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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5 */
6
7#ifndef __LOG_DOT_H__
8#define __LOG_DOT_H__
9
10#include <linux/list.h>
11#include <linux/spinlock.h>
12#include <linux/writeback.h>
13#include "incore.h"
14#include "inode.h"
15
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
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)
30__acquires(&sdp->sd_log_lock)
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)
42__releases(&sdp->sd_log_lock)
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;
52 }
53 sdp->sd_log_tail = value;
54 sdp->sd_log_flush_tail = value;
55 sdp->sd_log_head = value;
56}
57
58static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip)
59{
60 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
61
62 if (gfs2_is_jdata(ip) || !gfs2_is_ordered(sdp))
63 return;
64
65 if (list_empty(&ip->i_ordered)) {
66 spin_lock(&sdp->sd_ordered_lock);
67 if (list_empty(&ip->i_ordered))
68 list_add(&ip->i_ordered, &sdp->sd_log_ordered);
69 spin_unlock(&sdp->sd_ordered_lock);
70 }
71}
72
73void gfs2_ordered_del_inode(struct gfs2_inode *ip);
74unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct);
75void gfs2_remove_from_ail(struct gfs2_bufdata *bd);
76bool gfs2_log_is_empty(struct gfs2_sbd *sdp);
77void gfs2_log_release_revokes(struct gfs2_sbd *sdp, unsigned int revokes);
78void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks);
79bool gfs2_log_try_reserve(struct gfs2_sbd *sdp, struct gfs2_trans *tr,
80 unsigned int *extra_revokes);
81void gfs2_log_reserve(struct gfs2_sbd *sdp, struct gfs2_trans *tr,
82 unsigned int *extra_revokes);
83void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
84 u64 seq, u32 tail, u32 lblock, u32 flags,
85 blk_opf_t op_flags);
86void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl,
87 u32 type);
88void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
89void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc);
90void log_flush_wait(struct gfs2_sbd *sdp);
91
92int gfs2_logd(void *data);
93void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
94void gfs2_glock_remove_revoke(struct gfs2_glock *gl);
95void gfs2_flush_revokes(struct gfs2_sbd *sdp);
96void gfs2_ail_drain(struct gfs2_sbd *sdp);
97
98#endif /* __LOG_DOT_H__ */
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5 */
6
7#ifndef __LOG_DOT_H__
8#define __LOG_DOT_H__
9
10#include <linux/list.h>
11#include <linux/spinlock.h>
12#include <linux/writeback.h>
13#include "incore.h"
14#include "inode.h"
15
16/**
17 * gfs2_log_lock - acquire the right to mess with the log manager
18 * @sdp: the filesystem
19 *
20 */
21
22static inline void gfs2_log_lock(struct gfs2_sbd *sdp)
23__acquires(&sdp->sd_log_lock)
24{
25 spin_lock(&sdp->sd_log_lock);
26}
27
28/**
29 * gfs2_log_unlock - release the right to mess with the log manager
30 * @sdp: the filesystem
31 *
32 */
33
34static inline void gfs2_log_unlock(struct gfs2_sbd *sdp)
35__releases(&sdp->sd_log_lock)
36{
37 spin_unlock(&sdp->sd_log_lock);
38}
39
40static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp,
41 unsigned int value)
42{
43 if (++value == sdp->sd_jdesc->jd_blocks) {
44 value = 0;
45 }
46 sdp->sd_log_head = sdp->sd_log_tail = value;
47}
48
49static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip)
50{
51 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
52
53 if (gfs2_is_jdata(ip) || !gfs2_is_ordered(sdp))
54 return;
55
56 if (!test_bit(GIF_ORDERED, &ip->i_flags)) {
57 spin_lock(&sdp->sd_ordered_lock);
58 if (!test_and_set_bit(GIF_ORDERED, &ip->i_flags))
59 list_add(&ip->i_ordered, &sdp->sd_log_ordered);
60 spin_unlock(&sdp->sd_ordered_lock);
61 }
62}
63extern void gfs2_ordered_del_inode(struct gfs2_inode *ip);
64extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct,
65 unsigned int ssize);
66
67extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks);
68extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks);
69extern void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
70 u64 seq, u32 tail, u32 lblock, u32 flags,
71 int op_flags);
72extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl,
73 u32 type);
74extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
75extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc);
76
77extern void gfs2_log_shutdown(struct gfs2_sbd *sdp);
78extern int gfs2_logd(void *data);
79extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
80extern void gfs2_write_revokes(struct gfs2_sbd *sdp);
81
82#endif /* __LOG_DOT_H__ */