURSEG_COLD_DATA;
2370 } else {
2371 i = CURSEG_HOT_DATA;
2372 }
2373 cnt = NR_CURSEG_DATA_TYPE;
Jaegeuk Kim70d625c2017-02-22 17:02:32 -08002374 }
Jaegeuk Kim43727522013-02-04 15:11:17 +09002375
Chao Yud27c3d82017-02-24 18:46:00 +08002376 for (; cnt-- > 0; reversed ? i-- : i++) {
Jaegeuk Kimc192f7a2017-02-22 17:10:18 -08002377 if (i == type)
2378 continue;
Jaegeuk Kime066b832017-04-13 15:17:00 -07002379 if (v_ops->get_victim(sbi, &segno, BG_GC, i, SSR)) {
2380 curseg->next_segno = segno;
Jaegeuk Kim43727522013-02-04 15:11:17 +09002381 return 1;
Jaegeuk Kime066b832017-04-13 15:17:00 -07002382 }
Jaegeuk Kimc192f7a2017-02-22 17:10:18 -08002383 }
Jaegeuk Kim43727522013-02-04 15:11:17 +09002384 return 0;
2385}
2386
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002387/*
2388 * flush out current segment and replace it with new segment
2389 * This function should be returned with success, otherwise BUG
2390 */
2391static void allocate_segment_by_default(struct f2fs_sb_info *sbi,
2392 int type, bool force)
2393{
Jaegeuk Kima7881892017-04-20 13:51:57 -07002394 struct curseg_info *curseg = CURSEG_I(sbi, type);
2395
Gu Zheng7b405272013-08-19 09:41:15 +08002396 if (force)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002397 new_curseg(sbi, type, true);
Jaegeuk Kim5b6c6be2017-02-14 19:32:51 -08002398 else if (!is_set_ckpt_flags(sbi, CP_CRC_RECOVERY_FLAG) &&
2399 type == CURSEG_WARM_NODE)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002400 new_curseg(sbi, type, false);
Jaegeuk Kima7881892017-04-20 13:51:57 -07002401 else if (curseg->alloc_type == LFS && is_next_segment_free(sbi, type))
2402 new_curseg(sbi, type, false);
Chao Yu4d57b862018-05-30 00:20:41 +08002403 else if (f2fs_need_SSR(sbi) && get_ssr_segment(sbi, type))
Chao Yu025d63a2017-08-30 18:04:48 +08002404 change_curseg(sbi, type);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002405 else
2406 new_curseg(sbi, type, false);
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002407
Jaegeuk Kima7881892017-04-20 13:51:57 -07002408 stat_inc_seg_type(sbi, curseg);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002409}
2410
Chao Yu4d57b862018-05-30 00:20:41 +08002411void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002412{
Jaegeuk Kim6ae1be12016-11-11 12:31:40 -08002413 struct curseg_info *curseg;
2414 unsigned int old_segno;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002415 int i;
2416
Chao Yu3d26fa62017-10-30 17:49:53 +08002417 down_write(&SIT_I(sbi)->sentry_lock);
2418
Jaegeuk Kim6ae1be12016-11-11 12:31:40 -08002419 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
2420 curseg = CURSEG_I(sbi, i);
2421 old_segno = curseg->segno;
2422 SIT_I(sbi)->s_ops->allocate_segment(sbi, i, true);
2423 locate_dirty_segment(sbi, old_segno);
2424 }
Chao Yu3d26fa62017-10-30 17:49:53 +08002425
2426 up_write(&SIT_I(sbi)->sentry_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002427}
2428
2429static const struct segment_allocation default_salloc_ops = {
2430 .allocate_segment = allocate_segment_by_default,
2431};
2432
Chao Yu4d57b862018-05-30 00:20:41 +08002433bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi,
2434 struct cp_control *cpc)
Jaegeuk Kim25290fa2016-12-29 22:06:15 -08002435{
2436 __u64 trim_start = cpc->trim_start;
2437 bool has_candidate = false;
2438
Chao Yu3d26fa62017-10-30 17:49:53 +08002439 down_write(&SIT_I(sbi)->sentry_lock);
Jaegeuk Kim25290fa2016-12-29 22:06:15 -08002440 for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) {
2441 if (add_discard_addrs(sbi, cpc, true)) {
2442 has_candidate = true;
2443 break;
2444 }
2445 }
Chao Yu3d26fa62017-10-30 17:49:53 +08002446 up_write(&SIT_I(sbi)->sentry_lock);
Jaegeuk Kim25290fa2016-12-29 22:06:15 -08002447
2448 cpc->trim_start = trim_start;
2449 return has_candidate;
2450}
2451
Chao Yu01f9cf62018-06-25 20:33:24 +08002452static unsigned int __issue_discard_cmd_range(struct f2fs_sb_info *sbi,
Jaegeuk Kim9a997182018-05-24 13:57:26 -07002453 struct discard_policy *dpolicy,
2454 unsigned int start, unsigned int end)
2455{
2456 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
2457 struct discard_cmd *prev_dc = NULL, *next_dc = NULL;
2458 struct rb_node **insert_p = NULL, *insert_parent = NULL;
2459 struct discard_cmd *dc;
2460 struct blk_plug plug;
2461 int issued;
Chao Yu01f9cf62018-06-25 20:33:24 +08002462 unsigned int trimmed = 0;
Jaegeuk Kim9a997182018-05-24 13:57:26 -07002463
2464next:
2465 issued = 0;
2466
2467 mutex_lock(&dcc->cmd_lock);
Chao Yu67fce702018-06-22 16:06:59 +08002468 if (unlikely(dcc->rbtree_check))
2469 f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi,
2470 &dcc->root));
Jaegeuk Kim9a997182018-05-24 13:57:26 -07002471
Chao Yu4d57b862018-05-30 00:20:41 +08002472 dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,
Jaegeuk Kim9a997182018-05-24 13:57:26 -07002473 NULL, start,
2474 (struct rb_entry **)&prev_dc,
2475 (struct rb_entry **)&next_dc,
2476 &insert_p, &insert_parent, true);
2477 if (!dc)
2478 dc = next_dc;
2479
2480 blk_start_plug(&plug);
2481
2482 while (dc && dc->lstart <= end) {
2483 struct rb_node *node;
2484
2485 if (dc->len < dpolicy->granularity)
2486 goto skip;
2487
2488 if (dc->state != D_PREP) {
2489 list_move_tail(&dc->list, &dcc->fstrim_list);
2490 goto skip;
2491 }
2492
2493 __submit_discard_cmd(sbi, dpolicy, dc);
2494
2495 if (++issued >= dpolicy->max_requests) {
2496 start = dc->lstart + dc->len;
2497
2498 blk_finish_plug(&plug);
2499 mutex_unlock(&dcc->cmd_lock);
Chao Yu01f9cf62018-06-25 20:33:24 +08002500 trimmed += __wait_all_discard_cmd(sbi, NULL);
Jaegeuk Kim9a997182018-05-24 13:57:26 -07002501 congestion_wait(BLK_RW_ASYNC, HZ/50);
2502 goto next;
2503 }
2504skip:
2505 node = rb_next(&dc->rb_node);
2506 dc = rb_entry_safe(node, struct discard_cmd, rb_node);
2507
2508 if (fatal_signal_pending(current))
2509 break;
2510 }
2511
2512 blk_finish_plug(&plug);
2513 mutex_unlock(&dcc->cmd_lock);
Chao Yu01f9cf62018-06-25 20:33:24 +08002514
2515 return trimmed;
Jaegeuk Kim9a997182018-05-24 13:57:26 -07002516}
2517
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07002518int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range)
2519{
Jaegeuk Kimf7ef9b82015-02-09 12:02:44 -08002520 __u64 start = F2FS_BYTES_TO_BLK(range->start);
2521 __u64 end = start + F2FS_BYTES_TO_BLK(range->len) - 1;
Chao Yu377224c2018-04-09 10:25:23 +08002522 unsigned int start_segno, end_segno;
Chao Yu84126632017-10-04 09:08:32 +08002523 block_t start_block, end_block;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07002524 struct cp_control cpc;
Chao Yu78997b52017-10-04 09:08:34 +08002525 struct discard_policy dpolicy;
Chao Yu0ea80512017-10-28 16:52:32 +08002526 unsigned long long trimmed = 0;
Chao Yuc34f42e2015-12-23 17:50:30 +08002527 int err = 0;
Yunlong Songad6672b2018-07-19 20:58:15 +08002528 bool need_align = test_opt(sbi, LFS) && sbi->segs_per_sec > 1;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07002529
Jaegeuk Kim836b5a62015-04-30 22:50:06 -07002530 if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize)
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07002531 return -EINVAL;
2532
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07002533 if (end <= MAIN_BLKADDR(sbi))
Chao Yu3d165dc2018-04-08 20:39:03 +08002534 return -EINVAL;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07002535
Yunlei Heed214a12016-09-01 10:14:39 +08002536 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) {
2537 f2fs_msg(sbi->sb, KERN_WARNING,
2538 "Found FS corruption, run fsck to fix.");
Chao Yu3d165dc2018-04-08 20:39:03 +08002539 return -EIO;
Yunlei Heed214a12016-09-01 10:14:39 +08002540 }
2541
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07002542 /* start/end segment number in main_area */
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07002543 start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start);
2544 end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 :
2545 GET_SEGNO(sbi, end);
Yunlong Songad6672b2018-07-19 20:58:15 +08002546 if (need_align) {
2547 start_segno = rounddown(start_segno, sbi->segs_per_sec);
2548 end_segno = roundup(end_segno + 1, sbi->segs_per_sec) - 1;
2549 }
Chao Yu84126632017-10-04 09:08:32 +08002550
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07002551 cpc.reason = CP_DISCARD;
Jaegeuk Kim836b5a62015-04-30 22:50:06 -07002552 cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen));
Chao Yu377224c2018-04-09 10:25:23 +08002553 cpc.trim_start = start_segno;
2554 cpc.trim_end = end_segno;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07002555
Chao Yu377224c2018-04-09 10:25:23 +08002556 if (sbi->discard_blks == 0)
2557 goto out;
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07002558
Chao Yu377224c2018-04-09 10:25:23 +08002559 mutex_lock(&sbi->gc_mutex);
Chao Yu4d57b862018-05-30 00:20:41 +08002560 err = f2fs_write_checkpoint(sbi, &cpc);
Chao Yu377224c2018-04-09 10:25:23 +08002561 mutex_unlock(&sbi->gc_mutex);
2562 if (err)
2563 goto out;
Chao Yu84126632017-10-04 09:08:32 +08002564
Jaegeuk Kime555da92018-05-31 10:20:48 -07002565 /*
2566 * We filed discard candidates, but actually we don't need to wait for
2567 * all of them, since they'll be issued in idle time along with runtime
2568 * discard option. User configuration looks like using runtime discard
2569 * or periodic fstrim instead of it.
2570 */
Jaegeuk Kim5a615492018-06-20 21:27:21 -07002571 if (test_opt(sbi, DISCARD))
2572 goto out;
2573
2574 start_block = START_BLOCK(sbi, start_segno);
2575 end_block = START_BLOCK(sbi, end_segno + 1);
2576
2577 __init_discard_policy(sbi, &dpolicy, DPOLICY_FSTRIM, cpc.trim_minlen);
Chao Yu01f9cf62018-06-25 20:33:24 +08002578 trimmed = __issue_discard_cmd_range(sbi, &dpolicy,
2579 start_block, end_block);
Jaegeuk Kim5a615492018-06-20 21:27:21 -07002580
Chao Yu01f9cf62018-06-25 20:33:24 +08002581 trimmed += __wait_discard_cmd_range(sbi, &dpolicy,
Chao Yu0ea80512017-10-28 16:52:32 +08002582 start_block, end_block);
Jaegeuk Kim5a615492018-06-20 21:27:21 -07002583 range->len = F2FS_BLK_TO_BYTES(trimmed);
Chao Yu377224c2018-04-09 10:25:23 +08002584out:
Chao Yuc34f42e2015-12-23 17:50:30 +08002585 return err;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07002586}
2587
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002588static bool __has_curseg_space(struct f2fs_sb_info *sbi, int type)
2589{
2590 struct curseg_info *curseg = CURSEG_I(sbi, type);
2591 if (curseg->next_blkoff < sbi->blocks_per_seg)
2592 return true;
2593 return false;
2594}
2595
Chao Yu4d57b862018-05-30 00:20:41 +08002596int f2fs_rw_hint_to_seg_type(enum rw_hint hint)
Hyunchul Lee4f0a03d32017-11-09 14:51:27 +09002597{
2598 switch (hint) {
2599 case WRITE_LIFE_SHORT:
2600 return CURSEG_HOT_DATA;
2601 case WRITE_LIFE_EXTREME:
2602 return CURSEG_COLD_DATA;
2603 default:
2604 return CURSEG_WARM_DATA;
2605 }
2606}
2607
Hyunchul Lee0cdd3192018-01-31 11:36:57 +09002608/* This returns write hints for each segment type. This hints will be
2609 * passed down to block layer. There are mapping tables which depend on
2610 * the mount option 'whint_mode'.
