projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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[]; |
| c1696fb8 BP |
29 | extern u64 gfs2_log_bmap(struct gfs2_sbd *sdp); |
| 30 | extern void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, | |
| 31 | unsigned size, unsigned offset, u64 blkno); | |
| e8c92ed7 | 32 | extern void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page); |
| e1b1afa6 | 33 | extern void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int op, int op_flags); |
| 767f433f | 34 | extern void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh); |
| b3b94faa | 35 | |
| 2332c443 RP |
36 | static inline unsigned int buf_limit(struct gfs2_sbd *sdp) |
| 37 | { | |
| 38 | unsigned int limit; | |
| 39 | ||
| 40 | limit = (sdp->sd_sb.sb_bsize - BUF_OFFSET) / sizeof(__be64); | |
| 41 | return limit; | |
| 42 | } | |
| 43 | ||
| 44 | static inline unsigned int databuf_limit(struct gfs2_sbd *sdp) | |
| 45 | { | |
| 46 | unsigned int limit; | |
| 47 | ||
| 48 | limit = (sdp->sd_sb.sb_bsize - DATABUF_OFFSET) / (2 * sizeof(__be64)); | |
| 49 | return limit; | |
| 50 | } | |
| 51 | ||
| d69a3c65 SW |
52 | static inline void lops_before_commit(struct gfs2_sbd *sdp, |
| 53 | struct gfs2_trans *tr) | |
| b3b94faa DT |
54 | { |
| 55 | int x; | |
| 56 | for (x = 0; gfs2_log_ops[x]; x++) | |
| 57 | if (gfs2_log_ops[x]->lo_before_commit) | |
| d69a3c65 | 58 | gfs2_log_ops[x]->lo_before_commit(sdp, tr); |
| b3b94faa DT |
59 | } |
| 60 | ||
| 16ca9412 BM |
61 | static inline void lops_after_commit(struct gfs2_sbd *sdp, |
| 62 | struct gfs2_trans *tr) | |
| b3b94faa DT |
63 | { |
| 64 | int x; | |
| 65 | for (x = 0; gfs2_log_ops[x]; x++) | |
| 66 | if (gfs2_log_ops[x]->lo_after_commit) | |
| 16ca9412 | 67 | gfs2_log_ops[x]->lo_after_commit(sdp, tr); |
| b3b94faa DT |
68 | } |
| 69 | ||
| 70 | static inline void lops_before_scan(struct gfs2_jdesc *jd, | |
| 55167622 | 71 | struct gfs2_log_header_host *head, |
| b3b94faa DT |
72 | unsigned int pass) |
| 73 | { | |
| 74 | int x; | |
| 75 | for (x = 0; gfs2_log_ops[x]; x++) | |
| 76 | if (gfs2_log_ops[x]->lo_before_scan) | |
| 77 | gfs2_log_ops[x]->lo_before_scan(jd, head, pass); | |
| 78 | } | |
| 79 | ||
| 80 | static inline int lops_scan_elements(struct gfs2_jdesc *jd, unsigned int start, | |
| 81 | struct gfs2_log_descriptor *ld, | |
| 82 | __be64 *ptr, | |
| 83 | unsigned int pass) | |
| 84 | { | |
| 85 | int x, error; | |
| 86 | for (x = 0; gfs2_log_ops[x]; x++) | |
| 87 | if (gfs2_log_ops[x]->lo_scan_elements) { | |
| 88 | error = gfs2_log_ops[x]->lo_scan_elements(jd, start, | |
| 89 | ld, ptr, pass); | |
| 90 | if (error) | |
| 91 | return error; | |
| 92 | } | |
| 93 | ||
| 94 | return 0; | |
| 95 | } | |
| 96 | ||
| 97 | static inline void lops_after_scan(struct gfs2_jdesc *jd, int error, | |
| 98 | unsigned int pass) | |
| 99 | { | |
| 100 | int x; | |
| 101 | for (x = 0; gfs2_log_ops[x]; x++) | |
| 102 | if (gfs2_log_ops[x]->lo_before_scan) | |
| 103 | gfs2_log_ops[x]->lo_after_scan(jd, error, pass); | |
| 104 | } | |
| 105 | ||
| 106 | #endif /* __LOPS_DOT_H__ */ | |
| 107 |