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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
d0109bfa | 3 | * Copyright (C) 2004-2008 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 | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
10 | #ifndef __LOPS_DOT_H__ | |
11 | #define __LOPS_DOT_H__ | |
12 | ||
f2f7ba52 SW |
13 | #include <linux/list.h> |
14 | #include "incore.h" | |
15 | ||
2332c443 RP |
16 | #define BUF_OFFSET \ |
17 | ((sizeof(struct gfs2_log_descriptor) + sizeof(__be64) - 1) & \ | |
18 | ~(sizeof(__be64) - 1)) | |
19 | #define DATABUF_OFFSET \ | |
20 | ((sizeof(struct gfs2_log_descriptor) + (2 * sizeof(__be64) - 1)) & \ | |
21 | ~(2 * sizeof(__be64) - 1)) | |
22 | ||
b09e593d SW |
23 | extern const struct gfs2_log_operations gfs2_glock_lops; |
24 | extern const struct gfs2_log_operations gfs2_buf_lops; | |
25 | extern const struct gfs2_log_operations gfs2_revoke_lops; | |
b09e593d | 26 | extern const struct gfs2_log_operations gfs2_databuf_lops; |
b3b94faa | 27 | |
b09e593d | 28 | extern const struct gfs2_log_operations *gfs2_log_ops[]; |
e8c92ed7 SW |
29 | extern void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page); |
30 | extern void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int rw); | |
767f433f | 31 | extern void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh); |
b3b94faa | 32 | |
2332c443 RP |
33 | static inline unsigned int buf_limit(struct gfs2_sbd *sdp) |
34 | { | |
35 | unsigned int limit; | |
36 | ||
37 | limit = (sdp->sd_sb.sb_bsize - BUF_OFFSET) / sizeof(__be64); | |
38 | return limit; | |
39 | } | |
40 | ||
41 | static inline unsigned int databuf_limit(struct gfs2_sbd *sdp) | |
42 | { | |
43 | unsigned int limit; | |
44 | ||
45 | limit = (sdp->sd_sb.sb_bsize - DATABUF_OFFSET) / (2 * sizeof(__be64)); | |
46 | return limit; | |
47 | } | |
48 | ||
d69a3c65 SW |
49 | static inline void lops_before_commit(struct gfs2_sbd *sdp, |
50 | struct gfs2_trans *tr) | |
b3b94faa DT |
51 | { |
52 | int x; | |
53 | for (x = 0; gfs2_log_ops[x]; x++) | |
54 | if (gfs2_log_ops[x]->lo_before_commit) | |
d69a3c65 | 55 | gfs2_log_ops[x]->lo_before_commit(sdp, tr); |
b3b94faa DT |
56 | } |
57 | ||
16ca9412 BM |
58 | static inline void lops_after_commit(struct gfs2_sbd *sdp, |
59 | struct gfs2_trans *tr) | |
b3b94faa DT |
60 | { |
61 | int x; | |
62 | for (x = 0; gfs2_log_ops[x]; x++) | |
63 | if (gfs2_log_ops[x]->lo_after_commit) | |
16ca9412 | 64 | gfs2_log_ops[x]->lo_after_commit(sdp, tr); |
b3b94faa DT |
65 | } |
66 | ||
67 | static inline void lops_before_scan(struct gfs2_jdesc *jd, | |
55167622 | 68 | struct gfs2_log_header_host *head, |
b3b94faa DT |
69 | unsigned int pass) |
70 | { | |
71 | int x; | |
72 | for (x = 0; gfs2_log_ops[x]; x++) | |
73 | if (gfs2_log_ops[x]->lo_before_scan) | |
74 | gfs2_log_ops[x]->lo_before_scan(jd, head, pass); | |
75 | } | |
76 | ||
77 | static inline int lops_scan_elements(struct gfs2_jdesc *jd, unsigned int start, | |
78 | struct gfs2_log_descriptor *ld, | |
79 | __be64 *ptr, | |
80 | unsigned int pass) | |
81 | { | |
82 | int x, error; | |
83 | for (x = 0; gfs2_log_ops[x]; x++) | |
84 | if (gfs2_log_ops[x]->lo_scan_elements) { | |
85 | error = gfs2_log_ops[x]->lo_scan_elements(jd, start, | |
86 | ld, ptr, pass); | |
87 | if (error) | |
88 | return error; | |
89 | } | |
90 | ||
91 | return 0; | |
92 | } | |
93 | ||
94 | static inline void lops_after_scan(struct gfs2_jdesc *jd, int error, | |
95 | unsigned int pass) | |
96 | { | |
97 | int x; | |
98 | for (x = 0; gfs2_log_ops[x]; x++) | |
99 | if (gfs2_log_ops[x]->lo_before_scan) | |
100 | gfs2_log_ops[x]->lo_after_scan(jd, error, pass); | |
101 | } | |
102 | ||
103 | #endif /* __LOPS_DOT_H__ */ | |
104 |