Thomas Gleixner | 7336d0e | 2019-05-31 01:09:56 -0700 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
Bob Peterson | 0d0868b | 2007-12-11 18:51:25 -0600 | [diff] [blame] | 4 | * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | /* |
| 8 | * Quota change tags are associated with each transaction that allocates or |
| 9 | * deallocates space. Those changes are accumulated locally to each node (in a |
| 10 | * per-node file) and then are periodically synced to the quota file. This |
| 11 | * avoids the bottleneck of constantly touching the quota file, but introduces |
| 12 | * fuzziness in the current usage value of IDs that are being used on different |
| 13 | * nodes in the cluster simultaneously. So, it is possible for a user on |
| 14 | * multiple nodes to overrun their quota, but that overrun is controlable. |
Steven Whitehouse | 1e72c0f | 2009-09-15 20:42:56 +0100 | [diff] [blame] | 15 | * Since quota tags are part of transactions, there is no need for a quota check |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 16 | * program to be run on node crashes or anything like that. |
| 17 | * |
| 18 | * There are couple of knobs that let the administrator manage the quota |
| 19 | * fuzziness. "quota_quantum" sets the maximum time a quota change can be |
| 20 | * sitting on one node before being synced to the quota file. (The default is |
| 21 | * 60 seconds.) Another knob, "quota_scale" controls how quickly the frequency |
| 22 | * of quota file syncs increases as the user moves closer to their limit. The |
| 23 | * more frequent the syncs, the more accurate the quota enforcement, but that |
| 24 | * means that there is more contention between the nodes for the quota file. |
| 25 | * The default value is one. This sets the maximum theoretical quota overrun |
| 26 | * (with infinite node with infinite bandwidth) to twice the user's limit. (In |
| 27 | * practice, the maximum overrun you see should be much less.) A "quota_scale" |
| 28 | * number greater than one makes quota syncs more frequent and reduces the |
| 29 | * maximum overrun. Numbers less than one (but greater than zero) make quota |
| 30 | * syncs less frequent. |
| 31 | * |
| 32 | * GFS quotas also use per-ID Lock Value Blocks (LVBs) to cache the contents of |
| 33 | * the quota file, so it is not being constantly read. |
| 34 | */ |
| 35 | |
Joe Perches | d77d1b5 | 2014-03-06 12:10:45 -0800 | [diff] [blame] | 36 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 37 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 38 | #include <linux/sched.h> |
| 39 | #include <linux/slab.h> |
Ying Han | 1495f23 | 2011-05-24 17:12:27 -0700 | [diff] [blame] | 40 | #include <linux/mm.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 41 | #include <linux/spinlock.h> |
| 42 | #include <linux/completion.h> |
| 43 | #include <linux/buffer_head.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 44 | #include <linux/sort.h> |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 45 | #include <linux/fs.h> |
Steven Whitehouse | 2e565bb | 2006-10-02 11:38:25 -0400 | [diff] [blame] | 46 | #include <linux/bio.h> |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 47 | #include <linux/gfs2_ondisk.h> |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 48 | #include <linux/kthread.h> |
| 49 | #include <linux/freezer.h> |
Steven Whitehouse | 2ec4650 | 2009-09-28 12:49:15 +0100 | [diff] [blame] | 50 | #include <linux/quota.h> |
Steven Whitehouse | 1d371b5 | 2009-09-11 15:57:27 +0100 | [diff] [blame] | 51 | #include <linux/dqblk_xfs.h> |
Steven Whitehouse | 9b9f039 | 2013-11-01 14:52:06 -0400 | [diff] [blame] | 52 | #include <linux/lockref.h> |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 53 | #include <linux/list_lru.h> |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 54 | #include <linux/rcupdate.h> |
| 55 | #include <linux/rculist_bl.h> |
| 56 | #include <linux/bit_spinlock.h> |
| 57 | #include <linux/jhash.h> |
Steven Whitehouse | 1e3d362 | 2014-01-15 12:57:25 +0000 | [diff] [blame] | 58 | #include <linux/vmalloc.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 59 | |
| 60 | #include "gfs2.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 61 | #include "incore.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 62 | #include "bmap.h" |
| 63 | #include "glock.h" |
| 64 | #include "glops.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 65 | #include "log.h" |
| 66 | #include "meta_io.h" |
| 67 | #include "quota.h" |
| 68 | #include "rgrp.h" |
| 69 | #include "super.h" |
| 70 | #include "trans.h" |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 71 | #include "inode.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 72 | #include "util.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 73 | |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 74 | #define GFS2_QD_HASH_SHIFT 12 |
Fabian Frederick | 47a9a52 | 2016-08-02 12:05:27 -0500 | [diff] [blame] | 75 | #define GFS2_QD_HASH_SIZE BIT(GFS2_QD_HASH_SHIFT) |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 76 | #define GFS2_QD_HASH_MASK (GFS2_QD_HASH_SIZE - 1) |
| 77 | |
| 78 | /* Lock order: qd_lock -> bucket lock -> qd->lockref.lock -> lru lock */ |
Steven Whitehouse | 2d9e723 | 2013-12-13 11:46:28 +0000 | [diff] [blame] | 79 | /* -> sd_bitmap_lock */ |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 80 | static DEFINE_SPINLOCK(qd_lock); |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 81 | struct list_lru gfs2_qd_lru; |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 82 | |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 83 | static struct hlist_bl_head qd_hash_table[GFS2_QD_HASH_SIZE]; |
| 84 | |
| 85 | static unsigned int gfs2_qd_hash(const struct gfs2_sbd *sdp, |
| 86 | const struct kqid qid) |
| 87 | { |
| 88 | unsigned int h; |
| 89 | |
| 90 | h = jhash(&sdp, sizeof(struct gfs2_sbd *), 0); |
| 91 | h = jhash(&qid, sizeof(struct kqid), h); |
| 92 | |
| 93 | return h & GFS2_QD_HASH_MASK; |
| 94 | } |
| 95 | |
| 96 | static inline void spin_lock_bucket(unsigned int hash) |
| 97 | { |
| 98 | hlist_bl_lock(&qd_hash_table[hash]); |
| 99 | } |
| 100 | |
| 101 | static inline void spin_unlock_bucket(unsigned int hash) |
| 102 | { |
| 103 | hlist_bl_unlock(&qd_hash_table[hash]); |
| 104 | } |
| 105 | |
| 106 | static void gfs2_qd_dealloc(struct rcu_head *rcu) |
| 107 | { |
| 108 | struct gfs2_quota_data *qd = container_of(rcu, struct gfs2_quota_data, qd_rcu); |
| 109 | kmem_cache_free(gfs2_quotad_cachep, qd); |
| 110 | } |
| 111 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 112 | static void gfs2_qd_dispose(struct list_head *list) |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 113 | { |
| 114 | struct gfs2_quota_data *qd; |
| 115 | struct gfs2_sbd *sdp; |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 116 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 117 | while (!list_empty(list)) { |
| 118 | qd = list_entry(list->next, struct gfs2_quota_data, qd_lru); |
Bob Peterson | 15562c4 | 2015-03-16 11:52:05 -0500 | [diff] [blame] | 119 | sdp = qd->qd_gl->gl_name.ln_sbd; |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 120 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 121 | list_del(&qd->qd_lru); |
| 122 | |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 123 | /* Free from the filesystem-specific list */ |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 124 | spin_lock(&qd_lock); |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 125 | list_del(&qd->qd_list); |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 126 | spin_unlock(&qd_lock); |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 127 | |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 128 | spin_lock_bucket(qd->qd_hash); |
| 129 | hlist_bl_del_rcu(&qd->qd_hlist); |
| 130 | spin_unlock_bucket(qd->qd_hash); |
| 131 | |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 132 | gfs2_assert_warn(sdp, !qd->qd_change); |
| 133 | gfs2_assert_warn(sdp, !qd->qd_slot_count); |
| 134 | gfs2_assert_warn(sdp, !qd->qd_bh_count); |
| 135 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 136 | gfs2_glock_put(qd->qd_gl); |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 137 | atomic_dec(&sdp->sd_quota_count); |
| 138 | |
| 139 | /* Delete it from the common reclaim list */ |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 140 | call_rcu(&qd->qd_rcu, gfs2_qd_dealloc); |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 141 | } |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 142 | } |
| 143 | |
| 144 | |
Vladimir Davydov | 3f97b16 | 2015-02-12 14:59:35 -0800 | [diff] [blame] | 145 | static enum lru_status gfs2_qd_isolate(struct list_head *item, |
| 146 | struct list_lru_one *lru, spinlock_t *lru_lock, void *arg) |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 147 | { |
| 148 | struct list_head *dispose = arg; |
| 149 | struct gfs2_quota_data *qd = list_entry(item, struct gfs2_quota_data, qd_lru); |
| 150 | |
| 151 | if (!spin_trylock(&qd->qd_lockref.lock)) |
| 152 | return LRU_SKIP; |
| 153 | |
| 154 | if (qd->qd_lockref.count == 0) { |
| 155 | lockref_mark_dead(&qd->qd_lockref); |
Vladimir Davydov | 3f97b16 | 2015-02-12 14:59:35 -0800 | [diff] [blame] | 156 | list_lru_isolate_move(lru, &qd->qd_lru, dispose); |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 157 | } |
| 158 | |
| 159 | spin_unlock(&qd->qd_lockref.lock); |
| 160 | return LRU_REMOVED; |
| 161 | } |
| 162 | |
| 163 | static unsigned long gfs2_qd_shrink_scan(struct shrinker *shrink, |
| 164 | struct shrink_control *sc) |
| 165 | { |
| 166 | LIST_HEAD(dispose); |
| 167 | unsigned long freed; |
| 168 | |
| 169 | if (!(sc->gfp_mask & __GFP_FS)) |
| 170 | return SHRINK_STOP; |
| 171 | |
Vladimir Davydov | 503c358 | 2015-02-12 14:58:47 -0800 | [diff] [blame] | 172 | freed = list_lru_shrink_walk(&gfs2_qd_lru, sc, |
| 173 | gfs2_qd_isolate, &dispose); |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 174 | |
| 175 | gfs2_qd_dispose(&dispose); |
| 176 | |
Dave Chinner | 1ab6c49 | 2013-08-28 10:18:09 +1000 | [diff] [blame] | 177 | return freed; |
| 178 | } |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 179 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 180 | static unsigned long gfs2_qd_shrink_count(struct shrinker *shrink, |
| 181 | struct shrink_control *sc) |
Dave Chinner | 1ab6c49 | 2013-08-28 10:18:09 +1000 | [diff] [blame] | 182 | { |
Vladimir Davydov | 503c358 | 2015-02-12 14:58:47 -0800 | [diff] [blame] | 183 | return vfs_pressure_ratio(list_lru_shrink_count(&gfs2_qd_lru, sc)); |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 184 | } |
| 185 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 186 | struct shrinker gfs2_qd_shrinker = { |
| 187 | .count_objects = gfs2_qd_shrink_count, |
| 188 | .scan_objects = gfs2_qd_shrink_scan, |
| 189 | .seeks = DEFAULT_SEEKS, |
| 190 | .flags = SHRINKER_NUMA_AWARE, |
| 191 | }; |
| 192 | |
| 193 | |
Eric W. Biederman | 2f6c989 | 2013-01-31 18:33:38 -0800 | [diff] [blame] | 194 | static u64 qd2index(struct gfs2_quota_data *qd) |
| 195 | { |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 196 | struct kqid qid = qd->qd_id; |
| 197 | return (2 * (u64)from_kqid(&init_user_ns, qid)) + |
Bob Peterson | 37f7157 | 2013-05-10 11:59:18 -0400 | [diff] [blame] | 198 | ((qid.type == USRQUOTA) ? 0 : 1); |
Eric W. Biederman | 2f6c989 | 2013-01-31 18:33:38 -0800 | [diff] [blame] | 199 | } |
| 200 | |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 201 | static u64 qd2offset(struct gfs2_quota_data *qd) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 202 | { |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 203 | u64 offset; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 204 | |
Eric W. Biederman | 2f6c989 | 2013-01-31 18:33:38 -0800 | [diff] [blame] | 205 | offset = qd2index(qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 206 | offset *= sizeof(struct gfs2_quota); |
| 207 | |
| 208 | return offset; |
| 209 | } |
| 210 | |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 211 | static struct gfs2_quota_data *qd_alloc(unsigned hash, struct gfs2_sbd *sdp, struct kqid qid) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 212 | { |
| 213 | struct gfs2_quota_data *qd; |
| 214 | int error; |
