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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
4 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
8 */
9
10#ifndef __LOG_DOT_H__
11#define __LOG_DOT_H__
12
13#include <linux/list.h>
14#include <linux/spinlock.h>
15#include "incore.h"
16
17/**
18 * gfs2_log_lock - acquire the right to mess with the log manager
19 * @sdp: the filesystem
20 *
21 */
22
23static inline void gfs2_log_lock(struct gfs2_sbd *sdp)
24__acquires(&sdp->sd_log_lock)
25{
26 spin_lock(&sdp->sd_log_lock);
27}
28
29/**
30 * gfs2_log_unlock - release the right to mess with the log manager
31 * @sdp: the filesystem
32 *
33 */
34
35static inline void gfs2_log_unlock(struct gfs2_sbd *sdp)
36__releases(&sdp->sd_log_lock)
37{
38 spin_unlock(&sdp->sd_log_lock);
39}
40
41static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp,
42 unsigned int value)
43{
44 if (++value == sdp->sd_jdesc->jd_blocks) {
45 value = 0;
46 }
47 sdp->sd_log_head = sdp->sd_log_tail = value;
48}
49
50unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct,
51 unsigned int ssize);
52
53int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks);
54void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks);
55void gfs2_log_incr_head(struct gfs2_sbd *sdp);
56
57struct buffer_head *gfs2_log_get_buf(struct gfs2_sbd *sdp);
58struct buffer_head *gfs2_log_fake_buf(struct gfs2_sbd *sdp,
59 struct buffer_head *real);
60void __gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl);
61
62static inline void gfs2_log_flush(struct gfs2_sbd *sbd, struct gfs2_glock *gl)
63{
64 if (!gl || test_bit(GLF_LFLUSH, &gl->gl_flags))
65 __gfs2_log_flush(sbd, gl);
66}
67
68void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
69void gfs2_remove_from_ail(struct gfs2_bufdata *bd);
70
71void gfs2_log_shutdown(struct gfs2_sbd *sdp);
72void gfs2_meta_syncfs(struct gfs2_sbd *sdp);
73int gfs2_logd(void *data);
74
75#endif /* __LOG_DOT_H__ */