2611 *
2612 * 1) whint_mode=off. F2FS only passes down WRITE_LIFE_NOT_SET.
2613 *
2614 * 2) whint_mode=user-based. F2FS tries to pass down hints given by users.
2615 *
2616 * User F2FS Block
2617 * ---- ---- -----
2618 * META WRITE_LIFE_NOT_SET
2619 * HOT_NODE "
2620 * WARM_NODE "
2621 * COLD_NODE "
2622 * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME
2623 * extension list " "
2624 *
2625 * -- buffered io
2626 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
2627 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
2628 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
2629 * WRITE_LIFE_NONE " "
2630 * WRITE_LIFE_MEDIUM " "
2631 * WRITE_LIFE_LONG " "
2632 *
2633 * -- direct io
2634 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
2635 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
2636 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
2637 * WRITE_LIFE_NONE " WRITE_LIFE_NONE
2638 * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM
2639 * WRITE_LIFE_LONG " WRITE_LIFE_LONG
2640 *
Hyunchul Leef2e703f2018-01-31 11:36:58 +09002641 * 3) whint_mode=fs-based. F2FS passes down hints with its policy.
2642 *
2643 * User F2FS Block
2644 * ---- ---- -----
2645 * META WRITE_LIFE_MEDIUM;
2646 * HOT_NODE WRITE_LIFE_NOT_SET
2647 * WARM_NODE "
2648 * COLD_NODE WRITE_LIFE_NONE
2649 * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME
2650 * extension list " "
2651 *
2652 * -- buffered io
2653 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
2654 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
2655 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_LONG
2656 * WRITE_LIFE_NONE " "
2657 * WRITE_LIFE_MEDIUM " "
2658 * WRITE_LIFE_LONG " "
2659 *
2660 * -- direct io
2661 * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME
2662 * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT
2663 * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET
2664 * WRITE_LIFE_NONE " WRITE_LIFE_NONE
2665 * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM
2666 * WRITE_LIFE_LONG " WRITE_LIFE_LONG
Hyunchul Lee0cdd3192018-01-31 11:36:57 +09002667 */
2668
Chao Yu4d57b862018-05-30 00:20:41 +08002669enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi,
Hyunchul Lee0cdd3192018-01-31 11:36:57 +09002670 enum page_type type, enum temp_type temp)
2671{
Chao Yu63189b72018-03-08 14:22:56 +08002672 if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER) {
Hyunchul Lee0cdd3192018-01-31 11:36:57 +09002673 if (type == DATA) {
Hyunchul Leef2e703f2018-01-31 11:36:58 +09002674 if (temp == WARM)
Hyunchul Lee0cdd3192018-01-31 11:36:57 +09002675 return WRITE_LIFE_NOT_SET;
Hyunchul Leef2e703f2018-01-31 11:36:58 +09002676 else if (temp == HOT)
2677 return WRITE_LIFE_SHORT;
2678 else if (temp == COLD)
2679 return WRITE_LIFE_EXTREME;
Hyunchul Lee0cdd3192018-01-31 11:36:57 +09002680 } else {
2681 return WRITE_LIFE_NOT_SET;
2682 }
Chao Yu63189b72018-03-08 14:22:56 +08002683 } else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS) {
Hyunchul Leef2e703f2018-01-31 11:36:58 +09002684 if (type == DATA) {
2685 if (temp == WARM)
2686 return WRITE_LIFE_LONG;
2687 else if (temp == HOT)
2688 return WRITE_LIFE_SHORT;
2689 else if (temp == COLD)
2690 return WRITE_LIFE_EXTREME;
2691 } else if (type == NODE) {
2692 if (temp == WARM || temp == HOT)
2693 return WRITE_LIFE_NOT_SET;
2694 else if (temp == COLD)
2695 return WRITE_LIFE_NONE;
2696 } else if (type == META) {
2697 return WRITE_LIFE_MEDIUM;
2698 }
Hyunchul Lee0cdd3192018-01-31 11:36:57 +09002699 }
Hyunchul Leef2e703f2018-01-31 11:36:58 +09002700 return WRITE_LIFE_NOT_SET;
Hyunchul Lee0cdd3192018-01-31 11:36:57 +09002701}
2702
Jaegeuk Kim81377bd2017-05-10 14:19:54 -07002703static int __get_segment_type_2(struct f2fs_io_info *fio)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002704{
Jaegeuk Kim81377bd2017-05-10 14:19:54 -07002705 if (fio->type == DATA)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002706 return CURSEG_HOT_DATA;
2707 else
2708 return CURSEG_HOT_NODE;
2709}
2710
Jaegeuk Kim81377bd2017-05-10 14:19:54 -07002711static int __get_segment_type_4(struct f2fs_io_info *fio)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002712{
Jaegeuk Kim81377bd2017-05-10 14:19:54 -07002713 if (fio->type == DATA) {
2714 struct inode *inode = fio->page->mapping->host;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002715
2716 if (S_ISDIR(inode->i_mode))
2717 return CURSEG_HOT_DATA;
2718 else
2719 return CURSEG_COLD_DATA;
2720 } else {
Jaegeuk Kim81377bd2017-05-10 14:19:54 -07002721 if (IS_DNODE(fio->page) && is_cold_node(fio->page))
Jaegeuk Kima344b9f2014-11-05 20:05:53 -08002722 return CURSEG_WARM_NODE;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002723 else
2724 return CURSEG_COLD_NODE;
2725 }
2726}
2727
Jaegeuk Kim81377bd2017-05-10 14:19:54 -07002728static int __get_segment_type_6(struct f2fs_io_info *fio)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002729{
Jaegeuk Kim81377bd2017-05-10 14:19:54 -07002730 if (fio->type == DATA) {
2731 struct inode *inode = fio->page->mapping->host;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002732
Jaegeuk Kim81377bd2017-05-10 14:19:54 -07002733 if (is_cold_data(fio->page) || file_is_cold(inode))
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002734 return CURSEG_COLD_DATA;
Chao Yub6a06cb2018-02-28 17:07:27 +08002735 if (file_is_hot(inode) ||
Chao Yub4c3ca82018-04-26 17:05:50 +08002736 is_inode_flag_set(inode, FI_HOT_DATA) ||
Chao Yu2079f112018-07-17 20:41:48 +08002737 f2fs_is_atomic_file(inode) ||
2738 f2fs_is_volatile_file(inode))
Jaegeuk Kimef095d12017-03-24 20:05:13 -04002739 return CURSEG_HOT_DATA;
Chao Yu4d57b862018-05-30 00:20:41 +08002740 return f2fs_rw_hint_to_seg_type(inode->i_write_hint);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002741 } else {
Jaegeuk Kim81377bd2017-05-10 14:19:54 -07002742 if (IS_DNODE(fio->page))
2743 return is_cold_node(fio->page) ? CURSEG_WARM_NODE :
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002744 CURSEG_HOT_NODE;
Jaegeuk Kimef095d12017-03-24 20:05:13 -04002745 return CURSEG_COLD_NODE;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002746 }
2747}
2748
Jaegeuk Kim81377bd2017-05-10 14:19:54 -07002749static int __get_segment_type(struct f2fs_io_info *fio)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002750{
Jaegeuk Kima912b542017-05-10 11:18:25 -07002751 int type = 0;
2752
Chao Yu63189b72018-03-08 14:22:56 +08002753 switch (F2FS_OPTION(fio->sbi).active_logs) {
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002754 case 2:
Jaegeuk Kima912b542017-05-10 11:18:25 -07002755 type = __get_segment_type_2(fio);
2756 break;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002757 case 4:
Jaegeuk Kima912b542017-05-10 11:18:25 -07002758 type = __get_segment_type_4(fio);
2759 break;
2760 case 6:
2761 type = __get_segment_type_6(fio);
2762 break;
2763 default:
2764 f2fs_bug_on(fio->sbi, true);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002765 }
Jaegeuk Kim81377bd2017-05-10 14:19:54 -07002766
Jaegeuk Kima912b542017-05-10 11:18:25 -07002767 if (IS_HOT(type))
2768 fio->temp = HOT;
2769 else if (IS_WARM(type))
2770 fio->temp = WARM;
2771 else
2772 fio->temp = COLD;
2773 return type;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002774}
2775
Chao Yu4d57b862018-05-30 00:20:41 +08002776void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09002777 block_t old_blkaddr, block_t *new_blkaddr,
Chao Yufb830fc2017-05-19 23:37:01 +08002778 struct f2fs_summary *sum, int type,
2779 struct f2fs_io_info *fio, bool add_list)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002780{
2781 struct sit_info *sit_i = SIT_I(sbi);
Jaegeuk Kim6ae1be12016-11-11 12:31:40 -08002782 struct curseg_info *curseg = CURSEG_I(sbi, type);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002783
Chao Yu2b603112017-11-02 20:41:03 +08002784 down_read(&SM_I(sbi)->curseg_lock);
2785
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002786 mutex_lock(&curseg->curseg_mutex);
Chao Yu3d26fa62017-10-30 17:49:53 +08002787 down_write(&sit_i->sentry_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002788
2789 *new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002790
Jaegeuk Kim4e6a8d92016-12-29 14:07:53 -08002791 f2fs_wait_discard_bio(sbi, *new_blkaddr);
2792
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002793 /*
2794 * __add_sum_entry should be resided under the curseg_mutex
2795 * because, this function updates a summary entry in the
2796 * current summary block.
2797 */
Haicheng Lie79efe32013-06-13 16:59:27 +08002798 __add_sum_entry(sbi, type, sum);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002799
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002800 __refresh_next_blkoff(sbi, curseg);
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002801
2802 stat_inc_block_count(sbi, curseg);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002803
Yunlong Song65f1b802017-10-30 09:33:41 +08002804 /*
2805 * SIT information should be updated before segment allocation,
2806 * since SSR needs latest valid block information.
2807 */
2808 update_sit_entry(sbi, *new_blkaddr, 1);
2809 if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO)
2810 update_sit_entry(sbi, old_blkaddr, -1);
2811
Yunlong Song3436c4b2017-02-21 16:59:26 +08002812 if (!__has_curseg_space(sbi, type))
2813 sit_i->s_ops->allocate_segment(sbi, type, false);
Yunlong Song65f1b802017-10-30 09:33:41 +08002814
Jaegeuk Kimc6f82fe92017-04-04 16:45:30 -07002815 /*
Yunlong Song65f1b802017-10-30 09:33:41 +08002816 * segment dirty status should be updated after segment allocation,
2817 * so we just need to update status only one time after previous
2818 * segment being closed.