| 215 | |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 216 | qd = kmem_cache_zalloc(gfs2_quotad_cachep, GFP_NOFS); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 217 | if (!qd) |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 218 | return NULL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 219 | |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 220 | qd->qd_sbd = sdp; |
Steven Whitehouse | 9b9f039 | 2013-11-01 14:52:06 -0400 | [diff] [blame] | 221 | qd->qd_lockref.count = 1; |
| 222 | spin_lock_init(&qd->qd_lockref.lock); |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 223 | qd->qd_id = qid; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 224 | qd->qd_slot = -1; |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 225 | INIT_LIST_HEAD(&qd->qd_lru); |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 226 | qd->qd_hash = hash; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 227 | |
Eric W. Biederman | 2f6c989 | 2013-01-31 18:33:38 -0800 | [diff] [blame] | 228 | error = gfs2_glock_get(sdp, qd2index(qd), |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 229 | &gfs2_quota_glops, CREATE, &qd->qd_gl); |
| 230 | if (error) |
| 231 | goto fail; |
| 232 | |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 233 | return qd; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 234 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 235 | fail: |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 236 | kmem_cache_free(gfs2_quotad_cachep, qd); |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 237 | return NULL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 238 | } |
| 239 | |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 240 | static struct gfs2_quota_data *gfs2_qd_search_bucket(unsigned int hash, |
| 241 | const struct gfs2_sbd *sdp, |
| 242 | struct kqid qid) |
| 243 | { |
| 244 | struct gfs2_quota_data *qd; |
| 245 | struct hlist_bl_node *h; |
| 246 | |
| 247 | hlist_bl_for_each_entry_rcu(qd, h, &qd_hash_table[hash], qd_hlist) { |
| 248 | if (!qid_eq(qd->qd_id, qid)) |
| 249 | continue; |
| 250 | if (qd->qd_sbd != sdp) |
| 251 | continue; |
| 252 | if (lockref_get_not_dead(&qd->qd_lockref)) { |
| 253 | list_lru_del(&gfs2_qd_lru, &qd->qd_lru); |
| 254 | return qd; |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | return NULL; |
| 259 | } |
| 260 | |
| 261 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 262 | static int qd_get(struct gfs2_sbd *sdp, struct kqid qid, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 263 | struct gfs2_quota_data **qdp) |
| 264 | { |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 265 | struct gfs2_quota_data *qd, *new_qd; |
| 266 | unsigned int hash = gfs2_qd_hash(sdp, qid); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 267 | |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 268 | rcu_read_lock(); |
| 269 | *qdp = qd = gfs2_qd_search_bucket(hash, sdp, qid); |
| 270 | rcu_read_unlock(); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 271 | |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 272 | if (qd) |
| 273 | return 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 274 | |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 275 | new_qd = qd_alloc(hash, sdp, qid); |
| 276 | if (!new_qd) |
| 277 | return -ENOMEM; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 278 | |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 279 | spin_lock(&qd_lock); |
| 280 | spin_lock_bucket(hash); |
| 281 | *qdp = qd = gfs2_qd_search_bucket(hash, sdp, qid); |
| 282 | if (qd == NULL) { |
| 283 | *qdp = new_qd; |
| 284 | list_add(&new_qd->qd_list, &sdp->sd_quota_list); |
| 285 | hlist_bl_add_head_rcu(&new_qd->qd_hlist, &qd_hash_table[hash]); |
| 286 | atomic_inc(&sdp->sd_quota_count); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 287 | } |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 288 | spin_unlock_bucket(hash); |
| 289 | spin_unlock(&qd_lock); |
| 290 | |
| 291 | if (qd) { |
| 292 | gfs2_glock_put(new_qd->qd_gl); |
| 293 | kmem_cache_free(gfs2_quotad_cachep, new_qd); |
| 294 | } |
| 295 | |
| 296 | return 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 297 | } |
| 298 | |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 299 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 300 | static void qd_hold(struct gfs2_quota_data *qd) |
| 301 | { |
Bob Peterson | 15562c4 | 2015-03-16 11:52:05 -0500 | [diff] [blame] | 302 | struct gfs2_sbd *sdp = qd->qd_gl->gl_name.ln_sbd; |
Steven Whitehouse | 9b9f039 | 2013-11-01 14:52:06 -0400 | [diff] [blame] | 303 | gfs2_assert(sdp, !__lockref_is_dead(&qd->qd_lockref)); |
| 304 | lockref_get(&qd->qd_lockref); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 305 | } |
| 306 | |
| 307 | static void qd_put(struct gfs2_quota_data *qd) |
| 308 | { |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 309 | if (lockref_put_or_lock(&qd->qd_lockref)) |
| 310 | return; |
Steven Whitehouse | 9b9f039 | 2013-11-01 14:52:06 -0400 | [diff] [blame] | 311 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 312 | qd->qd_lockref.count = 0; |
| 313 | list_lru_add(&gfs2_qd_lru, &qd->qd_lru); |
| 314 | spin_unlock(&qd->qd_lockref.lock); |
Steven Whitehouse | 9b9f039 | 2013-11-01 14:52:06 -0400 | [diff] [blame] | 315 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 316 | } |
| 317 | |
| 318 | static int slot_get(struct gfs2_quota_data *qd) |
| 319 | { |
Steven Whitehouse | ee2411a | 2013-12-12 17:29:32 +0000 | [diff] [blame] | 320 | struct gfs2_sbd *sdp = qd->qd_sbd; |
| 321 | unsigned int bit; |
| 322 | int error = 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 323 | |
Steven Whitehouse | 2d9e723 | 2013-12-13 11:46:28 +0000 | [diff] [blame] | 324 | spin_lock(&sdp->sd_bitmap_lock); |
Steven Whitehouse | ee2411a | 2013-12-12 17:29:32 +0000 | [diff] [blame] | 325 | if (qd->qd_slot_count != 0) |
| 326 | goto out; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 327 | |
Steven Whitehouse | ee2411a | 2013-12-12 17:29:32 +0000 | [diff] [blame] | 328 | error = -ENOSPC; |
| 329 | bit = find_first_zero_bit(sdp->sd_quota_bitmap, sdp->sd_quota_slots); |
| 330 | if (bit < sdp->sd_quota_slots) { |
| 331 | set_bit(bit, sdp->sd_quota_bitmap); |
| 332 | qd->qd_slot = bit; |
Abhi Das | e9fb7c7 | 2014-03-31 01:19:29 -0500 | [diff] [blame] | 333 | error = 0; |
Steven Whitehouse | ee2411a | 2013-12-12 17:29:32 +0000 | [diff] [blame] | 334 | out: |
| 335 | qd->qd_slot_count++; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 336 | } |
Steven Whitehouse | 2d9e723 | 2013-12-13 11:46:28 +0000 | [diff] [blame] | 337 | spin_unlock(&sdp->sd_bitmap_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 338 | |
Steven Whitehouse | ee2411a | 2013-12-12 17:29:32 +0000 | [diff] [blame] | 339 | return error; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 340 | } |
| 341 | |
| 342 | static void slot_hold(struct gfs2_quota_data *qd) |
| 343 | { |
Steven Whitehouse | ee2411a | 2013-12-12 17:29:32 +0000 | [diff] [blame] | 344 | struct gfs2_sbd *sdp = qd->qd_sbd; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 345 | |
Steven Whitehouse | 2d9e723 | 2013-12-13 11:46:28 +0000 | [diff] [blame] | 346 | spin_lock(&sdp->sd_bitmap_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 347 | gfs2_assert(sdp, qd->qd_slot_count); |
| 348 | qd->qd_slot_count++; |
Steven Whitehouse | 2d9e723 | 2013-12-13 11:46:28 +0000 | [diff] [blame] | 349 | spin_unlock(&sdp->sd_bitmap_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 350 | } |
| 351 | |
| 352 | static void slot_put(struct gfs2_quota_data *qd) |
| 353 | { |
Steven Whitehouse | ee2411a | 2013-12-12 17:29:32 +0000 | [diff] [blame] | 354 | struct gfs2_sbd *sdp = qd->qd_sbd; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 355 | |
Steven Whitehouse | 2d9e723 | 2013-12-13 11:46:28 +0000 | [diff] [blame] | 356 | spin_lock(&sdp->sd_bitmap_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 357 | gfs2_assert(sdp, qd->qd_slot_count); |
| 358 | if (!--qd->qd_slot_count) { |
Steven Whitehouse | ee2411a | 2013-12-12 17:29:32 +0000 | [diff] [blame] | 359 | BUG_ON(!test_and_clear_bit(qd->qd_slot, sdp->sd_quota_bitmap)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 360 | qd->qd_slot = -1; |
| 361 | } |
Steven Whitehouse | 2d9e723 | 2013-12-13 11:46:28 +0000 | [diff] [blame] | 362 | spin_unlock(&sdp->sd_bitmap_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 363 | } |
| 364 | |
| 365 | static int bh_get(struct gfs2_quota_data *qd) |
| 366 | { |
Bob Peterson | 15562c4 | 2015-03-16 11:52:05 -0500 | [diff] [blame] | 367 | struct gfs2_sbd *sdp = qd->qd_gl->gl_name.ln_sbd; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 368 | struct gfs2_inode *ip = GFS2_I(sdp->sd_qc_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 369 | unsigned int block, offset; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 370 | struct buffer_head *bh; |
| 371 | int error; |
Steven Whitehouse | 2359125 | 2006-10-13 17:25:45 -0400 | [diff] [blame] | 372 | struct buffer_head bh_map = { .b_state = 0, .b_blocknr = 0 }; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 373 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 374 | mutex_lock(&sdp->sd_quota_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 375 | |
| 376 | if (qd->qd_bh_count++) { |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 377 | mutex_unlock(&sdp->sd_quota_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 378 | return 0; |
| 379 | } |
| 380 | |
| 381 | block = qd->qd_slot / sdp->sd_qc_per_block; |
Bob Peterson | 0d0868b | 2007-12-11 18:51:25 -0600 | [diff] [blame] | 382 | offset = qd->qd_slot % sdp->sd_qc_per_block; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 383 | |
Fabian Frederick | 47a9a52 | 2016-08-02 12:05:27 -0500 | [diff] [blame] | 384 | bh_map.b_size = BIT(ip->i_inode.i_blkbits); |
Bob Peterson | e9e1ef2 | 2007-12-10 14:13:27 -0600 | [diff] [blame] | 385 | error = gfs2_block_map(&ip->i_inode, block, &bh_map, 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 386 | if (error) |
| 387 | goto fail; |
Andreas Gruenbacher | c8d5770 | 2015-11-11 15:00:35 -0600 | [diff] [blame] | 388 | error = gfs2_meta_read(ip->i_gl, bh_map.b_blocknr, DIO_WAIT, 0, &bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 389 | if (error) |
| 390 | goto fail; |
| 391 | error = -EIO; |
| 392 | if (gfs2_metatype_check(sdp, bh, GFS2_METATYPE_QC)) |
| 393 | goto fail_brelse; |
| 394 | |
| 395 | qd->qd_bh = bh; |
| 396 | qd->qd_bh_qc = (struct gfs2_quota_change *) |
| 397 | (bh->b_data + sizeof(struct gfs2_meta_header) + |
| 398 | offset * sizeof(struct gfs2_quota_change)); |
| 399 | |
Josef Whiter | 2e95b66 | 2007-02-20 00:03:29 -0500 | [diff] [blame] | 400 | mutex_unlock(&sdp->sd_quota_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 401 | |
| 402 | return 0; |
| 403 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 404 | fail_brelse: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 405 | brelse(bh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 406 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 407 | qd->qd_bh_count--; |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 408 | mutex_unlock(&sdp->sd_quota_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 409 | return error; |
| 410 | } |
| 411 | |
| 412 | static void bh_put(struct gfs2_quota_data *qd) |
| 413 | { |
Bob Peterson | 15562c4 | 2015-03-16 11:52:05 -0500 | [diff] [blame] | 414 | struct gfs2_sbd *sdp = qd->qd_gl->gl_name.ln_sbd; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 415 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 416 | mutex_lock(&sdp->sd_quota_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 417 | gfs2_assert(sdp, qd->qd_bh_count); |
| 418 | if (!--qd->qd_bh_count) { |
| 419 | brelse(qd->qd_bh); |
| 420 | qd->qd_bh = NULL; |
| 421 | qd->qd_bh_qc = NULL; |
| 422 | } |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 423 | mutex_unlock(&sdp->sd_quota_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 424 | } |
| 425 | |
Steven Whitehouse | 1bf59bf | 2013-10-04 11:14:46 +0100 | [diff] [blame] | 426 | static int qd_check_sync(struct gfs2_sbd *sdp, struct gfs2_quota_data *qd, |
| 427 | u64 *sync_gen) |
| 428 | { |
| 429 | if (test_bit(QDF_LOCKED, &qd->qd_flags) || |
| 430 | !test_bit(QDF_CHANGE, &qd->qd_flags) || |
| 431 | (sync_gen && (qd->qd_sync_gen >= *sync_gen))) |
| 432 | return 0; |
| 433 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 434 | if (!lockref_get_not_dead(&qd->qd_lockref)) |
| 435 | return 0; |
