Linux kernel mirror (for testing)
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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_ordered_add_inode(struct gfs2_inode *ip)
48{
49 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
50
51 if (gfs2_is_jdata(ip) || !gfs2_is_ordered(sdp))
52 return;
53
54 if (list_empty(&ip->i_ordered)) {
55 spin_lock(&sdp->sd_ordered_lock);
56 if (list_empty(&ip->i_ordered))
57 list_add(&ip->i_ordered, &sdp->sd_log_ordered);
58 spin_unlock(&sdp->sd_ordered_lock);
59 }
60}
61
62void gfs2_ordered_del_inode(struct gfs2_inode *ip);
63unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct);
64void gfs2_remove_from_ail(struct gfs2_bufdata *bd);
65bool gfs2_log_is_empty(struct gfs2_sbd *sdp);
66void gfs2_log_release_revokes(struct gfs2_sbd *sdp, unsigned int revokes);
67void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks);
68bool gfs2_log_try_reserve(struct gfs2_sbd *sdp, struct gfs2_trans *tr,
69 unsigned int *extra_revokes);
70void gfs2_log_reserve(struct gfs2_sbd *sdp, struct gfs2_trans *tr,
71 unsigned int *extra_revokes);
72void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
73 u64 seq, u32 tail, u32 lblock, u32 flags,
74 blk_opf_t op_flags);
75void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl,
76 u32 type);
77void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
78void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc);
79void log_flush_wait(struct gfs2_sbd *sdp);
80
81int gfs2_logd(void *data);
82void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
83void gfs2_glock_remove_revoke(struct gfs2_glock *gl);
84void gfs2_flush_revokes(struct gfs2_sbd *sdp);
85void gfs2_ail_drain(struct gfs2_sbd *sdp);
86
87#endif /* __LOG_DOT_H__ */