Jaegeuk Kimc6f82fe92017-04-04 16:45:30 -07002819 */
Yunlong Song65f1b802017-10-30 09:33:41 +08002820 locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr));
2821 locate_dirty_segment(sbi, GET_SEGNO(sbi, *new_blkaddr));
Yunlong Song3436c4b2017-02-21 16:59:26 +08002822
Chao Yu3d26fa62017-10-30 17:49:53 +08002823 up_write(&sit_i->sentry_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002824
Chao Yu704956e2017-07-31 20:19:09 +08002825 if (page && IS_NODESEG(type)) {
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002826 fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg));
2827
Chao Yu704956e2017-07-31 20:19:09 +08002828 f2fs_inode_chksum_set(sbi, page);
2829 }
2830
Chao Yufb830fc2017-05-19 23:37:01 +08002831 if (add_list) {
2832 struct f2fs_bio_info *io;
2833
2834 INIT_LIST_HEAD(&fio->list);
2835 fio->in_list = true;
Chao Yufe16efe2018-05-28 23:47:18 +08002836 fio->retry = false;
Chao Yufb830fc2017-05-19 23:37:01 +08002837 io = sbi->write_io[fio->type] + fio->temp;
2838 spin_lock(&io->io_lock);
2839 list_add_tail(&fio->list, &io->io_list);
2840 spin_unlock(&io->io_lock);
2841 }
2842
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09002843 mutex_unlock(&curseg->curseg_mutex);
Chao Yu2b603112017-11-02 20:41:03 +08002844
2845 up_read(&SM_I(sbi)->curseg_lock);
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09002846}
2847
Chao Yu39d787b2017-09-29 13:59:38 +08002848static void update_device_state(struct f2fs_io_info *fio)
2849{
2850 struct f2fs_sb_info *sbi = fio->sbi;
2851 unsigned int devidx;
2852
2853 if (!sbi->s_ndevs)
2854 return;
2855
2856 devidx = f2fs_target_device_index(sbi, fio->new_blkaddr);
2857
2858 /* update device state for fsync */
Chao Yu4d57b862018-05-30 00:20:41 +08002859 f2fs_set_dirty_device(sbi, fio->ino, devidx, FLUSH_INO);
Chao Yu1228b482017-09-29 13:59:39 +08002860
2861 /* update device state for checkpoint */
2862 if (!f2fs_test_bit(devidx, (char *)&sbi->dirty_device)) {
2863 spin_lock(&sbi->dev_lock);
2864 f2fs_set_bit(devidx, (char *)&sbi->dirty_device);
2865 spin_unlock(&sbi->dev_lock);
2866 }
Chao Yu39d787b2017-09-29 13:59:38 +08002867}
2868
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07002869static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio)
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09002870{
Jaegeuk Kim81377bd2017-05-10 14:19:54 -07002871 int type = __get_segment_type(fio);
Chao Yu107a8052018-05-26 09:00:13 +08002872 bool keep_order = (test_opt(fio->sbi, LFS) && type == CURSEG_COLD_DATA);
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09002873
Chao Yu107a8052018-05-26 09:00:13 +08002874 if (keep_order)
2875 down_read(&fio->sbi->io_order_lock);
Jaegeuk Kim0a595eb2016-12-14 10:12:56 -08002876reallocate:
Chao Yu4d57b862018-05-30 00:20:41 +08002877 f2fs_allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr,
Chao Yufb830fc2017-05-19 23:37:01 +08002878 &fio->new_blkaddr, sum, type, fio, true);
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09002879
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002880 /* writeout dirty page into bdev */
Chao Yufe16efe2018-05-28 23:47:18 +08002881 f2fs_submit_page_write(fio);
2882 if (fio->retry) {
Jaegeuk Kim0a595eb2016-12-14 10:12:56 -08002883 fio->old_blkaddr = fio->new_blkaddr;
2884 goto reallocate;
2885 }
Chao Yufe16efe2018-05-28 23:47:18 +08002886
2887 update_device_state(fio);
2888
Chao Yu107a8052018-05-26 09:00:13 +08002889 if (keep_order)
2890 up_read(&fio->sbi->io_order_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002891}
2892
Chao Yu4d57b862018-05-30 00:20:41 +08002893void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
Chao Yub0af6d42017-08-02 23:21:48 +08002894 enum iostat_type io_type)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002895{
Jaegeuk Kim458e6192013-12-11 13:54:01 +09002896 struct f2fs_io_info fio = {
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07002897 .sbi = sbi,
Jaegeuk Kim458e6192013-12-11 13:54:01 +09002898 .type = META,
Hyunchul Lee0cdd3192018-01-31 11:36:57 +09002899 .temp = HOT,
Mike Christie04d328d2016-06-05 14:31:55 -05002900 .op = REQ_OP_WRITE,
Christoph Hellwig70fd7612016-11-01 07:40:10 -06002901 .op_flags = REQ_SYNC | REQ_META | REQ_PRIO,
Chao Yu7a9d7542016-02-22 18:36:38 +08002902 .old_blkaddr = page->index,
2903 .new_blkaddr = page->index,
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07002904 .page = page,
Jaegeuk Kim4375a332015-04-23 12:04:33 -07002905 .encrypted_page = NULL,
Chao Yufb830fc2017-05-19 23:37:01 +08002906 .in_list = false,
Jaegeuk Kim458e6192013-12-11 13:54:01 +09002907 };
2908
Chao Yu2b947002015-10-12 17:04:21 +08002909 if (unlikely(page->index >= MAIN_BLKADDR(sbi)))
Mike Christie04d328d2016-06-05 14:31:55 -05002910 fio.op_flags &= ~REQ_META;
Chao Yu2b947002015-10-12 17:04:21 +08002911
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002912 set_page_writeback(page);
Jaegeuk Kim17c50032018-04-11 23:09:04 -07002913 ClearPageError(page);
Jaegeuk Kimb9109b02017-05-10 11:28:38 -07002914 f2fs_submit_page_write(&fio);
Chao Yub0af6d42017-08-02 23:21:48 +08002915
2916 f2fs_update_iostat(sbi, io_type, F2FS_BLKSIZE);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002917}
2918
Chao Yu4d57b862018-05-30 00:20:41 +08002919void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002920{
2921 struct f2fs_summary sum;
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07002922
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002923 set_summary(&sum, nid, 0, 0);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07002924 do_write_page(&sum, fio);
Chao Yub0af6d42017-08-02 23:21:48 +08002925
2926 f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002927}
2928
Chao Yu4d57b862018-05-30 00:20:41 +08002929void f2fs_outplace_write_data(struct dnode_of_data *dn,
2930 struct f2fs_io_info *fio)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002931{
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07002932 struct f2fs_sb_info *sbi = fio->sbi;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002933 struct f2fs_summary sum;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002934
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07002935 f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR);
Chao Yu77357302018-07-17 00:02:17 +08002936 set_summary(&sum, dn->nid, dn->ofs_in_node, fio->version);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07002937 do_write_page(&sum, fio);
Chao Yuf28b3432016-02-24 17:16:47 +08002938 f2fs_update_data_blkaddr(dn, fio->new_blkaddr);
Chao Yub0af6d42017-08-02 23:21:48 +08002939
2940 f2fs_update_iostat(sbi, fio->io_type, F2FS_BLKSIZE);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002941}
2942
Chao Yu4d57b862018-05-30 00:20:41 +08002943int f2fs_inplace_write_data(struct f2fs_io_info *fio)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002944{
Chao Yub0af6d42017-08-02 23:21:48 +08002945 int err;
Yunlei Hed21b0f22018-03-26 17:32:23 +08002946 struct f2fs_sb_info *sbi = fio->sbi;
Chao Yub0af6d42017-08-02 23:21:48 +08002947
Chao Yu7a9d7542016-02-22 18:36:38 +08002948 fio->new_blkaddr = fio->old_blkaddr;
Hyunchul Lee0cdd3192018-01-31 11:36:57 +09002949 /* i/o temperature is needed for passing down write hints */
2950 __get_segment_type(fio);
Yunlei Hed21b0f22018-03-26 17:32:23 +08002951
2952 f2fs_bug_on(sbi, !IS_DATASEG(get_seg_entry(sbi,
2953 GET_SEGNO(sbi, fio->new_blkaddr))->type));
2954
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07002955 stat_inc_inplace_blocks(fio->sbi);
Chao Yub0af6d42017-08-02 23:21:48 +08002956
2957 err = f2fs_submit_page_bio(fio);
Chao Yu39d787b2017-09-29 13:59:38 +08002958 if (!err)
2959 update_device_state(fio);
Chao Yub0af6d42017-08-02 23:21:48 +08002960
2961 f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE);
2962
2963 return err;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002964}
2965
Chao Yu2b603112017-11-02 20:41:03 +08002966static inline int __f2fs_get_curseg(struct f2fs_sb_info *sbi,
2967 unsigned int segno)
2968{
2969 int i;
2970
2971 for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) {
2972 if (CURSEG_I(sbi, i)->segno == segno)
2973 break;
2974 }
2975 return i;
2976}
2977
Chao Yu4d57b862018-05-30 00:20:41 +08002978void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
Chao Yu19f106b2015-05-06 13:08:06 +08002979 block_t old_blkaddr, block_t new_blkaddr,
Chao Yu28bc1062016-02-06 14:40:34 +08002980 bool recover_curseg, bool recover_newaddr)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002981{
2982 struct sit_info *sit_i = SIT_I(sbi);
2983 struct curseg_info *curseg;
2984 unsigned int segno, old_cursegno;
2985 struct seg_entry *se;
2986 int type;
Chao Yu19f106b2015-05-06 13:08:06 +08002987 unsigned short old_blkoff;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09002988
2989 segno = GET_SEGNO(sbi, new_blkaddr);
2990 se = get_seg_entry(sbi, segno);
2991 type = se->type;
2992
Chao Yu2b603112017-11-02 20:41:03 +08002993 down_write(&SM_I(sbi)->curseg_lock);
2994
Chao Yu19f106b2015-05-06 13:08:06 +08002995 if (!recover_curseg) {
2996 /* for recovery flow */
2997 if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) {
2998 if (old_blkaddr == NULL_ADDR)
2999 type = CURSEG_COLD_DATA;
3000 else
3001 type = CURSEG_WARM_DATA;
3002 }
3003 } else {
Chao Yu2b603112017-11-02 20:41:03 +08003004 if (IS_CURSEG(sbi, segno)) {
3005 /* se->type is volatile as SSR allocation */
3006 type = __f2fs_get_curseg(sbi, segno);
3007 f2fs_bug_on(sbi, type == NO_CHECK_TYPE);
3008 } else {
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003009 type = CURSEG_WARM_DATA;
Chao Yu2b603112017-11-02 20:41:03 +08003010 }
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003011 }
Chao Yu19f106b2015-05-06 13:08:06 +08003012
Yunlong Song2c190502018-01-04 15:02:02 +08003013 f2fs_bug_on(sbi, !IS_DATASEG(type));
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003014 curseg = CURSEG_I(sbi, type);
3015
3016 mutex_lock(&curseg->curseg_mutex);
Chao Yu3d26fa62017-10-30 17:49:53 +08003017 down_write(&sit_i->sentry_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003018
3019 old_cursegno = curseg->segno;
Chao Yu19f106b2015-05-06 13:08:06 +08003020 old_blkoff = curseg->next_blkoff;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003021
3022 /* change the current segment */
3023 if (segno != curseg->segno) {
3024 curseg->next_segno = segno;
Chao Yu025d63a2017-08-30 18:04:48 +08003025 change_curseg(sbi, type);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003026 }
3027
Jaegeuk Kim491c0852014-02-04 13:01:10 +09003028 curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr);
Haicheng Lie79efe32013-06-13 16:59:27 +08003029 __add_sum_entry(sbi, type, sum);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003030
Chao Yu28bc1062016-02-06 14:40:34 +08003031 if (!recover_curseg || recover_newaddr)
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07003032 update_sit_entry(sbi, new_blkaddr, 1);
3033 if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO)
3034 update_sit_entry(sbi, old_blkaddr, -1);
3035
3036 locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr));
3037 locate_dirty_segment(sbi, GET_SEGNO(sbi, new_blkaddr));
3038