Steven Whitehouse | 1bf59bf | 2013-10-04 11:14:46 +0100 | [diff] [blame] | 436 | |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 437 | list_move_tail(&qd->qd_list, &sdp->sd_quota_list); |
Steven Whitehouse | 1bf59bf | 2013-10-04 11:14:46 +0100 | [diff] [blame] | 438 | set_bit(QDF_LOCKED, &qd->qd_flags); |
Steven Whitehouse | 1bf59bf | 2013-10-04 11:14:46 +0100 | [diff] [blame] | 439 | qd->qd_change_sync = qd->qd_change; |
Steven Whitehouse | 2d9e723 | 2013-12-13 11:46:28 +0000 | [diff] [blame] | 440 | slot_hold(qd); |
Steven Whitehouse | 1bf59bf | 2013-10-04 11:14:46 +0100 | [diff] [blame] | 441 | return 1; |
| 442 | } |
| 443 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 444 | static int qd_fish(struct gfs2_sbd *sdp, struct gfs2_quota_data **qdp) |
| 445 | { |
| 446 | struct gfs2_quota_data *qd = NULL; |
| 447 | int error; |
| 448 | int found = 0; |
| 449 | |
| 450 | *qdp = NULL; |
| 451 | |
David Howells | bc98a42 | 2017-07-17 08:45:34 +0100 | [diff] [blame] | 452 | if (sb_rdonly(sdp->sd_vfs)) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 453 | return 0; |
| 454 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 455 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 456 | |
| 457 | list_for_each_entry(qd, &sdp->sd_quota_list, qd_list) { |
Steven Whitehouse | 1bf59bf | 2013-10-04 11:14:46 +0100 | [diff] [blame] | 458 | found = qd_check_sync(sdp, qd, &sdp->sd_quota_sync_gen); |
| 459 | if (found) |
| 460 | break; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 461 | } |
| 462 | |
| 463 | if (!found) |
| 464 | qd = NULL; |
| 465 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 466 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 467 | |
| 468 | if (qd) { |
| 469 | gfs2_assert_warn(sdp, qd->qd_change_sync); |
| 470 | error = bh_get(qd); |
| 471 | if (error) { |
| 472 | clear_bit(QDF_LOCKED, &qd->qd_flags); |
| 473 | slot_put(qd); |
| 474 | qd_put(qd); |
| 475 | return error; |
| 476 | } |
| 477 | } |
| 478 | |
| 479 | *qdp = qd; |
| 480 | |
| 481 | return 0; |
| 482 | } |
| 483 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 484 | static void qd_unlock(struct gfs2_quota_data *qd) |
| 485 | { |
Bob Peterson | 15562c4 | 2015-03-16 11:52:05 -0500 | [diff] [blame] | 486 | gfs2_assert_warn(qd->qd_gl->gl_name.ln_sbd, |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 487 | test_bit(QDF_LOCKED, &qd->qd_flags)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 488 | clear_bit(QDF_LOCKED, &qd->qd_flags); |
| 489 | bh_put(qd); |
| 490 | slot_put(qd); |
| 491 | qd_put(qd); |
| 492 | } |
| 493 | |
Eric W. Biederman | b59c8b6 | 2013-01-31 19:35:56 -0800 | [diff] [blame] | 494 | static int qdsb_get(struct gfs2_sbd *sdp, struct kqid qid, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 495 | struct gfs2_quota_data **qdp) |
| 496 | { |
| 497 | int error; |
| 498 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 499 | error = qd_get(sdp, qid, qdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 500 | if (error) |
| 501 | return error; |
| 502 | |
| 503 | error = slot_get(*qdp); |
| 504 | if (error) |
| 505 | goto fail; |
| 506 | |
| 507 | error = bh_get(*qdp); |
| 508 | if (error) |
| 509 | goto fail_slot; |
| 510 | |
| 511 | return 0; |
| 512 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 513 | fail_slot: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 514 | slot_put(*qdp); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 515 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 516 | qd_put(*qdp); |
| 517 | return error; |
| 518 | } |
| 519 | |
| 520 | static void qdsb_put(struct gfs2_quota_data *qd) |
| 521 | { |
| 522 | bh_put(qd); |
| 523 | slot_put(qd); |
| 524 | qd_put(qd); |
| 525 | } |
| 526 | |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 527 | /** |
| 528 | * gfs2_qa_alloc - make sure we have a quota allocations data structure, |
| 529 | * if necessary |
| 530 | * @ip: the inode for this reservation |
| 531 | */ |
| 532 | int gfs2_qa_alloc(struct gfs2_inode *ip) |
| 533 | { |
| 534 | int error = 0; |
| 535 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
| 536 | |
| 537 | if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF) |
| 538 | return 0; |
| 539 | |
| 540 | down_write(&ip->i_rw_mutex); |
| 541 | if (ip->i_qadata == NULL) { |
| 542 | ip->i_qadata = kmem_cache_zalloc(gfs2_qadata_cachep, GFP_NOFS); |
| 543 | if (!ip->i_qadata) |
| 544 | error = -ENOMEM; |
| 545 | } |
| 546 | up_write(&ip->i_rw_mutex); |
| 547 | return error; |
| 548 | } |
| 549 | |
Bob Peterson | a097dc7e | 2015-07-16 08:28:04 -0500 | [diff] [blame] | 550 | void gfs2_qa_delete(struct gfs2_inode *ip, atomic_t *wcount) |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 551 | { |
| 552 | down_write(&ip->i_rw_mutex); |
Bob Peterson | a097dc7e | 2015-07-16 08:28:04 -0500 | [diff] [blame] | 553 | if (ip->i_qadata && ((wcount == NULL) || (atomic_read(wcount) <= 1))) { |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 554 | kmem_cache_free(gfs2_qadata_cachep, ip->i_qadata); |
| 555 | ip->i_qadata = NULL; |
| 556 | } |
| 557 | up_write(&ip->i_rw_mutex); |
| 558 | } |
| 559 | |
Eric W. Biederman | 7c06b5d | 2013-01-31 20:27:54 -0800 | [diff] [blame] | 560 | int gfs2_quota_hold(struct gfs2_inode *ip, kuid_t uid, kgid_t gid) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 561 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 562 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 563 | struct gfs2_quota_data **qd; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 564 | int error; |
| 565 | |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 566 | if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF) |
| 567 | return 0; |
| 568 | |
| 569 | if (ip->i_qadata == NULL) { |
| 570 | error = gfs2_rsqa_alloc(ip); |
Andrew Price | aaaf68c | 2012-10-12 16:45:08 +0100 | [diff] [blame] | 571 | if (error) |
| 572 | return error; |
| 573 | } |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 574 | |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 575 | qd = ip->i_qadata->qa_qd; |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 576 | |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 577 | if (gfs2_assert_warn(sdp, !ip->i_qadata->qa_qd_num) || |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 578 | gfs2_assert_warn(sdp, !test_bit(GIF_QD_LOCKED, &ip->i_flags))) |
| 579 | return -EIO; |
| 580 | |
Eric W. Biederman | b59c8b6 | 2013-01-31 19:35:56 -0800 | [diff] [blame] | 581 | error = qdsb_get(sdp, make_kqid_uid(ip->i_inode.i_uid), qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 582 | if (error) |
| 583 | goto out; |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 584 | ip->i_qadata->qa_qd_num++; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 585 | qd++; |
| 586 | |
Eric W. Biederman | b59c8b6 | 2013-01-31 19:35:56 -0800 | [diff] [blame] | 587 | error = qdsb_get(sdp, make_kqid_gid(ip->i_inode.i_gid), qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 588 | if (error) |
| 589 | goto out; |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 590 | ip->i_qadata->qa_qd_num++; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 591 | qd++; |
| 592 | |
Eric W. Biederman | 6b24c0d | 2013-01-31 21:56:13 -0800 | [diff] [blame] | 593 | if (!uid_eq(uid, NO_UID_QUOTA_CHANGE) && |
| 594 | !uid_eq(uid, ip->i_inode.i_uid)) { |
Eric W. Biederman | b59c8b6 | 2013-01-31 19:35:56 -0800 | [diff] [blame] | 595 | error = qdsb_get(sdp, make_kqid_uid(uid), qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 596 | if (error) |
| 597 | goto out; |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 598 | ip->i_qadata->qa_qd_num++; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 599 | qd++; |
| 600 | } |
| 601 | |
Eric W. Biederman | 6b24c0d | 2013-01-31 21:56:13 -0800 | [diff] [blame] | 602 | if (!gid_eq(gid, NO_GID_QUOTA_CHANGE) && |
| 603 | !gid_eq(gid, ip->i_inode.i_gid)) { |
Eric W. Biederman | b59c8b6 | 2013-01-31 19:35:56 -0800 | [diff] [blame] | 604 | error = qdsb_get(sdp, make_kqid_gid(gid), qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 605 | if (error) |
| 606 | goto out; |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 607 | ip->i_qadata->qa_qd_num++; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 608 | qd++; |
| 609 | } |
| 610 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 611 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 612 | if (error) |
| 613 | gfs2_quota_unhold(ip); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 614 | return error; |
| 615 | } |
| 616 | |
| 617 | void gfs2_quota_unhold(struct gfs2_inode *ip) |
| 618 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 619 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
Bob Peterson | b58bf40 | 2015-07-24 09:45:43 -0500 | [diff] [blame] | 620 | u32 x; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 621 | |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 622 | if (ip->i_qadata == NULL) |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 623 | return; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 624 | gfs2_assert_warn(sdp, !test_bit(GIF_QD_LOCKED, &ip->i_flags)); |
| 625 | |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 626 | for (x = 0; x < ip->i_qadata->qa_qd_num; x++) { |
| 627 | qdsb_put(ip->i_qadata->qa_qd[x]); |
| 628 | ip->i_qadata->qa_qd[x] = NULL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 629 | } |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 630 | ip->i_qadata->qa_qd_num = 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 631 | } |
| 632 | |
| 633 | static int sort_qd(const void *a, const void *b) |
| 634 | { |
Steven Whitehouse | 48fac17 | 2006-09-05 15:17:12 -0400 | [diff] [blame] | 635 | const struct gfs2_quota_data *qd_a = *(const struct gfs2_quota_data **)a; |
| 636 | const struct gfs2_quota_data *qd_b = *(const struct gfs2_quota_data **)b; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 637 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 638 | if (qid_lt(qd_a->qd_id, qd_b->qd_id)) |
Steven Whitehouse | 48fac17 | 2006-09-05 15:17:12 -0400 | [diff] [blame] | 639 | return -1; |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 640 | if (qid_lt(qd_b->qd_id, qd_a->qd_id)) |
Steven Whitehouse | 48fac17 | 2006-09-05 15:17:12 -0400 | [diff] [blame] | 641 | return 1; |
Steven Whitehouse | 48fac17 | 2006-09-05 15:17:12 -0400 | [diff] [blame] | 642 | return 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 643 | } |
| 644 | |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 645 | static void do_qc(struct gfs2_quota_data *qd, s64 change) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 646 | { |
Bob Peterson | 15562c4 | 2015-03-16 11:52:05 -0500 | [diff] [blame] | 647 | struct gfs2_sbd *sdp = qd->qd_gl->gl_name.ln_sbd; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 648 | struct gfs2_inode *ip = GFS2_I(sdp->sd_qc_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 649 | struct gfs2_quota_change *qc = qd->qd_bh_qc; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 650 | s64 x; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 651 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 652 | mutex_lock(&sdp->sd_quota_mutex); |
Steven Whitehouse | 350a9b0 | 2012-12-14 12:36:02 +0000 | [diff] [blame] | 653 | gfs2_trans_add_meta(ip->i_gl, qd->qd_bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 654 | |
| 655 | if (!test_bit(QDF_CHANGE, &qd->qd_flags)) { |
| 656 | qc->qc_change = 0; |
| 657 | qc->qc_flags = 0; |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 658 | if (qd->qd_id.type == USRQUOTA) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 659 | qc->qc_flags = cpu_to_be32(GFS2_QCF_USER); |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 660 | qc->qc_id = cpu_to_be32(from_kqid(&init_user_ns, qd->qd_id)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 661 | } |
| 662 | |
Al Viro | b44b84d | 2006-10-14 10:46:30 -0400 | [diff] [blame] | 663 | x = be64_to_cpu(qc->qc_change) + change; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 664 | qc->qc_change = cpu_to_be64(x); |
| 665 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 666 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 667 | qd->qd_change = x; |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 668 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 669 | |
| 670 | if (!x) { |
| 671 | gfs2_assert_warn(sdp, test_bit(QDF_CHANGE, &qd->qd_flags)); |
