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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
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 v.2. | |
8 | */ | |
9 | ||
10 | #ifndef __LOG_DOT_H__ | |
11 | #define __LOG_DOT_H__ | |
12 | ||
13 | /** | |
14 | * gfs2_log_lock - acquire the right to mess with the log manager | |
15 | * @sdp: the filesystem | |
16 | * | |
17 | */ | |
18 | ||
19 | static inline void gfs2_log_lock(struct gfs2_sbd *sdp) | |
20 | { | |
21 | spin_lock(&sdp->sd_log_lock); | |
22 | } | |
23 | ||
24 | /** | |
25 | * gfs2_log_unlock - release the right to mess with the log manager | |
26 | * @sdp: the filesystem | |
27 | * | |
28 | */ | |
29 | ||
30 | static inline void gfs2_log_unlock(struct gfs2_sbd *sdp) | |
31 | { | |
32 | spin_unlock(&sdp->sd_log_lock); | |
33 | } | |
34 | ||
35 | static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp, | |
36 | unsigned int value) | |
37 | { | |
38 | if (++value == sdp->sd_jdesc->jd_blocks) { | |
39 | value = 0; | |
b3b94faa DT |
40 | } |
41 | sdp->sd_log_head = sdp->sd_log_tail = value; | |
42 | } | |
43 | ||
b3b94faa DT |
44 | unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct, |
45 | unsigned int ssize); | |
46 | ||
47 | void gfs2_ail1_start(struct gfs2_sbd *sdp, int flags); | |
48 | int gfs2_ail1_empty(struct gfs2_sbd *sdp, int flags); | |
49 | ||
50 | int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks); | |
51 | void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks); | |
52 | ||
53 | struct buffer_head *gfs2_log_get_buf(struct gfs2_sbd *sdp); | |
54 | struct buffer_head *gfs2_log_fake_buf(struct gfs2_sbd *sdp, | |
55 | struct buffer_head *real); | |
b09e593d | 56 | void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl); |
b3b94faa DT |
57 | void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans); |
58 | ||
59 | void gfs2_log_shutdown(struct gfs2_sbd *sdp); | |
60 | ||
61 | #endif /* __LOG_DOT_H__ */ |