Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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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 <linux/writeback.h>
16#include "incore.h"
17#include "inode.h"
18
19/**
20 * gfs2_log_lock - acquire the right to mess with the log manager
21 * @sdp: the filesystem
22 *
23 */
24
25static inline void gfs2_log_lock(struct gfs2_sbd *sdp)
26__acquires(&sdp->sd_log_lock)
27{
28 spin_lock(&sdp->sd_log_lock);
29}
30
31/**
32 * gfs2_log_unlock - release the right to mess with the log manager
33 * @sdp: the filesystem
34 *
35 */
36
37static inline void gfs2_log_unlock(struct gfs2_sbd *sdp)
38__releases(&sdp->sd_log_lock)
39{
40 spin_unlock(&sdp->sd_log_lock);
41}
42
43static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp,
44 unsigned int value)
45{
46 if (++value == sdp->sd_jdesc->jd_blocks) {
47 value = 0;
48 }
49 sdp->sd_log_head = sdp->sd_log_tail = value;
50}
51
52static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip)
53{
54 struct gfs2_sbd *sdp;
55
56 if (!gfs2_is_ordered(ip))
57 return;
58
59 sdp = GFS2_SB(&ip->i_inode);
60 if (!test_bit(GIF_ORDERED, &ip->i_flags)) {
61 spin_lock(&sdp->sd_ordered_lock);
62 if (!test_and_set_bit(GIF_ORDERED, &ip->i_flags))
63 list_add(&ip->i_ordered, &sdp->sd_log_le_ordered);
64 spin_unlock(&sdp->sd_ordered_lock);
65 }
66}
67extern void gfs2_ordered_del_inode(struct gfs2_inode *ip);
68extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct,
69 unsigned int ssize);
70
71extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks);
72extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks);
73extern void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
74 u64 seq, u32 tail, u32 flags, int op_flags);
75extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl,
76 u32 type);
77extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
78extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc);
79
80extern void gfs2_log_shutdown(struct gfs2_sbd *sdp);
81extern int gfs2_logd(void *data);
82extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
83extern void gfs2_write_revokes(struct gfs2_sbd *sdp);
84
85#endif /* __LOG_DOT_H__ */