| 672 | clear_bit(QDF_CHANGE, &qd->qd_flags); |
| 673 | qc->qc_flags = 0; |
| 674 | qc->qc_id = 0; |
| 675 | slot_put(qd); |
| 676 | qd_put(qd); |
| 677 | } else if (!test_and_set_bit(QDF_CHANGE, &qd->qd_flags)) { |
| 678 | qd_hold(qd); |
| 679 | slot_hold(qd); |
| 680 | } |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 681 | |
Abhi Das | 9cde289 | 2015-06-02 11:03:04 -0500 | [diff] [blame] | 682 | if (change < 0) /* Reset quiet flag if we freed some blocks */ |
| 683 | clear_bit(QDF_QMSG_QUIET, &qd->qd_flags); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 684 | mutex_unlock(&sdp->sd_quota_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 685 | } |
| 686 | |
Abhi Das | 39a7258 | 2015-06-02 11:02:24 -0500 | [diff] [blame] | 687 | static int gfs2_write_buf_to_page(struct gfs2_inode *ip, unsigned long index, |
| 688 | unsigned off, void *buf, unsigned bytes) |
| 689 | { |
| 690 | struct inode *inode = &ip->i_inode; |
| 691 | struct gfs2_sbd *sdp = GFS2_SB(inode); |
| 692 | struct address_space *mapping = inode->i_mapping; |
| 693 | struct page *page; |
| 694 | struct buffer_head *bh; |
| 695 | void *kaddr; |
| 696 | u64 blk; |
| 697 | unsigned bsize = sdp->sd_sb.sb_bsize, bnum = 0, boff = 0; |
| 698 | unsigned to_write = bytes, pg_off = off; |
| 699 | int done = 0; |
| 700 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 701 | blk = index << (PAGE_SHIFT - sdp->sd_sb.sb_bsize_shift); |
Abhi Das | 39a7258 | 2015-06-02 11:02:24 -0500 | [diff] [blame] | 702 | boff = off % bsize; |
| 703 | |
| 704 | page = find_or_create_page(mapping, index, GFP_NOFS); |
| 705 | if (!page) |
| 706 | return -ENOMEM; |
| 707 | if (!page_has_buffers(page)) |
| 708 | create_empty_buffers(page, bsize, 0); |
| 709 | |
| 710 | bh = page_buffers(page); |
| 711 | while (!done) { |
| 712 | /* Find the beginning block within the page */ |
| 713 | if (pg_off >= ((bnum * bsize) + bsize)) { |
| 714 | bh = bh->b_this_page; |
| 715 | bnum++; |
| 716 | blk++; |
| 717 | continue; |
| 718 | } |
| 719 | if (!buffer_mapped(bh)) { |
| 720 | gfs2_block_map(inode, blk, bh, 1); |
| 721 | if (!buffer_mapped(bh)) |
| 722 | goto unlock_out; |
| 723 | /* If it's a newly allocated disk block, zero it */ |
| 724 | if (buffer_new(bh)) |
| 725 | zero_user(page, bnum * bsize, bh->b_size); |
| 726 | } |
| 727 | if (PageUptodate(page)) |
| 728 | set_buffer_uptodate(bh); |
| 729 | if (!buffer_uptodate(bh)) { |
Coly Li | e477b24 | 2017-07-21 07:48:22 -0500 | [diff] [blame] | 730 | ll_rw_block(REQ_OP_READ, REQ_META | REQ_PRIO, 1, &bh); |
Abhi Das | 39a7258 | 2015-06-02 11:02:24 -0500 | [diff] [blame] | 731 | wait_on_buffer(bh); |
| 732 | if (!buffer_uptodate(bh)) |
| 733 | goto unlock_out; |
| 734 | } |
Andreas Gruenbacher | 845802b | 2018-06-04 07:50:16 -0500 | [diff] [blame] | 735 | if (gfs2_is_jdata(ip)) |
| 736 | gfs2_trans_add_data(ip->i_gl, bh); |
| 737 | else |
| 738 | gfs2_ordered_add_inode(ip); |
Abhi Das | 39a7258 | 2015-06-02 11:02:24 -0500 | [diff] [blame] | 739 | |
| 740 | /* If we need to write to the next block as well */ |
| 741 | if (to_write > (bsize - boff)) { |
| 742 | pg_off += (bsize - boff); |
| 743 | to_write -= (bsize - boff); |
| 744 | boff = pg_off % bsize; |
| 745 | continue; |
| 746 | } |
| 747 | done = 1; |
| 748 | } |
| 749 | |
| 750 | /* Write to the page, now that we have setup the buffer(s) */ |
| 751 | kaddr = kmap_atomic(page); |
| 752 | memcpy(kaddr + off, buf, bytes); |
| 753 | flush_dcache_page(page); |
| 754 | kunmap_atomic(kaddr); |
| 755 | unlock_page(page); |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 756 | put_page(page); |
Abhi Das | 39a7258 | 2015-06-02 11:02:24 -0500 | [diff] [blame] | 757 | |
| 758 | return 0; |
| 759 | |
| 760 | unlock_out: |
| 761 | unlock_page(page); |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 762 | put_page(page); |
Abhi Das | 39a7258 | 2015-06-02 11:02:24 -0500 | [diff] [blame] | 763 | return -EIO; |
| 764 | } |
| 765 | |
| 766 | static int gfs2_write_disk_quota(struct gfs2_inode *ip, struct gfs2_quota *qp, |
| 767 | loff_t loc) |
| 768 | { |
| 769 | unsigned long pg_beg; |
| 770 | unsigned pg_off, nbytes, overflow = 0; |
| 771 | int pg_oflow = 0, error; |
| 772 | void *ptr; |
| 773 | |
| 774 | nbytes = sizeof(struct gfs2_quota); |
| 775 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 776 | pg_beg = loc >> PAGE_SHIFT; |
Andreas Gruenbacher | 45eb050 | 2019-09-02 17:31:06 +0100 | [diff] [blame] | 777 | pg_off = offset_in_page(loc); |
Abhi Das | 39a7258 | 2015-06-02 11:02:24 -0500 | [diff] [blame] | 778 | |
| 779 | /* If the quota straddles a page boundary, split the write in two */ |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 780 | if ((pg_off + nbytes) > PAGE_SIZE) { |
Abhi Das | 39a7258 | 2015-06-02 11:02:24 -0500 | [diff] [blame] | 781 | pg_oflow = 1; |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 782 | overflow = (pg_off + nbytes) - PAGE_SIZE; |
Abhi Das | 39a7258 | 2015-06-02 11:02:24 -0500 | [diff] [blame] | 783 | } |
| 784 | |
| 785 | ptr = qp; |
| 786 | error = gfs2_write_buf_to_page(ip, pg_beg, pg_off, ptr, |
| 787 | nbytes - overflow); |
| 788 | /* If there's an overflow, write the remaining bytes to the next page */ |
| 789 | if (!error && pg_oflow) |
| 790 | error = gfs2_write_buf_to_page(ip, pg_beg + 1, 0, |
| 791 | ptr + nbytes - overflow, |
| 792 | overflow); |
| 793 | return error; |
| 794 | } |
| 795 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 796 | /** |
Steven Whitehouse | 1e72c0f | 2009-09-15 20:42:56 +0100 | [diff] [blame] | 797 | * gfs2_adjust_quota - adjust record of current block usage |
| 798 | * @ip: The quota inode |
| 799 | * @loc: Offset of the entry in the quota file |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 800 | * @change: The amount of usage change to record |
Steven Whitehouse | 1e72c0f | 2009-09-15 20:42:56 +0100 | [diff] [blame] | 801 | * @qd: The quota data |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 802 | * @fdq: The updated limits to record |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 803 | * |
| 804 | * This function was mostly borrowed from gfs2_block_truncate_page which was |
| 805 | * in turn mostly borrowed from ext3 |
Steven Whitehouse | 1e72c0f | 2009-09-15 20:42:56 +0100 | [diff] [blame] | 806 | * |
| 807 | * Returns: 0 or -ve on error |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 808 | */ |
Steven Whitehouse | 1e72c0f | 2009-09-15 20:42:56 +0100 | [diff] [blame] | 809 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 810 | static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc, |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 811 | s64 change, struct gfs2_quota_data *qd, |
Jan Kara | 14bf61f | 2014-10-09 16:03:13 +0200 | [diff] [blame] | 812 | struct qc_dqblk *fdq) |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 813 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 814 | struct inode *inode = &ip->i_inode; |
Abhijith Das | 14870b4 | 2010-11-18 11:24:24 -0500 | [diff] [blame] | 815 | struct gfs2_sbd *sdp = GFS2_SB(inode); |
Al Viro | 951b4bd | 2013-06-02 19:53:40 -0400 | [diff] [blame] | 816 | struct gfs2_quota q; |
Abhi Das | 39a7258 | 2015-06-02 11:02:24 -0500 | [diff] [blame] | 817 | int err; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 818 | u64 size; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 819 | |
Steven Whitehouse | 891a8e9 | 2011-09-19 10:25:49 +0100 | [diff] [blame] | 820 | if (gfs2_is_stuffed(ip)) { |
| 821 | err = gfs2_unstuff_dinode(ip, NULL); |
| 822 | if (err) |
| 823 | return err; |
| 824 | } |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 825 | |
| 826 | memset(&q, 0, sizeof(struct gfs2_quota)); |
Andrew Price | 4306629 | 2012-04-16 16:40:55 +0100 | [diff] [blame] | 827 | err = gfs2_internal_read(ip, (char *)&q, &loc, sizeof(q)); |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 828 | if (err < 0) |
| 829 | return err; |
| 830 | |
Abhi Das | 39a7258 | 2015-06-02 11:02:24 -0500 | [diff] [blame] | 831 | loc -= sizeof(q); /* gfs2_internal_read would've advanced the loc ptr */ |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 832 | err = -EIO; |
Al Viro | 951b4bd | 2013-06-02 19:53:40 -0400 | [diff] [blame] | 833 | be64_add_cpu(&q.qu_value, change); |
Abhi Das | 1bdf453 | 2015-06-08 11:20:50 -0500 | [diff] [blame] | 834 | if (((s64)be64_to_cpu(q.qu_value)) < 0) |
Abhi Das | 39a7258 | 2015-06-02 11:02:24 -0500 | [diff] [blame] | 835 | q.qu_value = 0; /* Never go negative on quota usage */ |
Al Viro | 951b4bd | 2013-06-02 19:53:40 -0400 | [diff] [blame] | 836 | qd->qd_qb.qb_value = q.qu_value; |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 837 | if (fdq) { |
Jan Kara | 14bf61f | 2014-10-09 16:03:13 +0200 | [diff] [blame] | 838 | if (fdq->d_fieldmask & QC_SPC_SOFT) { |
| 839 | q.qu_warn = cpu_to_be64(fdq->d_spc_softlimit >> sdp->sd_sb.sb_bsize_shift); |
Al Viro | 951b4bd | 2013-06-02 19:53:40 -0400 | [diff] [blame] | 840 | qd->qd_qb.qb_warn = q.qu_warn; |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 841 | } |
Jan Kara | 14bf61f | 2014-10-09 16:03:13 +0200 | [diff] [blame] | 842 | if (fdq->d_fieldmask & QC_SPC_HARD) { |
| 843 | q.qu_limit = cpu_to_be64(fdq->d_spc_hardlimit >> sdp->sd_sb.sb_bsize_shift); |
Al Viro | 951b4bd | 2013-06-02 19:53:40 -0400 | [diff] [blame] | 844 | qd->qd_qb.qb_limit = q.qu_limit; |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 845 | } |
Jan Kara | 14bf61f | 2014-10-09 16:03:13 +0200 | [diff] [blame] | 846 | if (fdq->d_fieldmask & QC_SPACE) { |
| 847 | q.qu_value = cpu_to_be64(fdq->d_space >> sdp->sd_sb.sb_bsize_shift); |
Al Viro | 951b4bd | 2013-06-02 19:53:40 -0400 | [diff] [blame] | 848 | qd->qd_qb.qb_value = q.qu_value; |
Abhijith Das | 802ec9b | 2010-11-18 11:26:46 -0500 | [diff] [blame] | 849 | } |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 850 | } |
| 851 | |
Abhi Das | 39a7258 | 2015-06-02 11:02:24 -0500 | [diff] [blame] | 852 | err = gfs2_write_disk_quota(ip, &q, loc); |
| 853 | if (!err) { |
| 854 | size = loc + sizeof(struct gfs2_quota); |
| 855 | if (size > inode->i_size) |
| 856 | i_size_write(inode, size); |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 857 | inode->i_mtime = inode->i_atime = current_time(inode); |
Abhi Das | 39a7258 | 2015-06-02 11:02:24 -0500 | [diff] [blame] | 858 | mark_inode_dirty(inode); |
| 859 | set_bit(QDF_REFRESH, &qd->qd_flags); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 860 | } |
| 861 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 862 | return err; |
| 863 | } |
| 864 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 865 | static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda) |
| 866 | { |
Bob Peterson | 15562c4 | 2015-03-16 11:52:05 -0500 | [diff] [blame] | 867 | struct gfs2_sbd *sdp = (*qda)->qd_gl->gl_name.ln_sbd; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 868 | struct gfs2_inode *ip = GFS2_I(sdp->sd_quota_inode); |
Steven Whitehouse | 7b9cff4 | 2013-10-02 11:13:25 +0100 | [diff] [blame] | 869 | struct gfs2_alloc_parms ap = { .aflags = 0, }; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 870 | unsigned int data_blocks, ind_blocks; |
| 871 | struct gfs2_holder *ghs, i_gh; |
| 872 | unsigned int qx, x; |
| 873 | struct gfs2_quota_data *qd; |
Steven Whitehouse | 71f890f | 2012-07-30 14:53:19 +0100 | [diff] [blame] | 874 | unsigned reserved; |
Steven Whitehouse | f42faf4 | 2006-01-30 18:34:10 +0000 | [diff] [blame] | 875 | loff_t offset; |
Abhijith Das | 20b95bf | 2008-03-06 17:43:52 -0600 | [diff] [blame] | 876 | unsigned int nalloc = 0, blocks; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 877 | int error; |
| 878 | |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 879 | error = gfs2_rsqa_alloc(ip); |
Bob Peterson | 0a305e4 | 2012-06-06 11:17:59 +0100 | [diff] [blame] | 880 | if (error) |
| 881 | return error; |
| 882 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 883 | gfs2_write_calc_reserv(ip, sizeof(struct gfs2_quota), |
| 884 | &data_blocks, &ind_blocks); |
| 885 | |
Kees Cook | 6da2ec5 | 2018-06-12 13:55:00 -0700 | [diff] [blame] | 886 | ghs = kmalloc_array(num_qd, sizeof(struct gfs2_holder), GFP_NOFS); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 887 | if (!ghs) |
| 888 | return -ENOMEM; |
| 889 | |
| 890 | sort(qda, num_qd, sizeof(struct gfs2_quota_data *), sort_qd, NULL); |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 891 | inode_lock(&ip->i_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 892 | for (qx = 0; qx < num_qd; qx++) { |