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003039 locate_dirty_segment(sbi, old_cursegno);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003040
Chao Yu19f106b2015-05-06 13:08:06 +08003041 if (recover_curseg) {
3042 if (old_cursegno != curseg->segno) {
3043 curseg->next_segno = old_cursegno;
Chao Yu025d63a2017-08-30 18:04:48 +08003044 change_curseg(sbi, type);
Chao Yu19f106b2015-05-06 13:08:06 +08003045 }
3046 curseg->next_blkoff = old_blkoff;
3047 }
3048
Chao Yu3d26fa62017-10-30 17:49:53 +08003049 up_write(&sit_i->sentry_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003050 mutex_unlock(&curseg->curseg_mutex);
Chao Yu2b603112017-11-02 20:41:03 +08003051 up_write(&SM_I(sbi)->curseg_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003052}
3053
Chao Yu528e3452015-05-28 19:15:35 +08003054void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
3055 block_t old_addr, block_t new_addr,
Chao Yu28bc1062016-02-06 14:40:34 +08003056 unsigned char version, bool recover_curseg,
3057 bool recover_newaddr)
Chao Yu528e3452015-05-28 19:15:35 +08003058{
3059 struct f2fs_summary sum;
3060
3061 set_summary(&sum, dn->nid, dn->ofs_in_node, version);
3062
Chao Yu4d57b862018-05-30 00:20:41 +08003063 f2fs_do_replace_block(sbi, &sum, old_addr, new_addr,
Chao Yu28bc1062016-02-06 14:40:34 +08003064 recover_curseg, recover_newaddr);
Chao Yu528e3452015-05-28 19:15:35 +08003065
Chao Yuf28b3432016-02-24 17:16:47 +08003066 f2fs_update_data_blkaddr(dn, new_addr);
Chao Yu528e3452015-05-28 19:15:35 +08003067}
3068
Jaegeuk Kim93dfe2a2013-11-30 12:51:14 +09003069void f2fs_wait_on_page_writeback(struct page *page,
Jaegeuk Kimfec1d652016-01-20 23:43:51 +08003070 enum page_type type, bool ordered)
Jaegeuk Kim93dfe2a2013-11-30 12:51:14 +09003071{
Jaegeuk Kim93dfe2a2013-11-30 12:51:14 +09003072 if (PageWriteback(page)) {
Jaegeuk Kim40813632014-09-02 15:31:18 -07003073 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
3074
Jaegeuk Kimb9109b02017-05-10 11:28:38 -07003075 f2fs_submit_merged_write_cond(sbi, page->mapping->host,
3076 0, page->index, type);
Jaegeuk Kimfec1d652016-01-20 23:43:51 +08003077 if (ordered)
3078 wait_on_page_writeback(page);
3079 else
3080 wait_for_stable_page(page);
Jaegeuk Kim93dfe2a2013-11-30 12:51:14 +09003081 }
3082}
3083
Jaegeuk Kimd4c759e2017-09-05 17:04:35 -07003084void f2fs_wait_on_block_writeback(struct f2fs_sb_info *sbi, block_t blkaddr)
Chao Yu08b39fb2015-10-08 13:27:34 +08003085{
3086 struct page *cpage;
3087
Chao Yue1da7872018-06-05 17:44:11 +08003088 if (!is_valid_data_blkaddr(sbi, blkaddr))
Chao Yu08b39fb2015-10-08 13:27:34 +08003089 return;
3090
Chao Yu08b39fb2015-10-08 13:27:34 +08003091 cpage = find_lock_page(META_MAPPING(sbi), blkaddr);
3092 if (cpage) {
Jaegeuk Kimfec1d652016-01-20 23:43:51 +08003093 f2fs_wait_on_page_writeback(cpage, DATA, true);
Chao Yu08b39fb2015-10-08 13:27:34 +08003094 f2fs_put_page(cpage, 1);
3095 }
3096}
3097
Chao Yu77357302018-07-17 00:02:17 +08003098static int read_compacted_summaries(struct f2fs_sb_info *sbi)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003099{
3100 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3101 struct curseg_info *seg_i;
3102 unsigned char *kaddr;
3103 struct page *page;
3104 block_t start;
3105 int i, j, offset;
3106
3107 start = start_sum_block(sbi);
3108
Chao Yu4d57b862018-05-30 00:20:41 +08003109 page = f2fs_get_meta_page(sbi, start++);
Chao Yu77357302018-07-17 00:02:17 +08003110 if (IS_ERR(page))
3111 return PTR_ERR(page);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003112 kaddr = (unsigned char *)page_address(page);
3113
3114 /* Step 1: restore nat cache */
3115 seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA);
Chao Yub7ad7512016-02-19 18:08:46 +08003116 memcpy(seg_i->journal, kaddr, SUM_JOURNAL_SIZE);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003117
3118 /* Step 2: restore sit cache */
3119 seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA);
Chao Yub7ad7512016-02-19 18:08:46 +08003120 memcpy(seg_i->journal, kaddr + SUM_JOURNAL_SIZE, SUM_JOURNAL_SIZE);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003121 offset = 2 * SUM_JOURNAL_SIZE;
3122
3123 /* Step 3: restore summary entries */
3124 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
3125 unsigned short blk_off;
3126 unsigned int segno;
3127
3128 seg_i = CURSEG_I(sbi, i);
3129 segno = le32_to_cpu(ckpt->cur_data_segno[i]);
3130 blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]);
3131 seg_i->next_segno = segno;
3132 reset_curseg(sbi, i, 0);
3133 seg_i->alloc_type = ckpt->alloc_type[i];
3134 seg_i->next_blkoff = blk_off;
3135
3136 if (seg_i->alloc_type == SSR)
3137 blk_off = sbi->blocks_per_seg;
3138
3139 for (j = 0; j < blk_off; j++) {
3140 struct f2fs_summary *s;
3141 s = (struct f2fs_summary *)(kaddr + offset);
3142 seg_i->sum_blk->entries[j] = *s;
3143 offset += SUMMARY_SIZE;
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03003144 if (offset + SUMMARY_SIZE <= PAGE_SIZE -
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003145 SUM_FOOTER_SIZE)
3146 continue;
3147
3148 f2fs_put_page(page, 1);
3149 page = NULL;
3150
Chao Yu4d57b862018-05-30 00:20:41 +08003151 page = f2fs_get_meta_page(sbi, start++);
Chao Yu77357302018-07-17 00:02:17 +08003152 if (IS_ERR(page))
3153 return PTR_ERR(page);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003154 kaddr = (unsigned char *)page_address(page);
3155 offset = 0;
3156 }
3157 }
3158 f2fs_put_page(page, 1);
Chao Yu77357302018-07-17 00:02:17 +08003159 return 0;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003160}
3161
3162static int read_normal_summaries(struct f2fs_sb_info *sbi, int type)
3163{
3164 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3165 struct f2fs_summary_block *sum;
3166 struct curseg_info *curseg;
3167 struct page *new;
3168 unsigned short blk_off;
3169 unsigned int segno = 0;
3170 block_t blk_addr = 0;
Chao Yu77357302018-07-17 00:02:17 +08003171 int err = 0;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003172
3173 /* get segment number and block addr */
3174 if (IS_DATASEG(type)) {
3175 segno = le32_to_cpu(ckpt->cur_data_segno[type]);
3176 blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type -
3177 CURSEG_HOT_DATA]);
Jaegeuk Kim119ee912015-01-29 11:45:33 -08003178 if (__exist_node_summaries(sbi))
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003179 blk_addr = sum_blk_addr(sbi, NR_CURSEG_TYPE, type);
3180 else
3181 blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type);
3182 } else {
3183 segno = le32_to_cpu(ckpt->cur_node_segno[type -
3184 CURSEG_HOT_NODE]);
3185 blk_off = le16_to_cpu(ckpt->cur_node_blkoff[type -
3186 CURSEG_HOT_NODE]);
Jaegeuk Kim119ee912015-01-29 11:45:33 -08003187 if (__exist_node_summaries(sbi))
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003188 blk_addr = sum_blk_addr(sbi, NR_CURSEG_NODE_TYPE,
3189 type - CURSEG_HOT_NODE);
3190 else
3191 blk_addr = GET_SUM_BLOCK(sbi, segno);
3192 }
3193
Chao Yu4d57b862018-05-30 00:20:41 +08003194 new = f2fs_get_meta_page(sbi, blk_addr);
Chao Yu77357302018-07-17 00:02:17 +08003195 if (IS_ERR(new))
3196 return PTR_ERR(new);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003197 sum = (struct f2fs_summary_block *)page_address(new);
3198
3199 if (IS_NODESEG(type)) {
Jaegeuk Kim119ee912015-01-29 11:45:33 -08003200 if (__exist_node_summaries(sbi)) {
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003201 struct f2fs_summary *ns = &sum->entries[0];
3202 int i;
3203 for (i = 0; i < sbi->blocks_per_seg; i++, ns++) {
3204 ns->version = 0;
3205 ns->ofs_in_node = 0;
3206 }
3207 } else {
Chao Yu77357302018-07-17 00:02:17 +08003208 err = f2fs_restore_node_summary(sbi, segno, sum);
3209 if (err)
3210 goto out;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003211 }
3212 }
3213
3214 /* set uncompleted segment to curseg */
3215 curseg = CURSEG_I(sbi, type);
3216 mutex_lock(&curseg->curseg_mutex);
Chao Yub7ad7512016-02-19 18:08:46 +08003217
3218 /* update journal info */
3219 down_write(&curseg->journal_rwsem);
3220 memcpy(curseg->journal, &sum->journal, SUM_JOURNAL_SIZE);
3221 up_write(&curseg->journal_rwsem);
3222
3223 memcpy(curseg->sum_blk->entries, sum->entries, SUM_ENTRY_SIZE);
3224 memcpy(&curseg->sum_blk->footer, &sum->footer, SUM_FOOTER_SIZE);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003225 curseg->next_segno = segno;
3226 reset_curseg(sbi, type, 0);
3227 curseg->alloc_type = ckpt->alloc_type[type];
3228 curseg->next_blkoff = blk_off;
3229 mutex_unlock(&curseg->curseg_mutex);
Chao Yu77357302018-07-17 00:02:17 +08003230out:
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003231 f2fs_put_page(new, 1);
Chao Yu77357302018-07-17 00:02:17 +08003232 return err;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003233}
3234
3235static int restore_curseg_summaries(struct f2fs_sb_info *sbi)
3236{
Jin Qian21d3f8e2017-06-01 11:18:30 -07003237 struct f2fs_journal *sit_j = CURSEG_I(sbi, CURSEG_COLD_DATA)->journal;
3238 struct f2fs_journal *nat_j = CURSEG_I(sbi, CURSEG_HOT_DATA)->journal;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003239 int type = CURSEG_HOT_DATA;
Chao Yue4fc5fb2014-03-17 16:36:24 +08003240 int err;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003241
Chao Yuaaec2b12016-09-20 11:04:18 +08003242 if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) {
Chao Yu4d57b862018-05-30 00:20:41 +08003243 int npages = f2fs_npages_for_summary_flush(sbi, true);
Chao Yu3fa06d72014-12-09 14:21:46 +08003244
3245 if (npages >= 2)
Chao Yu4d57b862018-05-30 00:20:41 +08003246 f2fs_ra_meta_pages(sbi, start_sum_block(sbi), npages,
Chao Yu26879fb2015-10-12 17:05:59 +08003247 META_CP, true);
Chao Yu3fa06d72014-12-09 14:21:46 +08003248
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003249 /* restore for compacted data summary */
Chao Yu77357302018-07-17 00:02:17 +08003250 err = read_compacted_summaries(sbi);
3251 if (err)
3252 return err;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003253 type = CURSEG_HOT_NODE;
3254 }
3255
Jaegeuk Kim119ee912015-01-29 11:45:33 -08003256 if (__exist_node_summaries(sbi))
Chao Yu4d57b862018-05-30 00:20:41 +08003257 f2fs_ra_meta_pages(sbi, sum_blk_addr(sbi, NR_CURSEG_TYPE, type),
Chao Yu26879fb2015-10-12 17:05:59 +08003258 NR_CURSEG_TYPE - type, META_CP, true);
Chao Yu3fa06d72014-12-09 14:21:46 +08003259
Chao Yue4fc5fb2014-03-17 16:36:24 +08003260 for (; type <= CURSEG_COLD_NODE; type++) {
3261 err = read_normal_summaries(sbi, type);
3262 if (err)
3263 return err;
3264 }
3265
Jin Qian21d3f8e2017-06-01 11:18:30 -07003266 /* sanity check for summary blocks */
3267 if (nats_in_cursum(nat_j) > NAT_JOURNAL_ENTRIES ||
3268 sits_in_cursum(sit_j) > SIT_JOURNAL_ENTRIES)
3269 return -EINVAL;
3270
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003271 return 0;
3272}
3273
3274static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr)
3275{
3276 struct page *page;
3277 unsigned char *kaddr;
3278 struct f2fs_summary *summary;
3279 struct curseg_info *seg_i;
3280 int written_size = 0;
3281 int i, j;
3282
Chao Yu4d57b862018-05-30 00:20:41 +08003283 page = f2fs_grab_meta_page(sbi, blkaddr++);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003284 kaddr = (unsigned char *)page_address(page);
