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review.shift-gmbh.com / SHIFTPHONES / mainline / linux / c1dd10c681cd661aae7926630b3f3b0f26fc1cd5 / . / fs / gfs2 / log.h
blob: fc905c2af53ce928fa1ea1ee8dc99e53271d9c1c [file] [log] [blame]
Thomas Gleixner7336d0e2019-05-31 01:09:56 -0700[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0-only */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]2/*
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Steven Whitehouse3a8a9a12006-05-18 15:09:15 -0400[diff] [blame]4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]5 */
6
7#ifndef __LOG_DOT_H__
8#define __LOG_DOT_H__
9
Steven Whitehousef2f7ba52006-09-05 10:39:21 -0400[diff] [blame]10#include <linux/list.h>
11#include <linux/spinlock.h>
Steven Whitehouse4667a0e2011-04-18 14:18:09 +0100[diff] [blame]12#include <linux/writeback.h>
Steven Whitehousef2f7ba52006-09-05 10:39:21 -0400[diff] [blame]13#include "incore.h"
Andreas Gruenbacher845802b2018-06-04 07:50:16 -0500[diff] [blame]14#include "inode.h"
Steven Whitehousef2f7ba52006-09-05 10:39:21 -0400[diff] [blame]15
Andreas Gruenbacherfe3e3972020-12-10 12:49:56 +0100[diff] [blame]16/*
17 * The minimum amount of log space required for a log flush is one block for
18 * revokes and one block for the log header. Log flushes other than
19 * GFS2_LOG_HEAD_FLUSH_NORMAL may write one or two more log headers.
20 */
21#define GFS2_LOG_FLUSH_MIN_BLOCKS 4
22
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]23/**
24 * gfs2_log_lock - acquire the right to mess with the log manager
25 * @sdp: the filesystem
26 *
27 */
28
29static inline void gfs2_log_lock(struct gfs2_sbd *sdp)
Harvey Harrison2d81afb2008-05-29 18:27:51 -0700[diff] [blame]30__acquires(&sdp->sd_log_lock)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]31{
32 spin_lock(&sdp->sd_log_lock);
33}
34
35/**
36 * gfs2_log_unlock - release the right to mess with the log manager
37 * @sdp: the filesystem
38 *
39 */
40
41static inline void gfs2_log_unlock(struct gfs2_sbd *sdp)
Harvey Harrison2d81afb2008-05-29 18:27:51 -0700[diff] [blame]42__releases(&sdp->sd_log_lock)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]43{
44 spin_unlock(&sdp->sd_log_lock);
45}
46
47static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp,
48 unsigned int value)
49{
50 if (++value == sdp->sd_jdesc->jd_blocks) {
51 value = 0;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]52 }
Andreas Gruenbacher5cb738b2020-12-19 07:15:17 +0100[diff] [blame]53 sdp->sd_log_tail = value;
54 sdp->sd_log_flush_tail = value;
55 sdp->sd_log_head = value;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]56}
57
Steven Whitehouse45138992013-01-28 09:30:07 +0000[diff] [blame]58static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip)
59{
Andreas Gruenbacher977767a2018-10-12 20:07:27 +0200[diff] [blame]60 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
Steven Whitehouse45138992013-01-28 09:30:07 +0000[diff] [blame]61
Andreas Gruenbacher977767a2018-10-12 20:07:27 +0200[diff] [blame]62 if (gfs2_is_jdata(ip) || !gfs2_is_ordered(sdp))
Andreas Gruenbacher845802b2018-06-04 07:50:16 -0500[diff] [blame]63 return;
64
Bob Peterson75424862020-06-17 07:47:34 -0500[diff] [blame]65 if (list_empty(&ip->i_ordered)) {
Steven Whitehouse45138992013-01-28 09:30:07 +0000[diff] [blame]66 spin_lock(&sdp->sd_ordered_lock);
Bob Peterson75424862020-06-17 07:47:34 -0500[diff] [blame]67 if (list_empty(&ip->i_ordered))
Andreas Gruenbachera5b1d3f2019-04-05 12:16:14 +0100[diff] [blame]68 list_add(&ip->i_ordered, &sdp->sd_log_ordered);
Steven Whitehouse45138992013-01-28 09:30:07 +0000[diff] [blame]69 spin_unlock(&sdp->sd_ordered_lock);
70 }
71}
Bob Peterson2e9eeaa2019-12-13 08:10:51 -0600[diff] [blame]72
Steven Whitehouse45138992013-01-28 09:30:07 +0000[diff] [blame]73extern void gfs2_ordered_del_inode(struct gfs2_inode *ip);
Bob Peterson2e9eeaa2019-12-13 08:10:51 -0600[diff] [blame]74extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct);
Bob Peterson68942872020-07-22 10:27:50 -0500[diff] [blame]75extern void gfs2_remove_from_ail(struct gfs2_bufdata *bd);
Andreas Gruenbacherf3708fb2020-12-13 09:21:34 +0100[diff] [blame]76extern bool gfs2_log_is_empty(struct gfs2_sbd *sdp);
Andreas Gruenbacher2129b422020-12-17 16:14:30 +0100[diff] [blame]77extern void gfs2_log_release_revokes(struct gfs2_sbd *sdp, unsigned int revokes);
Benjamin Marzinski24972552014-05-01 22:26:55 -0500[diff] [blame]78extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks);
Andreas Gruenbacher2129b422020-12-17 16:14:30 +0100[diff] [blame]79extern bool gfs2_log_try_reserve(struct gfs2_sbd *sdp, struct gfs2_trans *tr,
80 unsigned int *extra_revokes);
81extern void gfs2_log_reserve(struct gfs2_sbd *sdp, struct gfs2_trans *tr,
82 unsigned int *extra_revokes);
Bob Petersonc1696fb2018-01-17 00:01:33 +0100[diff] [blame]83extern void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
Bob Peterson7c70b892019-03-25 09:34:19 -0600[diff] [blame]84 u64 seq, u32 tail, u32 lblock, u32 flags,
85 int op_flags);
Benjamin Marzinski24972552014-05-01 22:26:55 -0500[diff] [blame]86extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl,
Bob Petersonc1696fb2018-01-17 00:01:33 +0100[diff] [blame]87 u32 type);
Bob Petersoned4878e2010-05-20 23:30:11 -0400[diff] [blame]88extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
Steven Whitehouse4667a0e2011-04-18 14:18:09 +0100[diff] [blame]89extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc);
Bob Peterson9ff78282019-11-13 13:47:02 -0600[diff] [blame]90extern void log_flush_wait(struct gfs2_sbd *sdp);
Steven Whitehouse2bcd6102007-11-08 14:25:12 +0000[diff] [blame]91
Bob Petersoned4878e2010-05-20 23:30:11 -0400[diff] [blame]92extern int gfs2_logd(void *data);
Benjamin Marzinski5d054962013-06-14 11:38:29 -0500[diff] [blame]93extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
Bob Petersonfe5e7ba2019-11-14 09:49:11 -0500[diff] [blame]94extern void gfs2_glock_remove_revoke(struct gfs2_glock *gl);
Andreas Gruenbachere7501bf2020-12-19 03:11:51 +0100[diff] [blame]95extern void gfs2_flush_revokes(struct gfs2_sbd *sdp);
Bob Petersonf5456b52021-05-19 14:54:02 -0400[diff] [blame]96extern void gfs2_ail_drain(struct gfs2_sbd *sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000[diff] [blame]97
98#endif /* __LOG_DOT_H__ */