Steven Whitehouse | 1e72c0f | 2009-09-15 20:42:56 +0100 | [diff] [blame] | 893 | error = gfs2_glock_nq_init(qda[qx]->qd_gl, LM_ST_EXCLUSIVE, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 894 | GL_NOCACHE, &ghs[qx]); |
| 895 | if (error) |
| 896 | goto out; |
| 897 | } |
| 898 | |
| 899 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh); |
| 900 | if (error) |
| 901 | goto out; |
| 902 | |
| 903 | for (x = 0; x < num_qd; x++) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 904 | offset = qd2offset(qda[x]); |
Bob Peterson | 461cb41 | 2010-06-24 19:21:20 -0400 | [diff] [blame] | 905 | if (gfs2_write_alloc_required(ip, offset, |
| 906 | sizeof(struct gfs2_quota))) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 907 | nalloc++; |
| 908 | } |
| 909 | |
Abhijith Das | 20b95bf | 2008-03-06 17:43:52 -0600 | [diff] [blame] | 910 | /* |
| 911 | * 1 blk for unstuffing inode if stuffed. We add this extra |
| 912 | * block to the reservation unconditionally. If the inode |
| 913 | * doesn't need unstuffing, the block will be released to the |
| 914 | * rgrp since it won't be allocated during the transaction |
| 915 | */ |
Abhijith Das | 7e619bc | 2010-05-07 17:50:18 -0400 | [diff] [blame] | 916 | /* +3 in the end for unstuffing block, inode size update block |
| 917 | * and another block in case quota straddles page boundary and |
| 918 | * two blocks need to be updated instead of 1 */ |
| 919 | blocks = num_qd * data_blocks + RES_DINODE + num_qd + 3; |
Abhijith Das | 20b95bf | 2008-03-06 17:43:52 -0600 | [diff] [blame] | 920 | |
Steven Whitehouse | 71f890f | 2012-07-30 14:53:19 +0100 | [diff] [blame] | 921 | reserved = 1 + (nalloc * (data_blocks + ind_blocks)); |
Steven Whitehouse | 7b9cff4 | 2013-10-02 11:13:25 +0100 | [diff] [blame] | 922 | ap.target = reserved; |
| 923 | error = gfs2_inplace_reserve(ip, &ap); |
Abhijith Das | 20b95bf | 2008-03-06 17:43:52 -0600 | [diff] [blame] | 924 | if (error) |
| 925 | goto out_alloc; |
| 926 | |
| 927 | if (nalloc) |
Steven Whitehouse | 71f890f | 2012-07-30 14:53:19 +0100 | [diff] [blame] | 928 | blocks += gfs2_rg_blocks(ip, reserved) + nalloc * ind_blocks + RES_STATFS; |
Abhijith Das | 20b95bf | 2008-03-06 17:43:52 -0600 | [diff] [blame] | 929 | |
| 930 | error = gfs2_trans_begin(sdp, blocks, 0); |
| 931 | if (error) |
| 932 | goto out_ipres; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 933 | |
| 934 | for (x = 0; x < num_qd; x++) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 935 | qd = qda[x]; |
| 936 | offset = qd2offset(qd); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 937 | error = gfs2_adjust_quota(ip, offset, qd->qd_change_sync, qd, NULL); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 938 | if (error) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 939 | goto out_end_trans; |
| 940 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 941 | do_qc(qd, -qd->qd_change_sync); |
Abhijith Das | 662e3a5 | 2011-03-08 10:40:42 -0500 | [diff] [blame] | 942 | set_bit(QDF_REFRESH, &qd->qd_flags); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 943 | } |
| 944 | |
| 945 | error = 0; |
| 946 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 947 | out_end_trans: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 948 | gfs2_trans_end(sdp); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 949 | out_ipres: |
Abhijith Das | 20b95bf | 2008-03-06 17:43:52 -0600 | [diff] [blame] | 950 | gfs2_inplace_release(ip); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 951 | out_alloc: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 952 | gfs2_glock_dq_uninit(&i_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 953 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 954 | while (qx--) |
| 955 | gfs2_glock_dq_uninit(&ghs[qx]); |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 956 | inode_unlock(&ip->i_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 957 | kfree(ghs); |
Bob Peterson | c1696fb | 2018-01-17 00:01:33 +0100 | [diff] [blame] | 958 | gfs2_log_flush(ip->i_gl->gl_name.ln_sbd, ip->i_gl, |
Bob Peterson | 805c0907 | 2018-01-08 10:34:17 -0500 | [diff] [blame] | 959 | GFS2_LOG_HEAD_FLUSH_NORMAL | GFS2_LFC_DO_SYNC); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 960 | return error; |
| 961 | } |
| 962 | |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 963 | static int update_qd(struct gfs2_sbd *sdp, struct gfs2_quota_data *qd) |
| 964 | { |
| 965 | struct gfs2_inode *ip = GFS2_I(sdp->sd_quota_inode); |
| 966 | struct gfs2_quota q; |
| 967 | struct gfs2_quota_lvb *qlvb; |
| 968 | loff_t pos; |
| 969 | int error; |
| 970 | |
| 971 | memset(&q, 0, sizeof(struct gfs2_quota)); |
| 972 | pos = qd2offset(qd); |
Andrew Price | 4306629 | 2012-04-16 16:40:55 +0100 | [diff] [blame] | 973 | error = gfs2_internal_read(ip, (char *)&q, &pos, sizeof(q)); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 974 | if (error < 0) |
| 975 | return error; |
| 976 | |
David Teigland | 4e2f884 | 2012-11-14 13:47:37 -0500 | [diff] [blame] | 977 | qlvb = (struct gfs2_quota_lvb *)qd->qd_gl->gl_lksb.sb_lvbptr; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 978 | qlvb->qb_magic = cpu_to_be32(GFS2_MAGIC); |
| 979 | qlvb->__pad = 0; |
| 980 | qlvb->qb_limit = q.qu_limit; |
| 981 | qlvb->qb_warn = q.qu_warn; |
| 982 | qlvb->qb_value = q.qu_value; |
| 983 | qd->qd_qb = *qlvb; |
| 984 | |
| 985 | return 0; |
| 986 | } |
| 987 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 988 | static int do_glock(struct gfs2_quota_data *qd, int force_refresh, |
| 989 | struct gfs2_holder *q_gh) |
| 990 | { |
Bob Peterson | 15562c4 | 2015-03-16 11:52:05 -0500 | [diff] [blame] | 991 | struct gfs2_sbd *sdp = qd->qd_gl->gl_name.ln_sbd; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 992 | struct gfs2_inode *ip = GFS2_I(sdp->sd_quota_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 993 | struct gfs2_holder i_gh; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 994 | int error; |
| 995 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 996 | restart: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 997 | error = gfs2_glock_nq_init(qd->qd_gl, LM_ST_SHARED, 0, q_gh); |
| 998 | if (error) |
| 999 | return error; |
| 1000 | |
Abhi Das | 3013317 | 2015-04-08 09:03:56 -0500 | [diff] [blame] | 1001 | if (test_and_clear_bit(QDF_REFRESH, &qd->qd_flags)) |
| 1002 | force_refresh = FORCE; |
| 1003 | |
David Teigland | 4e2f884 | 2012-11-14 13:47:37 -0500 | [diff] [blame] | 1004 | qd->qd_qb = *(struct gfs2_quota_lvb *)qd->qd_gl->gl_lksb.sb_lvbptr; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1005 | |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 1006 | if (force_refresh || qd->qd_qb.qb_magic != cpu_to_be32(GFS2_MAGIC)) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1007 | gfs2_glock_dq_uninit(q_gh); |
Steven Whitehouse | 91094d0 | 2009-09-11 15:21:56 +0100 | [diff] [blame] | 1008 | error = gfs2_glock_nq_init(qd->qd_gl, LM_ST_EXCLUSIVE, |
| 1009 | GL_NOCACHE, q_gh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1010 | if (error) |
| 1011 | return error; |
| 1012 | |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 1013 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &i_gh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1014 | if (error) |
| 1015 | goto fail; |
| 1016 | |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1017 | error = update_qd(sdp, qd); |
| 1018 | if (error) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1019 | goto fail_gunlock; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1020 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1021 | gfs2_glock_dq_uninit(&i_gh); |
Steven Whitehouse | 91094d0 | 2009-09-11 15:21:56 +0100 | [diff] [blame] | 1022 | gfs2_glock_dq_uninit(q_gh); |
| 1023 | force_refresh = 0; |
| 1024 | goto restart; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1025 | } |
| 1026 | |
| 1027 | return 0; |
| 1028 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1029 | fail_gunlock: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1030 | gfs2_glock_dq_uninit(&i_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1031 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1032 | gfs2_glock_dq_uninit(q_gh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1033 | return error; |
| 1034 | } |
| 1035 | |
Eric W. Biederman | 7c06b5d | 2013-01-31 20:27:54 -0800 | [diff] [blame] | 1036 | int gfs2_quota_lock(struct gfs2_inode *ip, kuid_t uid, kgid_t gid) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1037 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 1038 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
Abhijith Das | 662e3a5 | 2011-03-08 10:40:42 -0500 | [diff] [blame] | 1039 | struct gfs2_quota_data *qd; |
Bob Peterson | b58bf40 | 2015-07-24 09:45:43 -0500 | [diff] [blame] | 1040 | u32 x; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1041 | int error = 0; |
| 1042 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1043 | if (capable(CAP_SYS_RESOURCE) || |
| 1044 | sdp->sd_args.ar_quota != GFS2_QUOTA_ON) |
| 1045 | return 0; |
| 1046 | |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 1047 | error = gfs2_quota_hold(ip, uid, gid); |
| 1048 | if (error) |
| 1049 | return error; |
| 1050 | |
| 1051 | sort(ip->i_qadata->qa_qd, ip->i_qadata->qa_qd_num, |
Bob Peterson | 5407e24 | 2012-05-18 09:28:23 -0400 | [diff] [blame] | 1052 | sizeof(struct gfs2_quota_data *), sort_qd, NULL); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1053 | |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 1054 | for (x = 0; x < ip->i_qadata->qa_qd_num; x++) { |
| 1055 | qd = ip->i_qadata->qa_qd[x]; |
| 1056 | error = do_glock(qd, NO_FORCE, &ip->i_qadata->qa_qd_ghs[x]); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1057 | if (error) |
| 1058 | break; |
| 1059 | } |
| 1060 | |
| 1061 | if (!error) |
| 1062 | set_bit(GIF_QD_LOCKED, &ip->i_flags); |
| 1063 | else { |
| 1064 | while (x--) |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 1065 | gfs2_glock_dq_uninit(&ip->i_qadata->qa_qd_ghs[x]); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1066 | gfs2_quota_unhold(ip); |
| 1067 | } |
| 1068 | |
| 1069 | return error; |
| 1070 | } |
| 1071 | |
| 1072 | static int need_sync(struct gfs2_quota_data *qd) |
| 1073 | { |
Bob Peterson | 15562c4 | 2015-03-16 11:52:05 -0500 | [diff] [blame] | 1074 | struct gfs2_sbd *sdp = qd->qd_gl->gl_name.ln_sbd; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1075 | struct gfs2_tune *gt = &sdp->sd_tune; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 1076 | s64 value; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1077 | unsigned int num, den; |
| 1078 | int do_sync = 1; |
| 1079 | |
| 1080 | if (!qd->qd_qb.qb_limit) |
| 1081 | return 0; |
| 1082 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1083 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1084 | value = qd->qd_change; |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1085 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1086 | |
| 1087 | spin_lock(>->gt_spin); |
| 1088 | num = gt->gt_quota_scale_num; |
| 1089 | den = gt->gt_quota_scale_den; |
| 1090 | spin_unlock(>->gt_spin); |
| 1091 | |
| 1092 | if (value < 0) |
| 1093 | do_sync = 0; |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 1094 | else if ((s64)be64_to_cpu(qd->qd_qb.qb_value) >= |
| 1095 | (s64)be64_to_cpu(qd->qd_qb.qb_limit)) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1096 | do_sync = 0; |
| 1097 | else { |
| 1098 | value *= gfs2_jindex_size(sdp) * num; |
David Howells | 4abaca17 | 2008-07-11 14:39:56 +0100 | [diff] [blame] | 1099 | value = div_s64(value, den); |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 1100 | value += (s64)be64_to_cpu(qd->qd_qb.qb_value); |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 1101 | if (value < (s64)be64_to_cpu(qd->qd_qb.qb_limit)) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1102 | do_sync = 0; |
| 1103 | } |
| 1104 | |
| 1105 | return do_sync; |
| 1106 | } |
| 1107 | |
| 1108 | void gfs2_quota_unlock(struct gfs2_inode *ip) |
| 1109 | { |
Steven Whitehouse | aabd7c7 | 2013-10-04 11:31:05 +0100 | [diff] [blame] | 1110 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1111 | struct gfs2_quota_data *qda[4]; |
| 1112 | unsigned int count = 0; |
Bob Peterson | b58bf40 | 2015-07-24 09:45:43 -0500 | [diff] [blame] | 1113 | u32 x; |