Chao Yu81114ba2018-04-09 20:25:06 +08003285 memset(kaddr, 0, PAGE_SIZE);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003286
3287 /* Step 1: write nat cache */
3288 seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA);
Chao Yub7ad7512016-02-19 18:08:46 +08003289 memcpy(kaddr, seg_i->journal, SUM_JOURNAL_SIZE);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003290 written_size += SUM_JOURNAL_SIZE;
3291
3292 /* Step 2: write sit cache */
3293 seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA);
Chao Yub7ad7512016-02-19 18:08:46 +08003294 memcpy(kaddr + written_size, seg_i->journal, SUM_JOURNAL_SIZE);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003295 written_size += SUM_JOURNAL_SIZE;
3296
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003297 /* Step 3: write summary entries */
3298 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) {
3299 unsigned short blkoff;
3300 seg_i = CURSEG_I(sbi, i);
3301 if (sbi->ckpt->alloc_type[i] == SSR)
3302 blkoff = sbi->blocks_per_seg;
3303 else
3304 blkoff = curseg_blkoff(sbi, i);
3305
3306 for (j = 0; j < blkoff; j++) {
3307 if (!page) {
Chao Yu4d57b862018-05-30 00:20:41 +08003308 page = f2fs_grab_meta_page(sbi, blkaddr++);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003309 kaddr = (unsigned char *)page_address(page);
Chao Yu81114ba2018-04-09 20:25:06 +08003310 memset(kaddr, 0, PAGE_SIZE);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003311 written_size = 0;
3312 }
3313 summary = (struct f2fs_summary *)(kaddr + written_size);
3314 *summary = seg_i->sum_blk->entries[j];
3315 written_size += SUMMARY_SIZE;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003316
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03003317 if (written_size + SUMMARY_SIZE <= PAGE_SIZE -
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003318 SUM_FOOTER_SIZE)
3319 continue;
3320
Chao Yue8d61a72013-10-24 15:08:28 +08003321 set_page_dirty(page);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003322 f2fs_put_page(page, 1);
3323 page = NULL;
3324 }
3325 }
Chao Yue8d61a72013-10-24 15:08:28 +08003326 if (page) {
3327 set_page_dirty(page);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003328 f2fs_put_page(page, 1);
Chao Yue8d61a72013-10-24 15:08:28 +08003329 }
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003330}
3331
3332static void write_normal_summaries(struct f2fs_sb_info *sbi,
3333 block_t blkaddr, int type)
3334{
3335 int i, end;
3336 if (IS_DATASEG(type))
3337 end = type + NR_CURSEG_DATA_TYPE;
3338 else
3339 end = type + NR_CURSEG_NODE_TYPE;
3340
Chao Yub7ad7512016-02-19 18:08:46 +08003341 for (i = type; i < end; i++)
3342 write_current_sum_page(sbi, i, blkaddr + (i - type));
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003343}
3344
Chao Yu4d57b862018-05-30 00:20:41 +08003345void f2fs_write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003346{
Chao Yuaaec2b12016-09-20 11:04:18 +08003347 if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG))
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003348 write_compacted_summaries(sbi, start_blk);
3349 else
3350 write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA);
3351}
3352
Chao Yu4d57b862018-05-30 00:20:41 +08003353void f2fs_write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003354{
Jaegeuk Kim119ee912015-01-29 11:45:33 -08003355 write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003356}
3357
Chao Yu4d57b862018-05-30 00:20:41 +08003358int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003359 unsigned int val, int alloc)
3360{
3361 int i;
3362
3363 if (type == NAT_JOURNAL) {
Chao Yudfc08a12016-02-14 18:50:40 +08003364 for (i = 0; i < nats_in_cursum(journal); i++) {
3365 if (le32_to_cpu(nid_in_journal(journal, i)) == val)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003366 return i;
3367 }
Chao Yudfc08a12016-02-14 18:50:40 +08003368 if (alloc && __has_cursum_space(journal, 1, NAT_JOURNAL))
3369 return update_nats_in_cursum(journal, 1);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003370 } else if (type == SIT_JOURNAL) {
Chao Yudfc08a12016-02-14 18:50:40 +08003371 for (i = 0; i < sits_in_cursum(journal); i++)
3372 if (le32_to_cpu(segno_in_journal(journal, i)) == val)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003373 return i;
Chao Yudfc08a12016-02-14 18:50:40 +08003374 if (alloc && __has_cursum_space(journal, 1, SIT_JOURNAL))
3375 return update_sits_in_cursum(journal, 1);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003376 }
3377 return -1;
3378}
3379
3380static struct page *get_current_sit_page(struct f2fs_sb_info *sbi,
3381 unsigned int segno)
3382{
Chao Yu77357302018-07-17 00:02:17 +08003383 return f2fs_get_meta_page_nofail(sbi, current_sit_addr(sbi, segno));
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003384}
3385
3386static struct page *get_next_sit_page(struct f2fs_sb_info *sbi,
3387 unsigned int start)
3388{
3389 struct sit_info *sit_i = SIT_I(sbi);
Yunlei He068c3cd2018-01-25 17:27:11 +08003390 struct page *page;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003391 pgoff_t src_off, dst_off;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003392
3393 src_off = current_sit_addr(sbi, start);
3394 dst_off = next_sit_addr(sbi, src_off);
3395
Chao Yu4d57b862018-05-30 00:20:41 +08003396 page = f2fs_grab_meta_page(sbi, dst_off);
Yunlei He068c3cd2018-01-25 17:27:11 +08003397 seg_info_to_sit_page(sbi, page, start);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003398
Yunlei He068c3cd2018-01-25 17:27:11 +08003399 set_page_dirty(page);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003400 set_to_next_sit(sit_i, start);
3401
Yunlei He068c3cd2018-01-25 17:27:11 +08003402 return page;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003403}
3404
Chao Yu184a5cd2014-09-04 18:13:01 +08003405static struct sit_entry_set *grab_sit_entry_set(void)
3406{
3407 struct sit_entry_set *ses =
Jaegeuk Kim80c54502015-08-20 08:51:56 -07003408 f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_NOFS);
Chao Yu184a5cd2014-09-04 18:13:01 +08003409
3410 ses->entry_cnt = 0;
3411 INIT_LIST_HEAD(&ses->set_list);
3412 return ses;
3413}
3414
3415static void release_sit_entry_set(struct sit_entry_set *ses)
3416{
3417 list_del(&ses->set_list);
3418 kmem_cache_free(sit_entry_set_slab, ses);
3419}
3420
3421static void adjust_sit_entry_set(struct sit_entry_set *ses,
3422 struct list_head *head)
3423{
3424 struct sit_entry_set *next = ses;
3425
3426 if (list_is_last(&ses->set_list, head))
3427 return;
3428
3429 list_for_each_entry_continue(next, head, set_list)
3430 if (ses->entry_cnt <= next->entry_cnt)
3431 break;
3432
3433 list_move_tail(&ses->set_list, &next->set_list);
3434}
3435
3436static void add_sit_entry(unsigned int segno, struct list_head *head)
3437{
3438 struct sit_entry_set *ses;
3439 unsigned int start_segno = START_SEGNO(segno);
3440
3441 list_for_each_entry(ses, head, set_list) {
3442 if (ses->start_segno == start_segno) {
3443 ses->entry_cnt++;
3444 adjust_sit_entry_set(ses, head);
3445 return;
3446 }
3447 }
3448
3449 ses = grab_sit_entry_set();
3450
3451 ses->start_segno = start_segno;
3452 ses->entry_cnt++;
3453 list_add(&ses->set_list, head);
3454}
3455
3456static void add_sits_in_set(struct f2fs_sb_info *sbi)
3457{
3458 struct f2fs_sm_info *sm_info = SM_I(sbi);
3459 struct list_head *set_list = &sm_info->sit_entry_set;
3460 unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap;
Chao Yu184a5cd2014-09-04 18:13:01 +08003461 unsigned int segno;
3462
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07003463 for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi))
Chao Yu184a5cd2014-09-04 18:13:01 +08003464 add_sit_entry(segno, set_list);
3465}
3466
3467static void remove_sits_in_journal(struct f2fs_sb_info *sbi)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003468{
3469 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
Chao Yub7ad7512016-02-19 18:08:46 +08003470 struct f2fs_journal *journal = curseg->journal;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003471 int i;
3472
Chao Yub7ad7512016-02-19 18:08:46 +08003473 down_write(&curseg->journal_rwsem);
Chao Yudfc08a12016-02-14 18:50:40 +08003474 for (i = 0; i < sits_in_cursum(journal); i++) {
Chao Yu184a5cd2014-09-04 18:13:01 +08003475 unsigned int segno;
3476 bool dirtied;
3477
Chao Yudfc08a12016-02-14 18:50:40 +08003478 segno = le32_to_cpu(segno_in_journal(journal, i));
Chao Yu184a5cd2014-09-04 18:13:01 +08003479 dirtied = __mark_sit_entry_dirty(sbi, segno);
3480
3481 if (!dirtied)
3482 add_sit_entry(segno, &SM_I(sbi)->sit_entry_set);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003483 }
Chao Yudfc08a12016-02-14 18:50:40 +08003484 update_sits_in_cursum(journal, -i);
Chao Yub7ad7512016-02-19 18:08:46 +08003485 up_write(&curseg->journal_rwsem);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003486}
3487
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09003488/*
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003489 * CP calls this function, which flushes SIT entries including sit_journal,
3490 * and moves prefree segs to free segs.
3491 */
Chao Yu4d57b862018-05-30 00:20:41 +08003492void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003493{
3494 struct sit_info *sit_i = SIT_I(sbi);
3495 unsigned long *bitmap = sit_i->dirty_sentries_bitmap;
3496 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
Chao Yub7ad7512016-02-19 18:08:46 +08003497 struct f2fs_journal *journal = curseg->journal;
Chao Yu184a5cd2014-09-04 18:13:01 +08003498 struct sit_entry_set *ses, *tmp;
3499 struct list_head *head = &SM_I(sbi)->sit_entry_set;
Chao Yu184a5cd2014-09-04 18:13:01 +08003500 bool to_journal = true;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07003501 struct seg_entry *se;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003502
Chao Yu3d26fa62017-10-30 17:49:53 +08003503 down_write(&sit_i->sentry_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003504
Wanpeng Li2b11a742015-02-27 16:52:50 +08003505 if (!sit_i->dirty_sentries)
3506 goto out;
3507
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003508 /*
Chao Yu184a5cd2014-09-04 18:13:01 +08003509 * add and account sit entries of dirty bitmap in sit entry
3510 * set temporarily
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003511 */
Chao Yu184a5cd2014-09-04 18:13:01 +08003512 add_sits_in_set(sbi);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003513
Chao Yu184a5cd2014-09-04 18:13:01 +08003514 /*
3515 * if there are no enough space in journal to store dirty sit
3516 * entries, remove all entries from journal and add and account
3517 * them in sit entry set.
3518 */
Chao Yudfc08a12016-02-14 18:50:40 +08003519 if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL))
Chao Yu184a5cd2014-09-04 18:13:01 +08003520 remove_sits_in_journal(sbi);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003521
Chao Yu184a5cd2014-09-04 18:13:01 +08003522 /*
3523 * there are two steps to flush sit entries:
3524 * #1, flush sit entries to journal in current cold data summary block.
3525 * #2, flush sit entries to sit page.