Steven Whitehouse | aabd7c7 | 2013-10-04 11:31:05 +0100 | [diff] [blame] | 1114 | int found; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1115 | |
| 1116 | if (!test_and_clear_bit(GIF_QD_LOCKED, &ip->i_flags)) |
| 1117 | goto out; |
| 1118 | |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 1119 | for (x = 0; x < ip->i_qadata->qa_qd_num; x++) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1120 | struct gfs2_quota_data *qd; |
| 1121 | int sync; |
| 1122 | |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 1123 | qd = ip->i_qadata->qa_qd[x]; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1124 | sync = need_sync(qd); |
| 1125 | |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 1126 | gfs2_glock_dq_uninit(&ip->i_qadata->qa_qd_ghs[x]); |
Steven Whitehouse | aabd7c7 | 2013-10-04 11:31:05 +0100 | [diff] [blame] | 1127 | if (!sync) |
| 1128 | continue; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1129 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1130 | spin_lock(&qd_lock); |
Steven Whitehouse | aabd7c7 | 2013-10-04 11:31:05 +0100 | [diff] [blame] | 1131 | found = qd_check_sync(sdp, qd, NULL); |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1132 | spin_unlock(&qd_lock); |
Steven Whitehouse | aabd7c7 | 2013-10-04 11:31:05 +0100 | [diff] [blame] | 1133 | |
| 1134 | if (!found) |
| 1135 | continue; |
| 1136 | |
| 1137 | gfs2_assert_warn(sdp, qd->qd_change_sync); |
| 1138 | if (bh_get(qd)) { |
| 1139 | clear_bit(QDF_LOCKED, &qd->qd_flags); |
| 1140 | slot_put(qd); |
| 1141 | qd_put(qd); |
| 1142 | continue; |
| 1143 | } |
| 1144 | |
| 1145 | qda[count++] = qd; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1146 | } |
| 1147 | |
| 1148 | if (count) { |
| 1149 | do_sync(count, qda); |
| 1150 | for (x = 0; x < count; x++) |
| 1151 | qd_unlock(qda[x]); |
| 1152 | } |
| 1153 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1154 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1155 | gfs2_quota_unhold(ip); |
| 1156 | } |
| 1157 | |
| 1158 | #define MAX_LINE 256 |
| 1159 | |
| 1160 | static int print_message(struct gfs2_quota_data *qd, char *type) |
| 1161 | { |
Bob Peterson | 15562c4 | 2015-03-16 11:52:05 -0500 | [diff] [blame] | 1162 | struct gfs2_sbd *sdp = qd->qd_gl->gl_name.ln_sbd; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1163 | |
Joe Perches | 8382e26 | 2014-03-06 12:10:46 -0800 | [diff] [blame] | 1164 | fs_info(sdp, "quota %s for %s %u\n", |
| 1165 | type, |
Joe Perches | d77d1b5 | 2014-03-06 12:10:45 -0800 | [diff] [blame] | 1166 | (qd->qd_id.type == USRQUOTA) ? "user" : "group", |
| 1167 | from_kqid(&init_user_ns, qd->qd_id)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1168 | |
| 1169 | return 0; |
| 1170 | } |
| 1171 | |
Abhi Das | 25435e5 | 2015-03-18 12:04:37 -0500 | [diff] [blame] | 1172 | /** |
| 1173 | * gfs2_quota_check - check if allocating new blocks will exceed quota |
| 1174 | * @ip: The inode for which this check is being performed |
| 1175 | * @uid: The uid to check against |
| 1176 | * @gid: The gid to check against |
| 1177 | * @ap: The allocation parameters. ap->target contains the requested |
| 1178 | * blocks. ap->min_target, if set, contains the minimum blks |
| 1179 | * requested. |
| 1180 | * |
| 1181 | * Returns: 0 on success. |
| 1182 | * min_req = ap->min_target ? ap->min_target : ap->target; |
Andreas Gruenbacher | 243fea4 | 2018-10-02 10:22:41 +0100 | [diff] [blame] | 1183 | * quota must allow at least min_req blks for success and |
Abhi Das | 25435e5 | 2015-03-18 12:04:37 -0500 | [diff] [blame] | 1184 | * ap->allowed is set to the number of blocks allowed |
| 1185 | * |
| 1186 | * -EDQUOT otherwise, quota violation. ap->allowed is set to number |
| 1187 | * of blocks available. |
| 1188 | */ |
Abhi Das | b8fbf47 | 2015-03-18 12:03:41 -0500 | [diff] [blame] | 1189 | int gfs2_quota_check(struct gfs2_inode *ip, kuid_t uid, kgid_t gid, |
| 1190 | struct gfs2_alloc_parms *ap) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1191 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 1192 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1193 | struct gfs2_quota_data *qd; |
Abhi Das | 25435e5 | 2015-03-18 12:04:37 -0500 | [diff] [blame] | 1194 | s64 value, warn, limit; |
Bob Peterson | b58bf40 | 2015-07-24 09:45:43 -0500 | [diff] [blame] | 1195 | u32 x; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1196 | int error = 0; |
| 1197 | |
Abhi Das | 25435e5 | 2015-03-18 12:04:37 -0500 | [diff] [blame] | 1198 | ap->allowed = UINT_MAX; /* Assume we are permitted a whole lot */ |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1199 | if (!test_bit(GIF_QD_LOCKED, &ip->i_flags)) |
| 1200 | return 0; |
| 1201 | |
| 1202 | if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON) |
| 1203 | return 0; |
| 1204 | |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 1205 | for (x = 0; x < ip->i_qadata->qa_qd_num; x++) { |
| 1206 | qd = ip->i_qadata->qa_qd[x]; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1207 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 1208 | if (!(qid_eq(qd->qd_id, make_kqid_uid(uid)) || |
| 1209 | qid_eq(qd->qd_id, make_kqid_gid(gid)))) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1210 | continue; |
| 1211 | |
Abhi Das | 25435e5 | 2015-03-18 12:04:37 -0500 | [diff] [blame] | 1212 | warn = (s64)be64_to_cpu(qd->qd_qb.qb_warn); |
| 1213 | limit = (s64)be64_to_cpu(qd->qd_qb.qb_limit); |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 1214 | value = (s64)be64_to_cpu(qd->qd_qb.qb_value); |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1215 | spin_lock(&qd_lock); |
Abhi Das | 25435e5 | 2015-03-18 12:04:37 -0500 | [diff] [blame] | 1216 | value += qd->qd_change; |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1217 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1218 | |
Abhi Das | 25435e5 | 2015-03-18 12:04:37 -0500 | [diff] [blame] | 1219 | if (limit > 0 && (limit - value) < ap->allowed) |
| 1220 | ap->allowed = limit - value; |
| 1221 | /* If we can't meet the target */ |
| 1222 | if (limit && limit < (value + (s64)ap->target)) { |
| 1223 | /* If no min_target specified or we don't meet |
| 1224 | * min_target, return -EDQUOT */ |
| 1225 | if (!ap->min_target || ap->min_target > ap->allowed) { |
Abhi Das | 9cde289 | 2015-06-02 11:03:04 -0500 | [diff] [blame] | 1226 | if (!test_and_set_bit(QDF_QMSG_QUIET, |
| 1227 | &qd->qd_flags)) { |
| 1228 | print_message(qd, "exceeded"); |
| 1229 | quota_send_warning(qd->qd_id, |
| 1230 | sdp->sd_vfs->s_dev, |
| 1231 | QUOTA_NL_BHARDWARN); |
| 1232 | } |
Abhi Das | 25435e5 | 2015-03-18 12:04:37 -0500 | [diff] [blame] | 1233 | error = -EDQUOT; |
| 1234 | break; |
| 1235 | } |
| 1236 | } else if (warn && warn < value && |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1237 | time_after_eq(jiffies, qd->qd_last_warn + |
Abhi Das | 25435e5 | 2015-03-18 12:04:37 -0500 | [diff] [blame] | 1238 | gfs2_tune_get(sdp, gt_quota_warn_period) |
| 1239 | * HZ)) { |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 1240 | quota_send_warning(qd->qd_id, |
Steven Whitehouse | 2ec4650 | 2009-09-28 12:49:15 +0100 | [diff] [blame] | 1241 | sdp->sd_vfs->s_dev, QUOTA_NL_BSOFTWARN); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1242 | error = print_message(qd, "warning"); |
| 1243 | qd->qd_last_warn = jiffies; |
| 1244 | } |
| 1245 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1246 | return error; |
| 1247 | } |
| 1248 | |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 1249 | void gfs2_quota_change(struct gfs2_inode *ip, s64 change, |
Eric W. Biederman | 7c06b5d | 2013-01-31 20:27:54 -0800 | [diff] [blame] | 1250 | kuid_t uid, kgid_t gid) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1251 | { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1252 | struct gfs2_quota_data *qd; |
Bob Peterson | b58bf40 | 2015-07-24 09:45:43 -0500 | [diff] [blame] | 1253 | u32 x; |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 1254 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1255 | |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 1256 | if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON || |
| 1257 | gfs2_assert_warn(sdp, change)) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1258 | return; |
Steven Whitehouse | 383f01f | 2008-11-04 10:05:22 +0000 | [diff] [blame] | 1259 | if (ip->i_diskflags & GFS2_DIF_SYSTEM) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1260 | return; |
| 1261 | |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 1262 | for (x = 0; x < ip->i_qadata->qa_qd_num; x++) { |
| 1263 | qd = ip->i_qadata->qa_qd[x]; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1264 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 1265 | if (qid_eq(qd->qd_id, make_kqid_uid(uid)) || |
| 1266 | qid_eq(qd->qd_id, make_kqid_gid(gid))) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1267 | do_qc(qd, change); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1268 | } |
| 1269 | } |
| 1270 | } |
| 1271 | |
Jan Kara | ceed172 | 2012-07-03 16:45:28 +0200 | [diff] [blame] | 1272 | int gfs2_quota_sync(struct super_block *sb, int type) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1273 | { |
Steven Whitehouse | 8c42d63 | 2009-09-11 14:36:44 +0100 | [diff] [blame] | 1274 | struct gfs2_sbd *sdp = sb->s_fs_info; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1275 | struct gfs2_quota_data **qda; |
Andreas Gruenbacher | f3b64b5 | 2019-08-31 21:29:12 +0100 | [diff] [blame] | 1276 | unsigned int max_qd = PAGE_SIZE / sizeof(struct gfs2_holder); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1277 | unsigned int num_qd; |
| 1278 | unsigned int x; |
| 1279 | int error = 0; |
| 1280 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1281 | qda = kcalloc(max_qd, sizeof(struct gfs2_quota_data *), GFP_KERNEL); |
| 1282 | if (!qda) |
| 1283 | return -ENOMEM; |
| 1284 | |
Steven Whitehouse | e46c772 | 2013-10-04 12:29:34 +0100 | [diff] [blame] | 1285 | mutex_lock(&sdp->sd_quota_sync_mutex); |
| 1286 | sdp->sd_quota_sync_gen++; |
| 1287 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1288 | do { |
| 1289 | num_qd = 0; |
| 1290 | |
| 1291 | for (;;) { |
| 1292 | error = qd_fish(sdp, qda + num_qd); |
| 1293 | if (error || !qda[num_qd]) |
| 1294 | break; |
| 1295 | if (++num_qd == max_qd) |
| 1296 | break; |
| 1297 | } |
| 1298 | |
| 1299 | if (num_qd) { |
| 1300 | if (!error) |
| 1301 | error = do_sync(num_qd, qda); |
| 1302 | if (!error) |
| 1303 | for (x = 0; x < num_qd; x++) |
| 1304 | qda[x]->qd_sync_gen = |
| 1305 | sdp->sd_quota_sync_gen; |
| 1306 | |
| 1307 | for (x = 0; x < num_qd; x++) |
| 1308 | qd_unlock(qda[x]); |
| 1309 | } |
| 1310 | } while (!error && num_qd == max_qd); |
| 1311 | |
Steven Whitehouse | e46c772 | 2013-10-04 12:29:34 +0100 | [diff] [blame] | 1312 | mutex_unlock(&sdp->sd_quota_sync_mutex); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1313 | kfree(qda); |
| 1314 | |
| 1315 | return error; |
| 1316 | } |
| 1317 | |
Eric W. Biederman | ed87dab | 2013-01-31 19:42:40 -0800 | [diff] [blame] | 1318 | int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1319 | { |
| 1320 | struct gfs2_quota_data *qd; |
| 1321 | struct gfs2_holder q_gh; |
| 1322 | int error; |
| 1323 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 1324 | error = qd_get(sdp, qid, &qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1325 | if (error) |
| 1326 | return error; |
| 1327 | |
| 1328 | error = do_glock(qd, FORCE, &q_gh); |
| 1329 | if (!error) |
| 1330 | gfs2_glock_dq_uninit(&q_gh); |
| 1331 | |
| 1332 | qd_put(qd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1333 | return error; |
| 1334 | } |
| 1335 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1336 | int gfs2_quota_init(struct gfs2_sbd *sdp) |
| 1337 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 1338 | struct gfs2_inode *ip = GFS2_I(sdp->sd_qc_inode); |
Steven Whitehouse | a2e0f79 | 2010-08-11 09:53:11 +0100 | [diff] [blame] | 1339 | u64 size = i_size_read(sdp->sd_qc_inode); |
| 1340 | unsigned int blocks = size >> sdp->sd_sb.sb_bsize_shift; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1341 | unsigned int x, slot = 0; |
| 1342 | unsigned int found = 0; |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 1343 | unsigned int hash; |
Steven Whitehouse | ee2411a | 2013-12-12 17:29:32 +0000 | [diff] [blame] | 1344 | unsigned int bm_size; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 1345 | u64 dblock; |