3526 */
3527 list_for_each_entry_safe(ses, tmp, head, set_list) {
Jaegeuk Kim4a257ed2014-10-16 11:43:30 -07003528 struct page *page = NULL;
Chao Yu184a5cd2014-09-04 18:13:01 +08003529 struct f2fs_sit_block *raw_sit = NULL;
3530 unsigned int start_segno = ses->start_segno;
3531 unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK,
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07003532 (unsigned long)MAIN_SEGS(sbi));
Chao Yu184a5cd2014-09-04 18:13:01 +08003533 unsigned int segno = start_segno;
Jaegeuk Kimb2955552013-11-12 14:49:56 +09003534
Chao Yu184a5cd2014-09-04 18:13:01 +08003535 if (to_journal &&
Chao Yudfc08a12016-02-14 18:50:40 +08003536 !__has_cursum_space(journal, ses->entry_cnt, SIT_JOURNAL))
Chao Yu184a5cd2014-09-04 18:13:01 +08003537 to_journal = false;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003538
Chao Yub7ad7512016-02-19 18:08:46 +08003539 if (to_journal) {
3540 down_write(&curseg->journal_rwsem);
3541 } else {
Chao Yu184a5cd2014-09-04 18:13:01 +08003542 page = get_next_sit_page(sbi, start_segno);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003543 raw_sit = page_address(page);
3544 }
3545
Chao Yu184a5cd2014-09-04 18:13:01 +08003546 /* flush dirty sit entries in region of current sit set */
3547 for_each_set_bit_from(segno, bitmap, end) {
3548 int offset, sit_offset;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07003549
3550 se = get_seg_entry(sbi, segno);
Zhikang Zhang56b07e72018-04-09 04:28:41 +08003551#ifdef CONFIG_F2FS_CHECK_FS
3552 if (memcmp(se->cur_valid_map, se->cur_valid_map_mir,
3553 SIT_VBLOCK_MAP_SIZE))
3554 f2fs_bug_on(sbi, 1);
3555#endif
Chao Yu184a5cd2014-09-04 18:13:01 +08003556
3557 /* add discard candidates */
Chao Yuc473f1a2017-04-27 20:40:39 +08003558 if (!(cpc->reason & CP_DISCARD)) {
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07003559 cpc->trim_start = segno;
Jaegeuk Kim25290fa2016-12-29 22:06:15 -08003560 add_discard_addrs(sbi, cpc, false);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07003561 }
Chao Yu184a5cd2014-09-04 18:13:01 +08003562
3563 if (to_journal) {
Chao Yu4d57b862018-05-30 00:20:41 +08003564 offset = f2fs_lookup_journal_in_cursum(journal,
Chao Yu184a5cd2014-09-04 18:13:01 +08003565 SIT_JOURNAL, segno, 1);
3566 f2fs_bug_on(sbi, offset < 0);
Chao Yudfc08a12016-02-14 18:50:40 +08003567 segno_in_journal(journal, offset) =
Chao Yu184a5cd2014-09-04 18:13:01 +08003568 cpu_to_le32(segno);
3569 seg_info_to_raw_sit(se,
Chao Yudfc08a12016-02-14 18:50:40 +08003570 &sit_in_journal(journal, offset));
Zhikang Zhang56b07e72018-04-09 04:28:41 +08003571 check_block_count(sbi, segno,
3572 &sit_in_journal(journal, offset));
Chao Yu184a5cd2014-09-04 18:13:01 +08003573 } else {
3574 sit_offset = SIT_ENTRY_OFFSET(sit_i, segno);
3575 seg_info_to_raw_sit(se,
3576 &raw_sit->entries[sit_offset]);
Zhikang Zhang56b07e72018-04-09 04:28:41 +08003577 check_block_count(sbi, segno,
3578 &raw_sit->entries[sit_offset]);
Chao Yu184a5cd2014-09-04 18:13:01 +08003579 }
3580
3581 __clear_bit(segno, bitmap);
3582 sit_i->dirty_sentries--;
3583 ses->entry_cnt--;
3584 }
3585
Chao Yub7ad7512016-02-19 18:08:46 +08003586 if (to_journal)
3587 up_write(&curseg->journal_rwsem);
3588 else
Chao Yu184a5cd2014-09-04 18:13:01 +08003589 f2fs_put_page(page, 1);
3590
3591 f2fs_bug_on(sbi, ses->entry_cnt);
3592 release_sit_entry_set(ses);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003593 }
Chao Yu184a5cd2014-09-04 18:13:01 +08003594
3595 f2fs_bug_on(sbi, !list_empty(head));
3596 f2fs_bug_on(sbi, sit_i->dirty_sentries);
Chao Yu184a5cd2014-09-04 18:13:01 +08003597out:
Chao Yuc473f1a2017-04-27 20:40:39 +08003598 if (cpc->reason & CP_DISCARD) {
Yunlei He650d3c42016-12-22 11:46:24 +08003599 __u64 trim_start = cpc->trim_start;
3600
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07003601 for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++)
Jaegeuk Kim25290fa2016-12-29 22:06:15 -08003602 add_discard_addrs(sbi, cpc, false);
Yunlei He650d3c42016-12-22 11:46:24 +08003603
3604 cpc->trim_start = trim_start;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07003605 }
Chao Yu3d26fa62017-10-30 17:49:53 +08003606 up_write(&sit_i->sentry_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003607
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003608 set_prefree_as_free_segments(sbi);
3609}
3610
3611static int build_sit_info(struct f2fs_sb_info *sbi)
3612{
3613 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003614 struct sit_info *sit_i;
3615 unsigned int sit_segs, start;
Chao Yuae27d622017-01-07 18:52:34 +08003616 char *src_bitmap;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003617 unsigned int bitmap_size;
3618
3619 /* allocate memory for SIT information */
Chao Yuacbf0542017-11-30 19:28:17 +08003620 sit_i = f2fs_kzalloc(sbi, sizeof(struct sit_info), GFP_KERNEL);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003621 if (!sit_i)
3622 return -ENOMEM;
3623
3624 SM_I(sbi)->sit_info = sit_i;
3625
Kees Cook9d2a7892018-06-12 14:28:35 -07003626 sit_i->sentries =
3627 f2fs_kvzalloc(sbi, array_size(sizeof(struct seg_entry),
3628 MAIN_SEGS(sbi)),
3629 GFP_KERNEL);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003630 if (!sit_i->sentries)
3631 return -ENOMEM;
3632
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07003633 bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
Chao Yu628b3d12017-11-30 19:28:18 +08003634 sit_i->dirty_sentries_bitmap = f2fs_kvzalloc(sbi, bitmap_size,
3635 GFP_KERNEL);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003636 if (!sit_i->dirty_sentries_bitmap)
3637 return -ENOMEM;
3638
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07003639 for (start = 0; start < MAIN_SEGS(sbi); start++) {
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003640 sit_i->sentries[start].cur_valid_map
Chao Yuacbf0542017-11-30 19:28:17 +08003641 = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003642 sit_i->sentries[start].ckpt_valid_map
Chao Yuacbf0542017-11-30 19:28:17 +08003643 = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL);
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07003644 if (!sit_i->sentries[start].cur_valid_map ||
Jaegeuk Kim3e025742016-08-02 10:56:40 -07003645 !sit_i->sentries[start].ckpt_valid_map)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003646 return -ENOMEM;
Jaegeuk Kim3e025742016-08-02 10:56:40 -07003647
Chao Yu355e7892017-01-07 18:51:01 +08003648#ifdef CONFIG_F2FS_CHECK_FS
3649 sit_i->sentries[start].cur_valid_map_mir
Chao Yuacbf0542017-11-30 19:28:17 +08003650 = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL);
Chao Yu355e7892017-01-07 18:51:01 +08003651 if (!sit_i->sentries[start].cur_valid_map_mir)
3652 return -ENOMEM;
3653#endif
3654
Jaegeuk Kim3e025742016-08-02 10:56:40 -07003655 if (f2fs_discard_en(sbi)) {
3656 sit_i->sentries[start].discard_map
Chao Yuacbf0542017-11-30 19:28:17 +08003657 = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE,
3658 GFP_KERNEL);
Jaegeuk Kim3e025742016-08-02 10:56:40 -07003659 if (!sit_i->sentries[start].discard_map)
3660 return -ENOMEM;
3661 }
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003662 }
3663
Chao Yuacbf0542017-11-30 19:28:17 +08003664 sit_i->tmp_map = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL);
Jaegeuk Kim60a3b782015-02-10 16:44:29 -08003665 if (!sit_i->tmp_map)
3666 return -ENOMEM;
3667
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003668 if (sbi->segs_per_sec > 1) {
Kees Cook9d2a7892018-06-12 14:28:35 -07003669 sit_i->sec_entries =
3670 f2fs_kvzalloc(sbi, array_size(sizeof(struct sec_entry),
3671 MAIN_SECS(sbi)),
3672 GFP_KERNEL);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003673 if (!sit_i->sec_entries)
3674 return -ENOMEM;
3675 }
3676
3677 /* get information related with SIT */
3678 sit_segs = le32_to_cpu(raw_super->segment_count_sit) >> 1;
3679
3680 /* setup SIT bitmap from ckeckpoint pack */
3681 bitmap_size = __bitmap_size(sbi, SIT_BITMAP);
3682 src_bitmap = __bitmap_ptr(sbi, SIT_BITMAP);
3683
Chao Yuae27d622017-01-07 18:52:34 +08003684 sit_i->sit_bitmap = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL);
3685 if (!sit_i->sit_bitmap)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003686 return -ENOMEM;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003687
Chao Yuae27d622017-01-07 18:52:34 +08003688#ifdef CONFIG_F2FS_CHECK_FS
3689 sit_i->sit_bitmap_mir = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL);
3690 if (!sit_i->sit_bitmap_mir)
3691 return -ENOMEM;
3692#endif
3693
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003694 /* init SIT information */
3695 sit_i->s_ops = &default_salloc_ops;
3696
3697 sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr);
3698 sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg;
Jaegeuk Kimc79b7ff2016-11-14 18:20:10 -08003699 sit_i->written_valid_blocks = 0;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003700 sit_i->bitmap_size = bitmap_size;
3701 sit_i->dirty_sentries = 0;
3702 sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK;
3703 sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time);
Deepa Dinamani48fbfe52017-05-08 15:59:10 -07003704 sit_i->mounted_time = ktime_get_real_seconds();
Chao Yu3d26fa62017-10-30 17:49:53 +08003705 init_rwsem(&sit_i->sentry_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003706 return 0;
3707}
3708
3709static int build_free_segmap(struct f2fs_sb_info *sbi)
3710{
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003711 struct free_segmap_info *free_i;
3712 unsigned int bitmap_size, sec_bitmap_size;
3713
3714 /* allocate memory for free segmap information */
Chao Yuacbf0542017-11-30 19:28:17 +08003715 free_i = f2fs_kzalloc(sbi, sizeof(struct free_segmap_info), GFP_KERNEL);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003716 if (!free_i)
3717 return -ENOMEM;
3718
3719 SM_I(sbi)->free_info = free_i;
3720
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07003721 bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
Chao Yu628b3d12017-11-30 19:28:18 +08003722 free_i->free_segmap = f2fs_kvmalloc(sbi, bitmap_size, GFP_KERNEL);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003723 if (!free_i->free_segmap)
3724 return -ENOMEM;
3725
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07003726 sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi));
Chao Yu628b3d12017-11-30 19:28:18 +08003727 free_i->free_secmap = f2fs_kvmalloc(sbi, sec_bitmap_size, GFP_KERNEL);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003728 if (!free_i->free_secmap)
3729 return -ENOMEM;
3730
3731 /* set all segments as dirty temporarily */
3732 memset(free_i->free_segmap, 0xff, bitmap_size);
3733 memset(free_i->free_secmap, 0xff, sec_bitmap_size);
3734
3735 /* init free segmap information */
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07003736 free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi));
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003737 free_i->free_segments = 0;
3738 free_i->free_sections = 0;
Chao Yu1a118cc2015-02-11 18:20:38 +08003739 spin_lock_init(&free_i->segmap_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003740 return 0;
3741}
3742
3743static int build_curseg(struct f2fs_sb_info *sbi)
3744{