| 1346 | u32 extlen = 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1347 | int error; |
| 1348 | |
Steven Whitehouse | a2e0f79 | 2010-08-11 09:53:11 +0100 | [diff] [blame] | 1349 | if (gfs2_check_internal_file_size(sdp->sd_qc_inode, 1, 64 << 20)) |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 1350 | return -EIO; |
Steven Whitehouse | a2e0f79 | 2010-08-11 09:53:11 +0100 | [diff] [blame] | 1351 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1352 | sdp->sd_quota_slots = blocks * sdp->sd_qc_per_block; |
Steven Whitehouse | ee2411a | 2013-12-12 17:29:32 +0000 | [diff] [blame] | 1353 | bm_size = DIV_ROUND_UP(sdp->sd_quota_slots, 8 * sizeof(unsigned long)); |
| 1354 | bm_size *= sizeof(unsigned long); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1355 | error = -ENOMEM; |
Fabian Frederick | fcf10d3 | 2014-02-26 19:07:56 +0100 | [diff] [blame] | 1356 | sdp->sd_quota_bitmap = kzalloc(bm_size, GFP_NOFS | __GFP_NOWARN); |
Steven Whitehouse | ee2411a | 2013-12-12 17:29:32 +0000 | [diff] [blame] | 1357 | if (sdp->sd_quota_bitmap == NULL) |
Fabian Frederick | fcf10d3 | 2014-02-26 19:07:56 +0100 | [diff] [blame] | 1358 | sdp->sd_quota_bitmap = __vmalloc(bm_size, GFP_NOFS | |
| 1359 | __GFP_ZERO, PAGE_KERNEL); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1360 | if (!sdp->sd_quota_bitmap) |
| 1361 | return error; |
| 1362 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1363 | for (x = 0; x < blocks; x++) { |
| 1364 | struct buffer_head *bh; |
Steven Whitehouse | 7aed98f | 2013-11-26 15:17:09 +0000 | [diff] [blame] | 1365 | const struct gfs2_quota_change *qc; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1366 | unsigned int y; |
| 1367 | |
| 1368 | if (!extlen) { |
| 1369 | int new = 0; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 1370 | error = gfs2_extent_map(&ip->i_inode, x, &new, &dblock, &extlen); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1371 | if (error) |
| 1372 | goto fail; |
| 1373 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1374 | error = -EIO; |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 1375 | bh = gfs2_meta_ra(ip->i_gl, dblock, extlen); |
| 1376 | if (!bh) |
| 1377 | goto fail; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1378 | if (gfs2_metatype_check(sdp, bh, GFS2_METATYPE_QC)) { |
| 1379 | brelse(bh); |
| 1380 | goto fail; |
| 1381 | } |
| 1382 | |
Steven Whitehouse | 7aed98f | 2013-11-26 15:17:09 +0000 | [diff] [blame] | 1383 | qc = (const struct gfs2_quota_change *)(bh->b_data + sizeof(struct gfs2_meta_header)); |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 1384 | for (y = 0; y < sdp->sd_qc_per_block && slot < sdp->sd_quota_slots; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1385 | y++, slot++) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1386 | struct gfs2_quota_data *qd; |
Steven Whitehouse | 7aed98f | 2013-11-26 15:17:09 +0000 | [diff] [blame] | 1387 | s64 qc_change = be64_to_cpu(qc->qc_change); |
| 1388 | u32 qc_flags = be32_to_cpu(qc->qc_flags); |
| 1389 | enum quota_type qtype = (qc_flags & GFS2_QCF_USER) ? |
| 1390 | USRQUOTA : GRPQUOTA; |
| 1391 | struct kqid qc_id = make_kqid(&init_user_ns, qtype, |
| 1392 | be32_to_cpu(qc->qc_id)); |
| 1393 | qc++; |
| 1394 | if (!qc_change) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1395 | continue; |
| 1396 | |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 1397 | hash = gfs2_qd_hash(sdp, qc_id); |
| 1398 | qd = qd_alloc(hash, sdp, qc_id); |
| 1399 | if (qd == NULL) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1400 | brelse(bh); |
| 1401 | goto fail; |
| 1402 | } |
| 1403 | |
| 1404 | set_bit(QDF_CHANGE, &qd->qd_flags); |
Steven Whitehouse | 7aed98f | 2013-11-26 15:17:09 +0000 | [diff] [blame] | 1405 | qd->qd_change = qc_change; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1406 | qd->qd_slot = slot; |
| 1407 | qd->qd_slot_count = 1; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1408 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1409 | spin_lock(&qd_lock); |
Steven Whitehouse | ee2411a | 2013-12-12 17:29:32 +0000 | [diff] [blame] | 1410 | BUG_ON(test_and_set_bit(slot, sdp->sd_quota_bitmap)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1411 | list_add(&qd->qd_list, &sdp->sd_quota_list); |
| 1412 | atomic_inc(&sdp->sd_quota_count); |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1413 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1414 | |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 1415 | spin_lock_bucket(hash); |
| 1416 | hlist_bl_add_head_rcu(&qd->qd_hlist, &qd_hash_table[hash]); |
| 1417 | spin_unlock_bucket(hash); |
| 1418 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1419 | found++; |
| 1420 | } |
| 1421 | |
| 1422 | brelse(bh); |
| 1423 | dblock++; |
| 1424 | extlen--; |
| 1425 | } |
| 1426 | |
| 1427 | if (found) |
| 1428 | fs_info(sdp, "found %u quota changes\n", found); |
| 1429 | |
| 1430 | return 0; |
| 1431 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1432 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1433 | gfs2_quota_cleanup(sdp); |
| 1434 | return error; |
| 1435 | } |
| 1436 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1437 | void gfs2_quota_cleanup(struct gfs2_sbd *sdp) |
| 1438 | { |
| 1439 | struct list_head *head = &sdp->sd_quota_list; |
| 1440 | struct gfs2_quota_data *qd; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1441 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1442 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1443 | while (!list_empty(head)) { |
| 1444 | qd = list_entry(head->prev, struct gfs2_quota_data, qd_list); |
| 1445 | |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 1446 | list_del(&qd->qd_list); |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 1447 | |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 1448 | /* Also remove if this qd exists in the reclaim list */ |
Steven Whitehouse | 2147dbf | 2013-11-04 10:15:08 +0000 | [diff] [blame] | 1449 | list_lru_del(&gfs2_qd_lru, &qd->qd_lru); |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 1450 | atomic_dec(&sdp->sd_quota_count); |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1451 | spin_unlock(&qd_lock); |
Abhijith Das | 0a7ab79 | 2009-01-07 16:03:37 -0600 | [diff] [blame] | 1452 | |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 1453 | spin_lock_bucket(qd->qd_hash); |
| 1454 | hlist_bl_del_rcu(&qd->qd_hlist); |
| 1455 | spin_unlock_bucket(qd->qd_hash); |
| 1456 | |
Steven Whitehouse | 8ad151c | 2013-12-12 11:34:09 +0000 | [diff] [blame] | 1457 | gfs2_assert_warn(sdp, !qd->qd_change); |
| 1458 | gfs2_assert_warn(sdp, !qd->qd_slot_count); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1459 | gfs2_assert_warn(sdp, !qd->qd_bh_count); |
| 1460 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 1461 | gfs2_glock_put(qd->qd_gl); |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 1462 | call_rcu(&qd->qd_rcu, gfs2_qd_dealloc); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1463 | |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1464 | spin_lock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1465 | } |
Steven Whitehouse | 7d80823 | 2013-11-01 14:52:08 -0400 | [diff] [blame] | 1466 | spin_unlock(&qd_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1467 | |
| 1468 | gfs2_assert_warn(sdp, !atomic_read(&sdp->sd_quota_count)); |
| 1469 | |
Al Viro | 3cdcf63 | 2014-11-20 05:18:38 +0000 | [diff] [blame] | 1470 | kvfree(sdp->sd_quota_bitmap); |
| 1471 | sdp->sd_quota_bitmap = NULL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1472 | } |
| 1473 | |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1474 | static void quotad_error(struct gfs2_sbd *sdp, const char *msg, int error) |
| 1475 | { |
| 1476 | if (error == 0 || error == -EROFS) |
| 1477 | return; |
Bob Peterson | eb43e66 | 2019-11-14 09:52:15 -0500 | [diff] [blame] | 1478 | if (!gfs2_withdrawn(sdp)) { |
Bob Peterson | f34a6135 | 2019-04-16 12:23:28 -0600 | [diff] [blame] | 1479 | if (!cmpxchg(&sdp->sd_log_error, 0, error)) |
| 1480 | fs_err(sdp, "gfs2_quotad: %s error %d\n", msg, error); |
Bob Peterson | 942b0cd | 2017-08-16 11:30:06 -0500 | [diff] [blame] | 1481 | wake_up(&sdp->sd_logd_waitq); |
| 1482 | } |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1483 | } |
| 1484 | |
| 1485 | static void quotad_check_timeo(struct gfs2_sbd *sdp, const char *msg, |
Steven Whitehouse | 8c42d63 | 2009-09-11 14:36:44 +0100 | [diff] [blame] | 1486 | int (*fxn)(struct super_block *sb, int type), |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1487 | unsigned long t, unsigned long *timeo, |
| 1488 | unsigned int *new_timeo) |
| 1489 | { |
| 1490 | if (t >= *timeo) { |
Steven Whitehouse | 8c42d63 | 2009-09-11 14:36:44 +0100 | [diff] [blame] | 1491 | int error = fxn(sdp->sd_vfs, 0); |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1492 | quotad_error(sdp, msg, error); |
| 1493 | *timeo = gfs2_tune_get_i(&sdp->sd_tune, new_timeo) * HZ; |
| 1494 | } else { |
| 1495 | *timeo -= t; |
| 1496 | } |
| 1497 | } |
| 1498 | |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 1499 | static void quotad_check_trunc_list(struct gfs2_sbd *sdp) |
| 1500 | { |
| 1501 | struct gfs2_inode *ip; |
| 1502 | |
| 1503 | while(1) { |
| 1504 | ip = NULL; |
| 1505 | spin_lock(&sdp->sd_trunc_lock); |
| 1506 | if (!list_empty(&sdp->sd_trunc_list)) { |
| 1507 | ip = list_entry(sdp->sd_trunc_list.next, |
| 1508 | struct gfs2_inode, i_trunc_list); |
| 1509 | list_del_init(&ip->i_trunc_list); |
| 1510 | } |
| 1511 | spin_unlock(&sdp->sd_trunc_lock); |
| 1512 | if (ip == NULL) |
| 1513 | return; |
| 1514 | gfs2_glock_finish_truncate(ip); |
| 1515 | } |
| 1516 | } |
| 1517 | |
Benjamin Marzinski | 3d3c10f | 2009-10-20 02:39:44 -0500 | [diff] [blame] | 1518 | void gfs2_wake_up_statfs(struct gfs2_sbd *sdp) { |
| 1519 | if (!sdp->sd_statfs_force_sync) { |
| 1520 | sdp->sd_statfs_force_sync = 1; |
| 1521 | wake_up(&sdp->sd_quota_wait); |
| 1522 | } |
| 1523 | } |
| 1524 | |
| 1525 | |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1526 | /** |
| 1527 | * gfs2_quotad - Write cached quota changes into the quota file |
| 1528 | * @sdp: Pointer to GFS2 superblock |
| 1529 | * |
| 1530 | */ |
| 1531 | |
| 1532 | int gfs2_quotad(void *data) |
| 1533 | { |
| 1534 | struct gfs2_sbd *sdp = data; |
| 1535 | struct gfs2_tune *tune = &sdp->sd_tune; |
| 1536 | unsigned long statfs_timeo = 0; |
| 1537 | unsigned long quotad_timeo = 0; |
| 1538 | unsigned long t = 0; |
| 1539 | DEFINE_WAIT(wait); |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 1540 | int empty; |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1541 | |
| 1542 | while (!kthread_should_stop()) { |
| 1543 | |
Bob Peterson | 601ef0d | 2020-01-28 20:23:45 +0100 | [diff] [blame^] | 1544 | if (gfs2_withdrawn(sdp)) |
| 1545 | goto bypass; |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1546 | /* Update the master statfs file */ |
Benjamin Marzinski | 3d3c10f | 2009-10-20 02:39:44 -0500 | [diff] [blame] | 1547 | if (sdp->sd_statfs_force_sync) { |
| 1548 | int error = gfs2_statfs_sync(sdp->sd_vfs, 0); |
| 1549 | quotad_error(sdp, "statfs", error); |
| 1550 | statfs_timeo = gfs2_tune_get(sdp, gt_statfs_quantum) * HZ; |
| 1551 | } |
| 1552 | else |
| 1553 | quotad_check_timeo(sdp, "statfs", gfs2_statfs_sync, t, |
| 1554 | &statfs_timeo, |
| 1555 | &tune->gt_statfs_quantum); |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1556 | |
| 1557 | /* Update quota file */ |
Steven Whitehouse | edd2e9a | 2013-06-03 11:12:59 +0100 | [diff] [blame] | 1558 | quotad_check_timeo(sdp, "sync", gfs2_quota_sync, t, |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1559 | "ad_timeo, &tune->gt_quota_quantum); |
| 1560 | |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 1561 | /* Check for & recover partially truncated inodes */ |
| 1562 | quotad_check_trunc_list(sdp); |
| 1563 | |
Tejun Heo | a0acae0 | 2011-11-21 12:32:22 -0800 | [diff] [blame] | 1564 | try_to_freeze(); |
| 1565 | |
Bob Peterson | 601ef0d | 2020-01-28 20:23:45 +0100 | [diff] [blame^] | 1566 | bypass: |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1567 | t = min(quotad_timeo, statfs_timeo); |
| 1568 | |
Steven Whitehouse | 7fa5d20 | 2009-03-31 15:49:08 +0100 | [diff] [blame] | 1569 | prepare_to_wait(&sdp->sd_quota_wait, &wait, TASK_INTERRUPTIBLE); |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 1570 | spin_lock(&sdp->sd_trunc_lock); |