Namjae Jeon1042d602012-12-01 10:56:13 +09003745 struct curseg_info *array;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003746 int i;
3747
Kees Cook026f0502018-06-12 14:28:23 -07003748 array = f2fs_kzalloc(sbi, array_size(NR_CURSEG_TYPE, sizeof(*array)),
3749 GFP_KERNEL);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003750 if (!array)
3751 return -ENOMEM;
3752
3753 SM_I(sbi)->curseg_array = array;
3754
3755 for (i = 0; i < NR_CURSEG_TYPE; i++) {
3756 mutex_init(&array[i].curseg_mutex);
Chao Yuacbf0542017-11-30 19:28:17 +08003757 array[i].sum_blk = f2fs_kzalloc(sbi, PAGE_SIZE, GFP_KERNEL);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003758 if (!array[i].sum_blk)
3759 return -ENOMEM;
Chao Yub7ad7512016-02-19 18:08:46 +08003760 init_rwsem(&array[i].journal_rwsem);
Chao Yuacbf0542017-11-30 19:28:17 +08003761 array[i].journal = f2fs_kzalloc(sbi,
3762 sizeof(struct f2fs_journal), GFP_KERNEL);
Chao Yub7ad7512016-02-19 18:08:46 +08003763 if (!array[i].journal)
3764 return -ENOMEM;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003765 array[i].segno = NULL_SEGNO;
3766 array[i].next_blkoff = 0;
3767 }
3768 return restore_curseg_summaries(sbi);
3769}
3770
Jaegeuk Kimc39a1b32017-12-19 19:16:34 -08003771static int build_sit_entries(struct f2fs_sb_info *sbi)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003772{
3773 struct sit_info *sit_i = SIT_I(sbi);
3774 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
Chao Yub7ad7512016-02-19 18:08:46 +08003775 struct f2fs_journal *journal = curseg->journal;
Yunlei He9c094042016-09-24 12:29:18 +08003776 struct seg_entry *se;
3777 struct f2fs_sit_entry sit;
Chao Yu74de5932013-11-22 09:09:59 +08003778 int sit_blk_cnt = SIT_BLK_CNT(sbi);
3779 unsigned int i, start, end;
3780 unsigned int readed, start_blk = 0;
Jaegeuk Kimc39a1b32017-12-19 19:16:34 -08003781 int err = 0;
Jaegeuk Kim8a29c122018-04-24 21:34:05 -06003782 block_t total_node_blocks = 0;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003783
Chao Yu74de5932013-11-22 09:09:59 +08003784 do {
Chao Yu4d57b862018-05-30 00:20:41 +08003785 readed = f2fs_ra_meta_pages(sbi, start_blk, BIO_MAX_PAGES,
Jaegeuk Kim664ba972016-10-18 11:07:45 -07003786 META_SIT, true);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003787
Chao Yu74de5932013-11-22 09:09:59 +08003788 start = start_blk * sit_i->sents_per_block;
3789 end = (start_blk + readed) * sit_i->sents_per_block;
3790
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07003791 for (; start < end && start < MAIN_SEGS(sbi); start++) {
Chao Yu74de5932013-11-22 09:09:59 +08003792 struct f2fs_sit_block *sit_blk;
Chao Yu74de5932013-11-22 09:09:59 +08003793 struct page *page;
3794
Yunlei He9c094042016-09-24 12:29:18 +08003795 se = &sit_i->sentries[start];
Chao Yu74de5932013-11-22 09:09:59 +08003796 page = get_current_sit_page(sbi, start);
3797 sit_blk = (struct f2fs_sit_block *)page_address(page);
3798 sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)];
3799 f2fs_put_page(page, 1);
Chao Yud600af232016-08-19 23:13:47 +08003800
Jaegeuk Kimc39a1b32017-12-19 19:16:34 -08003801 err = check_block_count(sbi, start, &sit);
3802 if (err)
3803 return err;
Chao Yu74de5932013-11-22 09:09:59 +08003804 seg_info_from_raw_sit(se, &sit);
Jaegeuk Kim8a29c122018-04-24 21:34:05 -06003805 if (IS_NODESEG(se->type))
3806 total_node_blocks += se->valid_blocks;
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07003807
3808 /* build discard map only one time */
Jaegeuk Kim3e025742016-08-02 10:56:40 -07003809 if (f2fs_discard_en(sbi)) {
Chao Yu1f43e2a2017-04-28 13:56:08 +08003810 if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) {
3811 memset(se->discard_map, 0xff,
3812 SIT_VBLOCK_MAP_SIZE);
3813 } else {
3814 memcpy(se->discard_map,
3815 se->cur_valid_map,
3816 SIT_VBLOCK_MAP_SIZE);
3817 sbi->discard_blks +=
3818 sbi->blocks_per_seg -
3819 se->valid_blocks;
3820 }
Jaegeuk Kim3e025742016-08-02 10:56:40 -07003821 }
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07003822
Chao Yud600af232016-08-19 23:13:47 +08003823 if (sbi->segs_per_sec > 1)
3824 get_sec_entry(sbi, start)->valid_blocks +=
3825 se->valid_blocks;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003826 }
Chao Yu74de5932013-11-22 09:09:59 +08003827 start_blk += readed;
3828 } while (start_blk < sit_blk_cnt);
Chao Yud600af232016-08-19 23:13:47 +08003829
3830 down_read(&curseg->journal_rwsem);
3831 for (i = 0; i < sits_in_cursum(journal); i++) {
Chao Yud600af232016-08-19 23:13:47 +08003832 unsigned int old_valid_blocks;
3833
3834 start = le32_to_cpu(segno_in_journal(journal, i));
Jaegeuk Kimb2ca3742018-04-24 15:44:16 -06003835 if (start >= MAIN_SEGS(sbi)) {
3836 f2fs_msg(sbi->sb, KERN_ERR,
3837 "Wrong journal entry on segno %u",
3838 start);
3839 set_sbi_flag(sbi, SBI_NEED_FSCK);
3840 err = -EINVAL;
3841 break;
3842 }
3843
Chao Yud600af232016-08-19 23:13:47 +08003844 se = &sit_i->sentries[start];
3845 sit = sit_in_journal(journal, i);
3846
3847 old_valid_blocks = se->valid_blocks;
Jaegeuk Kim8a29c122018-04-24 21:34:05 -06003848 if (IS_NODESEG(se->type))
3849 total_node_blocks -= old_valid_blocks;
Chao Yud600af232016-08-19 23:13:47 +08003850
Jaegeuk Kimc39a1b32017-12-19 19:16:34 -08003851 err = check_block_count(sbi, start, &sit);
3852 if (err)
3853 break;
Chao Yud600af232016-08-19 23:13:47 +08003854 seg_info_from_raw_sit(se, &sit);
Jaegeuk Kim8a29c122018-04-24 21:34:05 -06003855 if (IS_NODESEG(se->type))
3856 total_node_blocks += se->valid_blocks;
Chao Yud600af232016-08-19 23:13:47 +08003857
3858 if (f2fs_discard_en(sbi)) {
Chao Yu1f43e2a2017-04-28 13:56:08 +08003859 if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) {
3860 memset(se->discard_map, 0xff,
3861 SIT_VBLOCK_MAP_SIZE);
3862 } else {
3863 memcpy(se->discard_map, se->cur_valid_map,
3864 SIT_VBLOCK_MAP_SIZE);
Chao Yua9af3fd2018-04-25 19:38:17 +08003865 sbi->discard_blks += old_valid_blocks;
3866 sbi->discard_blks -= se->valid_blocks;
Chao Yu1f43e2a2017-04-28 13:56:08 +08003867 }
Chao Yud600af232016-08-19 23:13:47 +08003868 }
3869
Chao Yua9af3fd2018-04-25 19:38:17 +08003870 if (sbi->segs_per_sec > 1) {
Chao Yud600af232016-08-19 23:13:47 +08003871 get_sec_entry(sbi, start)->valid_blocks +=
Chao Yua9af3fd2018-04-25 19:38:17 +08003872 se->valid_blocks;
3873 get_sec_entry(sbi, start)->valid_blocks -=
3874 old_valid_blocks;
3875 }
Chao Yud600af232016-08-19 23:13:47 +08003876 }
3877 up_read(&curseg->journal_rwsem);
Jaegeuk Kim8a29c122018-04-24 21:34:05 -06003878
3879 if (!err && total_node_blocks != valid_node_count(sbi)) {
3880 f2fs_msg(sbi->sb, KERN_ERR,
3881 "SIT is corrupted node# %u vs %u",
3882 total_node_blocks, valid_node_count(sbi));
3883 set_sbi_flag(sbi, SBI_NEED_FSCK);
3884 err = -EINVAL;
3885 }
3886
Jaegeuk Kimc39a1b32017-12-19 19:16:34 -08003887 return err;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003888}
3889
3890static void init_free_segmap(struct f2fs_sb_info *sbi)
3891{
3892 unsigned int start;
3893 int type;
3894
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07003895 for (start = 0; start < MAIN_SEGS(sbi); start++) {
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003896 struct seg_entry *sentry = get_seg_entry(sbi, start);
3897 if (!sentry->valid_blocks)
3898 __set_free(sbi, start);
Jaegeuk Kimc79b7ff2016-11-14 18:20:10 -08003899 else
3900 SIT_I(sbi)->written_valid_blocks +=
3901 sentry->valid_blocks;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003902 }
3903
3904 /* set use the current segments */
3905 for (type = CURSEG_HOT_DATA; type <= CURSEG_COLD_NODE; type++) {
3906 struct curseg_info *curseg_t = CURSEG_I(sbi, type);
3907 __set_test_and_inuse(sbi, curseg_t->segno);
3908 }
3909}
3910
3911static void init_dirty_segmap(struct f2fs_sb_info *sbi)
3912{
3913 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
3914 struct free_segmap_info *free_i = FREE_I(sbi);
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07003915 unsigned int segno = 0, offset = 0;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003916 unsigned short valid_blocks;
3917
Namjae Jeon8736fbf2013-06-16 09:49:11 +09003918 while (1) {
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003919 /* find dirty segment based on free segmap */
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07003920 segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset);
3921 if (segno >= MAIN_SEGS(sbi))
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003922 break;
3923 offset = segno + 1;
Jaegeuk Kim302bd342017-04-07 14:33:22 -07003924 valid_blocks = get_valid_blocks(sbi, segno, false);
Jaegeuk Kimec325b52014-09-02 16:24:11 -07003925 if (valid_blocks == sbi->blocks_per_seg || !valid_blocks)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003926 continue;
Jaegeuk Kimec325b52014-09-02 16:24:11 -07003927 if (valid_blocks > sbi->blocks_per_seg) {
3928 f2fs_bug_on(sbi, 1);
3929 continue;
3930 }
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003931 mutex_lock(&dirty_i->seglist_lock);
3932 __locate_dirty_segment(sbi, segno, DIRTY);
3933 mutex_unlock(&dirty_i->seglist_lock);
3934 }
3935}
3936
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +09003937static int init_victim_secmap(struct f2fs_sb_info *sbi)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003938{
3939 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07003940 unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi));
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003941
Chao Yu628b3d12017-11-30 19:28:18 +08003942 dirty_i->victim_secmap = f2fs_kvzalloc(sbi, bitmap_size, GFP_KERNEL);
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +09003943 if (!dirty_i->victim_secmap)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003944 return -ENOMEM;
3945 return 0;
3946}
3947
3948static int build_dirty_segmap(struct f2fs_sb_info *sbi)
3949{
3950 struct dirty_seglist_info *dirty_i;
3951 unsigned int bitmap_size, i;
3952
3953 /* allocate memory for dirty segments list information */
Chao Yuacbf0542017-11-30 19:28:17 +08003954 dirty_i = f2fs_kzalloc(sbi, sizeof(struct dirty_seglist_info),
3955 GFP_KERNEL);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003956 if (!dirty_i)
3957 return -ENOMEM;
3958
3959 SM_I(sbi)->dirty_info = dirty_i;
3960 mutex_init(&dirty_i->seglist_lock);
3961
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07003962 bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi));
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003963
3964 for (i = 0; i < NR_DIRTY_TYPE; i++) {
Chao Yu628b3d12017-11-30 19:28:18 +08003965 dirty_i->dirty_segmap[i] = f2fs_kvzalloc(sbi, bitmap_size,
3966 GFP_KERNEL);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003967 if (!dirty_i->dirty_segmap[i])
3968 return -ENOMEM;
3969 }
3970
3971 init_dirty_segmap(sbi);
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +09003972 return init_victim_secmap(sbi);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003973}
3974
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09003975/*
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003976 * Update min, max modified time for cost-benefit GC algorithm
3977 */
3978static void init_min_max_mtime(struct f2fs_sb_info *sbi)
3979{
3980 struct sit_info *sit_i = SIT_I(sbi);
3981 unsigned int segno;
3982
Chao Yu3d26fa62017-10-30 17:49:53 +08003983 down_write(&sit_i->sentry_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003984
Chao Yu5ad25442018-05-15 18:59:55 +08003985 sit_i->min_mtime = ULLONG_MAX;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003986
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07003987 for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09003988 unsigned int i;
3989 unsigned long long mtime = 0;
3990
3991 for (i = 0; i < sbi->segs_per_sec; i++)
3992 mtime += get_seg_entry(sbi, segno + i)->mtime;
3993
3994 mtime = div_u64(mtime, sbi->segs_per_sec);
3995
3996 if (sit_i->min_mtime > mtime)
3997 sit_i->min_mtime = mtime;
3998 }
Chao Yua1f72ac22018-06-04 23:20:17 +08003999 sit_i->max_mtime = get_mtime(sbi, false);
Chao Yu3d26fa62017-10-30 17:49:53 +08004000 up_write(&sit_i->sentry_lock);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004001}
4002
Chao Yu4d57b862018-05-30 00:20:41 +08004003int f2fs_build_segment_manager(struct f2fs_sb_info *sbi)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004004{
4005 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
4006 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Namjae Jeon1042d602012-12-01 10:56:13 +09004007 struct f2fs_sm_info *sm_info;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004008 int err;
4009
Chao Yuacbf0542017-11-30 19:28:17 +08004010 sm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_sm_info), GFP_KERNEL);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004011 if (!sm_info)
4012 return -ENOMEM;
4013
4014 /* init sm info */
4015 sbi->sm_info = sm_info;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004016 sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr);
4017 sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr);
4018 sm_info->segment_count = le32_to_cpu(raw_super->segment_count);
4019 sm_info->reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
4020 sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
4021 sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main);
4022 sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);
Jaegeuk Kim58c41032014-03-19 14:17:21 +09004023 sm_info->rec_prefree_segments = sm_info->main_segments *
4024 DEF_RECLAIM_PREFREE_SEGMENTS / 100;
Jaegeuk Kim44a83492016-07-13 18:23:35 -07004025 if (sm_info->rec_prefree_segments > DEF_MAX_RECLAIM_PREFREE_SEGMENTS)
4026 sm_info->rec_prefree_segments = DEF_MAX_RECLAIM_PREFREE_SEGMENTS;
4027
Jaegeuk Kim52763a42016-06-13 09:47:48 -07004028 if (!test_opt(sbi, LFS))
4029 sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC;
Jaegeuk Kim216fbd62013-11-07 13:13:42 +09004030 sm_info->min_ipu_util = DEF_MIN_IPU_UTIL;
Jaegeuk Kimc1ce1b02014-09-10 16:53:02 -07004031 sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS;
Jaegeuk Kimef095d12017-03-24 20:05:13 -04004032 sm_info->min_hot_blocks = DEF_MIN_HOT_BLOCKS;
Chao Yua2a12b62017-10-28 16:52:33 +08004033 sm_info->min_ssr_sections = reserved_sections(sbi);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004034
Chao Yu184a5cd2014-09-04 18:13:01 +08004035 INIT_LIST_HEAD(&sm_info->sit_entry_set);
4036
Chao Yu2b603112017-11-02 20:41:03 +08004037 init_rwsem(&sm_info->curseg_lock);
4038
Yunlei Hed4fdf8b2017-06-01 16:43:51 +08004039 if (!f2fs_readonly(sbi->sb)) {
Chao Yu4d57b862018-05-30 00:20:41 +08004040 err = f2fs_create_flush_cmd_control(sbi);
Gu Zheng2163d192014-04-27 14:21:33 +08004041 if (err)
Gu Zhenga688b9d9e2014-04-27 14:21:21 +08004042 return err;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +09004043 }
4044
Jaegeuk Kim0b54fb82017-01-11 14:40:24 -08004045 err = create_discard_cmd_control(sbi);
4046 if (err)
4047 return err;
4048
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004049 err = build_sit_info(sbi);
4050 if (err)
4051 return err;
4052 err = build_free_segmap(sbi);
4053 if (err)
4054 return err;
4055 err = build_curseg(sbi);
4056 if (err)
4057 return err;
4058
4059 /* reinit free segmap based on SIT */
Jaegeuk Kimc39a1b32017-12-19 19:16:34 -08004060 err = build_sit_entries(sbi);
4061 if (err)
4062 return err;
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004063
4064 init_free_segmap(sbi);
4065 err = build_dirty_segmap(sbi);
4066 if (err)
4067 return err;
4068
4069 init_min_max_mtime(sbi);
4070 return 0;
4071}
4072
4073static void discard_dirty_segmap(struct f2fs_sb_info *sbi,
4074 enum dirty_type dirty_type)
4075{
4076 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
4077
4078 mutex_lock(&dirty_i->seglist_lock);
Jaegeuk Kim39307a82015-09-22 13:50:47 -07004079 kvfree(dirty_i->dirty_segmap[dirty_type]);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004080 dirty_i->nr_dirty[dirty_type] = 0;
4081 mutex_unlock(&dirty_i->seglist_lock);
4082}
4083
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +09004084static void destroy_victim_secmap(struct f2fs_sb_info *sbi)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004085{
4086 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
Jaegeuk Kim39307a82015-09-22 13:50:47 -07004087 kvfree(dirty_i->victim_secmap);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004088}
4089
4090static void destroy_dirty_segmap(struct f2fs_sb_info *sbi)
4091{
4092 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
4093 int i;
4094
4095 if (!dirty_i)
4096 return;
4097
4098 /* discard pre-free/dirty segments list */
4099 for (i = 0; i < NR_DIRTY_TYPE; i++)
4100 discard_dirty_segmap(sbi, i);
4101
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +09004102 destroy_victim_secmap(sbi);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004103 SM_I(sbi)->dirty_info = NULL;
4104 kfree(dirty_i);
4105}
4106
4107static void destroy_curseg(struct f2fs_sb_info *sbi)
4108{
4109 struct curseg_info *array = SM_I(sbi)->curseg_array;
4110 int i;
4111
4112 if (!array)
4113 return;
4114 SM_I(sbi)->curseg_array = NULL;
Chao Yub7ad7512016-02-19 18:08:46 +08004115 for (i = 0; i < NR_CURSEG_TYPE; i++) {
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004116 kfree(array[i].sum_blk);
Chao Yub7ad7512016-02-19 18:08:46 +08004117 kfree(array[i].journal);
4118 }
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004119 kfree(array);
4120}
4121
4122static void destroy_free_segmap(struct f2fs_sb_info *sbi)
4123{
4124 struct free_segmap_info *free_i = SM_I(sbi)->free_info;
4125 if (!free_i)
4126 return;
4127 SM_I(sbi)->free_info = NULL;
Jaegeuk Kim39307a82015-09-22 13:50:47 -07004128 kvfree(free_i->free_segmap);
4129 kvfree(free_i->free_secmap);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004130 kfree(free_i);
4131}
4132
4133static void destroy_sit_info(struct f2fs_sb_info *sbi)
4134{
4135 struct sit_info *sit_i = SIT_I(sbi);
4136 unsigned int start;
4137
4138 if (!sit_i)
4139 return;
4140
4141 if (sit_i->sentries) {
Jaegeuk Kim7cd85582014-09-23 11:23:01 -07004142 for (start = 0; start < MAIN_SEGS(sbi); start++) {
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004143 kfree(sit_i->sentries[start].cur_valid_map);
Chao Yu355e7892017-01-07 18:51:01 +08004144#ifdef CONFIG_F2FS_CHECK_FS
4145 kfree(sit_i->sentries[start].cur_valid_map_mir);
4146#endif
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004147 kfree(sit_i->sentries[start].ckpt_valid_map);
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07004148 kfree(sit_i->sentries[start].discard_map);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004149 }
4150 }
Jaegeuk Kim60a3b782015-02-10 16:44:29 -08004151 kfree(sit_i->tmp_map);
4152
Jaegeuk Kim39307a82015-09-22 13:50:47 -07004153 kvfree(sit_i->sentries);
4154 kvfree(sit_i->sec_entries);
4155 kvfree(sit_i->dirty_sentries_bitmap);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004156
4157 SM_I(sbi)->sit_info = NULL;
4158 kfree(sit_i->sit_bitmap);
Chao Yuae27d622017-01-07 18:52:34 +08004159#ifdef CONFIG_F2FS_CHECK_FS
4160 kfree(sit_i->sit_bitmap_mir);
4161#endif
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004162 kfree(sit_i);
4163}
4164
Chao Yu4d57b862018-05-30 00:20:41 +08004165void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi)
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004166{
4167 struct f2fs_sm_info *sm_info = SM_I(sbi);
Gu Zhenga688b9d9e2014-04-27 14:21:21 +08004168
Chao Yu3b03f722013-11-06 09:12:04 +08004169 if (!sm_info)
4170 return;
Chao Yu4d57b862018-05-30 00:20:41 +08004171 f2fs_destroy_flush_cmd_control(sbi, true);
Chao Yuf0994052017-03-27 18:14:04 +08004172 destroy_discard_cmd_control(sbi);
Jaegeuk Kim351df4b2012-11-02 17:09:16 +09004173 destroy_dirty_segmap(sbi);
4174 destroy_curseg(sbi);
4175 destroy_free_segmap(sbi);
4176 destroy_sit_info(sbi);
4177 sbi->sm_info = NULL;
4178 kfree(sm_info);
4179}
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09004180
Chao Yu4d57b862018-05-30 00:20:41 +08004181int __init f2fs_create_segment_manager_caches(void)
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09004182{
4183 discard_entry_slab = f2fs_kmem_cache_create("discard_entry",
Gu Zhenge8512d22014-03-07 18:43:28 +08004184 sizeof(struct discard_entry));
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09004185 if (!discard_entry_slab)
Chao Yu184a5cd2014-09-04 18:13:01 +08004186 goto fail;
4187
Jaegeuk Kimb01a9202017-01-09 14:13:03 -08004188 discard_cmd_slab = f2fs_kmem_cache_create("discard_cmd",
4189 sizeof(struct discard_cmd));
4190 if (!discard_cmd_slab)
Chao Yu6ab2a302016-09-05 12:28:26 +08004191 goto destroy_discard_entry;
Chao Yu275b66b2016-08-29 23:58:34 +08004192
Chao Yu184a5cd2014-09-04 18:13:01 +08004193 sit_entry_set_slab = f2fs_kmem_cache_create("sit_entry_set",
Changman Leec9ee0082014-11-21 15:42:07 +09004194 sizeof(struct sit_entry_set));
Chao Yu184a5cd2014-09-04 18:13:01 +08004195 if (!sit_entry_set_slab)
Jaegeuk Kimb01a9202017-01-09 14:13:03 -08004196 goto destroy_discard_cmd;
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07004197
4198 inmem_entry_slab = f2fs_kmem_cache_create("inmem_page_entry",
4199 sizeof(struct inmem_pages));
4200 if (!inmem_entry_slab)
4201 goto destroy_sit_entry_set;
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09004202 return 0;
Chao Yu184a5cd2014-09-04 18:13:01 +08004203
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07004204destroy_sit_entry_set:
4205 kmem_cache_destroy(sit_entry_set_slab);
Jaegeuk Kimb01a9202017-01-09 14:13:03 -08004206destroy_discard_cmd:
4207 kmem_cache_destroy(discard_cmd_slab);
Chao Yu6ab2a302016-09-05 12:28:26 +08004208destroy_discard_entry:
Chao Yu184a5cd2014-09-04 18:13:01 +08004209 kmem_cache_destroy(discard_entry_slab);
4210fail:
4211 return -ENOMEM;
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09004212}
4213
Chao Yu4d57b862018-05-30 00:20:41 +08004214void f2fs_destroy_segment_manager_caches(void)
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09004215{
Chao Yu184a5cd2014-09-04 18:13:01 +08004216 kmem_cache_destroy(sit_entry_set_slab);
Jaegeuk Kimb01a9202017-01-09 14:13:03 -08004217 kmem_cache_destroy(discard_cmd_slab);
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09004218 kmem_cache_destroy(discard_entry_slab);
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07004219 kmem_cache_destroy(inmem_entry_slab);
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09004220}