| 1571 | empty = list_empty(&sdp->sd_trunc_list); |
| 1572 | spin_unlock(&sdp->sd_trunc_lock); |
Benjamin Marzinski | 3d3c10f | 2009-10-20 02:39:44 -0500 | [diff] [blame] | 1573 | if (empty && !sdp->sd_statfs_force_sync) |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 1574 | t -= schedule_timeout(t); |
| 1575 | else |
| 1576 | t = 0; |
Steven Whitehouse | 37b2c83 | 2008-11-17 14:25:37 +0000 | [diff] [blame] | 1577 | finish_wait(&sdp->sd_quota_wait, &wait); |
| 1578 | } |
| 1579 | |
| 1580 | return 0; |
| 1581 | } |
| 1582 | |
Jan Kara | e54b2e2 | 2014-11-19 16:41:07 +0100 | [diff] [blame] | 1583 | static int gfs2_quota_get_state(struct super_block *sb, struct qc_state *state) |
Steven Whitehouse | 1d371b5 | 2009-09-11 15:57:27 +0100 | [diff] [blame] | 1584 | { |
| 1585 | struct gfs2_sbd *sdp = sb->s_fs_info; |
| 1586 | |
Jan Kara | e54b2e2 | 2014-11-19 16:41:07 +0100 | [diff] [blame] | 1587 | memset(state, 0, sizeof(*state)); |
Christoph Hellwig | ad6bb90 | 2010-05-05 00:10:56 +0200 | [diff] [blame] | 1588 | |
| 1589 | switch (sdp->sd_args.ar_quota) { |
| 1590 | case GFS2_QUOTA_ON: |
Jan Kara | e54b2e2 | 2014-11-19 16:41:07 +0100 | [diff] [blame] | 1591 | state->s_state[USRQUOTA].flags |= QCI_LIMITS_ENFORCED; |
| 1592 | state->s_state[GRPQUOTA].flags |= QCI_LIMITS_ENFORCED; |
Christoph Hellwig | ad6bb90 | 2010-05-05 00:10:56 +0200 | [diff] [blame] | 1593 | /*FALLTHRU*/ |
| 1594 | case GFS2_QUOTA_ACCOUNT: |
Jan Kara | e54b2e2 | 2014-11-19 16:41:07 +0100 | [diff] [blame] | 1595 | state->s_state[USRQUOTA].flags |= QCI_ACCT_ENABLED | |
| 1596 | QCI_SYSFILE; |
| 1597 | state->s_state[GRPQUOTA].flags |= QCI_ACCT_ENABLED | |
| 1598 | QCI_SYSFILE; |
Christoph Hellwig | ad6bb90 | 2010-05-05 00:10:56 +0200 | [diff] [blame] | 1599 | break; |
| 1600 | case GFS2_QUOTA_OFF: |
| 1601 | break; |
| 1602 | } |
Steven Whitehouse | 1d371b5 | 2009-09-11 15:57:27 +0100 | [diff] [blame] | 1603 | if (sdp->sd_quota_inode) { |
Jan Kara | e54b2e2 | 2014-11-19 16:41:07 +0100 | [diff] [blame] | 1604 | state->s_state[USRQUOTA].ino = |
| 1605 | GFS2_I(sdp->sd_quota_inode)->i_no_addr; |
| 1606 | state->s_state[USRQUOTA].blocks = sdp->sd_quota_inode->i_blocks; |
Steven Whitehouse | 1d371b5 | 2009-09-11 15:57:27 +0100 | [diff] [blame] | 1607 | } |
Jan Kara | e54b2e2 | 2014-11-19 16:41:07 +0100 | [diff] [blame] | 1608 | state->s_state[USRQUOTA].nextents = 1; /* unsupported */ |
| 1609 | state->s_state[GRPQUOTA] = state->s_state[USRQUOTA]; |
| 1610 | state->s_incoredqs = list_lru_count(&gfs2_qd_lru); |
Steven Whitehouse | 1d371b5 | 2009-09-11 15:57:27 +0100 | [diff] [blame] | 1611 | return 0; |
| 1612 | } |
| 1613 | |
Eric W. Biederman | 74a8a10 | 2012-09-16 02:07:49 -0700 | [diff] [blame] | 1614 | static int gfs2_get_dqblk(struct super_block *sb, struct kqid qid, |
Jan Kara | 14bf61f | 2014-10-09 16:03:13 +0200 | [diff] [blame] | 1615 | struct qc_dqblk *fdq) |
Steven Whitehouse | 113d6b3 | 2009-09-28 11:52:16 +0100 | [diff] [blame] | 1616 | { |
| 1617 | struct gfs2_sbd *sdp = sb->s_fs_info; |
| 1618 | struct gfs2_quota_lvb *qlvb; |
| 1619 | struct gfs2_quota_data *qd; |
| 1620 | struct gfs2_holder q_gh; |
| 1621 | int error; |
| 1622 | |
Jan Kara | 14bf61f | 2014-10-09 16:03:13 +0200 | [diff] [blame] | 1623 | memset(fdq, 0, sizeof(*fdq)); |
Steven Whitehouse | 113d6b3 | 2009-09-28 11:52:16 +0100 | [diff] [blame] | 1624 | |
| 1625 | if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF) |
| 1626 | return -ESRCH; /* Crazy XFS error code */ |
| 1627 | |
Eric W. Biederman | 236c64e | 2013-01-31 20:09:30 -0800 | [diff] [blame] | 1628 | if ((qid.type != USRQUOTA) && |
| 1629 | (qid.type != GRPQUOTA)) |
Steven Whitehouse | 113d6b3 | 2009-09-28 11:52:16 +0100 | [diff] [blame] | 1630 | return -EINVAL; |
| 1631 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 1632 | error = qd_get(sdp, qid, &qd); |
Steven Whitehouse | 113d6b3 | 2009-09-28 11:52:16 +0100 | [diff] [blame] | 1633 | if (error) |
| 1634 | return error; |
| 1635 | error = do_glock(qd, FORCE, &q_gh); |
| 1636 | if (error) |
| 1637 | goto out; |
| 1638 | |
David Teigland | 4e2f884 | 2012-11-14 13:47:37 -0500 | [diff] [blame] | 1639 | qlvb = (struct gfs2_quota_lvb *)qd->qd_gl->gl_lksb.sb_lvbptr; |
Jan Kara | 14bf61f | 2014-10-09 16:03:13 +0200 | [diff] [blame] | 1640 | fdq->d_spc_hardlimit = be64_to_cpu(qlvb->qb_limit) << sdp->sd_sb.sb_bsize_shift; |
| 1641 | fdq->d_spc_softlimit = be64_to_cpu(qlvb->qb_warn) << sdp->sd_sb.sb_bsize_shift; |
| 1642 | fdq->d_space = be64_to_cpu(qlvb->qb_value) << sdp->sd_sb.sb_bsize_shift; |
Steven Whitehouse | 113d6b3 | 2009-09-28 11:52:16 +0100 | [diff] [blame] | 1643 | |
| 1644 | gfs2_glock_dq_uninit(&q_gh); |
| 1645 | out: |
| 1646 | qd_put(qd); |
| 1647 | return error; |
| 1648 | } |
| 1649 | |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1650 | /* GFS2 only supports a subset of the XFS fields */ |
Jan Kara | 14bf61f | 2014-10-09 16:03:13 +0200 | [diff] [blame] | 1651 | #define GFS2_FIELDMASK (QC_SPC_SOFT|QC_SPC_HARD|QC_SPACE) |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1652 | |
Eric W. Biederman | 74a8a10 | 2012-09-16 02:07:49 -0700 | [diff] [blame] | 1653 | static int gfs2_set_dqblk(struct super_block *sb, struct kqid qid, |
Jan Kara | 14bf61f | 2014-10-09 16:03:13 +0200 | [diff] [blame] | 1654 | struct qc_dqblk *fdq) |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1655 | { |
| 1656 | struct gfs2_sbd *sdp = sb->s_fs_info; |
| 1657 | struct gfs2_inode *ip = GFS2_I(sdp->sd_quota_inode); |
| 1658 | struct gfs2_quota_data *qd; |
| 1659 | struct gfs2_holder q_gh, i_gh; |
| 1660 | unsigned int data_blocks, ind_blocks; |
| 1661 | unsigned int blocks = 0; |
| 1662 | int alloc_required; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1663 | loff_t offset; |
| 1664 | int error; |
| 1665 | |
| 1666 | if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF) |
| 1667 | return -ESRCH; /* Crazy XFS error code */ |
| 1668 | |
Eric W. Biederman | 236c64e | 2013-01-31 20:09:30 -0800 | [diff] [blame] | 1669 | if ((qid.type != USRQUOTA) && |
| 1670 | (qid.type != GRPQUOTA)) |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1671 | return -EINVAL; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1672 | |
| 1673 | if (fdq->d_fieldmask & ~GFS2_FIELDMASK) |
| 1674 | return -EINVAL; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1675 | |
Eric W. Biederman | 05e0a60 | 2013-01-31 19:52:08 -0800 | [diff] [blame] | 1676 | error = qd_get(sdp, qid, &qd); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1677 | if (error) |
| 1678 | return error; |
| 1679 | |
Bob Peterson | b54e9a0 | 2015-10-26 10:40:28 -0500 | [diff] [blame] | 1680 | error = gfs2_rsqa_alloc(ip); |
Bob Peterson | 0a305e4 | 2012-06-06 11:17:59 +0100 | [diff] [blame] | 1681 | if (error) |
| 1682 | goto out_put; |
| 1683 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1684 | inode_lock(&ip->i_inode); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1685 | error = gfs2_glock_nq_init(qd->qd_gl, LM_ST_EXCLUSIVE, 0, &q_gh); |
| 1686 | if (error) |
Bob Peterson | 0a305e4 | 2012-06-06 11:17:59 +0100 | [diff] [blame] | 1687 | goto out_unlockput; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1688 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh); |
| 1689 | if (error) |
| 1690 | goto out_q; |
| 1691 | |
| 1692 | /* Check for existing entry, if none then alloc new blocks */ |
| 1693 | error = update_qd(sdp, qd); |
| 1694 | if (error) |
| 1695 | goto out_i; |
| 1696 | |
| 1697 | /* If nothing has changed, this is a no-op */ |
Jan Kara | 14bf61f | 2014-10-09 16:03:13 +0200 | [diff] [blame] | 1698 | if ((fdq->d_fieldmask & QC_SPC_SOFT) && |
| 1699 | ((fdq->d_spc_softlimit >> sdp->sd_sb.sb_bsize_shift) == be64_to_cpu(qd->qd_qb.qb_warn))) |
| 1700 | fdq->d_fieldmask ^= QC_SPC_SOFT; |
Abhijith Das | 802ec9b | 2010-11-18 11:26:46 -0500 | [diff] [blame] | 1701 | |
Jan Kara | 14bf61f | 2014-10-09 16:03:13 +0200 | [diff] [blame] | 1702 | if ((fdq->d_fieldmask & QC_SPC_HARD) && |
| 1703 | ((fdq->d_spc_hardlimit >> sdp->sd_sb.sb_bsize_shift) == be64_to_cpu(qd->qd_qb.qb_limit))) |
| 1704 | fdq->d_fieldmask ^= QC_SPC_HARD; |
Abhijith Das | 802ec9b | 2010-11-18 11:26:46 -0500 | [diff] [blame] | 1705 | |
Jan Kara | 14bf61f | 2014-10-09 16:03:13 +0200 | [diff] [blame] | 1706 | if ((fdq->d_fieldmask & QC_SPACE) && |
| 1707 | ((fdq->d_space >> sdp->sd_sb.sb_bsize_shift) == be64_to_cpu(qd->qd_qb.qb_value))) |
| 1708 | fdq->d_fieldmask ^= QC_SPACE; |
Abhijith Das | 802ec9b | 2010-11-18 11:26:46 -0500 | [diff] [blame] | 1709 | |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1710 | if (fdq->d_fieldmask == 0) |
| 1711 | goto out_i; |
| 1712 | |
| 1713 | offset = qd2offset(qd); |
Bob Peterson | 461cb41 | 2010-06-24 19:21:20 -0400 | [diff] [blame] | 1714 | alloc_required = gfs2_write_alloc_required(ip, offset, sizeof(struct gfs2_quota)); |
Abhijith Das | e79a46a | 2011-02-07 11:22:41 -0500 | [diff] [blame] | 1715 | if (gfs2_is_stuffed(ip)) |
| 1716 | alloc_required = 1; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1717 | if (alloc_required) { |
Steven Whitehouse | 7b9cff4 | 2013-10-02 11:13:25 +0100 | [diff] [blame] | 1718 | struct gfs2_alloc_parms ap = { .aflags = 0, }; |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1719 | gfs2_write_calc_reserv(ip, sizeof(struct gfs2_quota), |
| 1720 | &data_blocks, &ind_blocks); |
Bob Peterson | 564e12b | 2011-11-21 13:36:17 -0500 | [diff] [blame] | 1721 | blocks = 1 + data_blocks + ind_blocks; |
Steven Whitehouse | 7b9cff4 | 2013-10-02 11:13:25 +0100 | [diff] [blame] | 1722 | ap.target = blocks; |
| 1723 | error = gfs2_inplace_reserve(ip, &ap); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1724 | if (error) |
Bob Peterson | 564e12b | 2011-11-21 13:36:17 -0500 | [diff] [blame] | 1725 | goto out_i; |
Steven Whitehouse | 71f890f | 2012-07-30 14:53:19 +0100 | [diff] [blame] | 1726 | blocks += gfs2_rg_blocks(ip, blocks); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1727 | } |
| 1728 | |
Abhijith Das | e79a46a | 2011-02-07 11:22:41 -0500 | [diff] [blame] | 1729 | /* Some quotas span block boundaries and can update two blocks, |
| 1730 | adding an extra block to the transaction to handle such quotas */ |
| 1731 | error = gfs2_trans_begin(sdp, blocks + RES_DINODE + 2, 0); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1732 | if (error) |
| 1733 | goto out_release; |
| 1734 | |
| 1735 | /* Apply changes */ |
| 1736 | error = gfs2_adjust_quota(ip, offset, 0, qd, fdq); |
Abhi Das | 9cde289 | 2015-06-02 11:03:04 -0500 | [diff] [blame] | 1737 | if (!error) |
| 1738 | clear_bit(QDF_QMSG_QUIET, &qd->qd_flags); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1739 | |
| 1740 | gfs2_trans_end(sdp); |
| 1741 | out_release: |
Bob Peterson | 564e12b | 2011-11-21 13:36:17 -0500 | [diff] [blame] | 1742 | if (alloc_required) |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1743 | gfs2_inplace_release(ip); |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1744 | out_i: |
| 1745 | gfs2_glock_dq_uninit(&i_gh); |
| 1746 | out_q: |
| 1747 | gfs2_glock_dq_uninit(&q_gh); |
Bob Peterson | 0a305e4 | 2012-06-06 11:17:59 +0100 | [diff] [blame] | 1748 | out_unlockput: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1749 | inode_unlock(&ip->i_inode); |
Bob Peterson | 0a305e4 | 2012-06-06 11:17:59 +0100 | [diff] [blame] | 1750 | out_put: |
Steven Whitehouse | e285c10 | 2009-09-23 13:50:49 +0100 | [diff] [blame] | 1751 | qd_put(qd); |
| 1752 | return error; |
| 1753 | } |
| 1754 | |
Steven Whitehouse | cc632e7 | 2009-09-15 09:59:02 +0100 | [diff] [blame] | 1755 | const struct quotactl_ops gfs2_quotactl_ops = { |
| 1756 | .quota_sync = gfs2_quota_sync, |
Jan Kara | e54b2e2 | 2014-11-19 16:41:07 +0100 | [diff] [blame] | 1757 | .get_state = gfs2_quota_get_state, |
Christoph Hellwig | b9b2dd3 | 2010-05-06 17:04:58 -0400 | [diff] [blame] | 1758 | .get_dqblk = gfs2_get_dqblk, |
Christoph Hellwig | c472b43 | 2010-05-06 17:05:17 -0400 | [diff] [blame] | 1759 | .set_dqblk = gfs2_set_dqblk, |
Steven Whitehouse | cc632e7 | 2009-09-15 09:59:02 +0100 | [diff] [blame] | 1760 | }; |
Steven Whitehouse | c754fbb | 2013-12-12 10:47:59 +0000 | [diff] [blame] | 1761 | |
| 1762 | void __init gfs2_quota_hash_init(void) |
| 1763 | { |
| 1764 | unsigned i; |
| 1765 | |
| 1766 | for(i = 0; i < GFS2_QD_HASH_SIZE; i++) |
| 1767 | INIT_HLIST_BL_HEAD(&qd_hash_table[i]); |
| 1768 | } |