1 /*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2008 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 __LOPS_DOT_H__
11 #define __LOPS_DOT_H__
12
13 #include <linux/list.h>
14 #include "incore.h"
15
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
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;
26 extern const struct gfs2_log_operations gfs2_databuf_lops;
27
28 extern const struct gfs2_log_operations *gfs2_log_ops[];
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);
32 extern void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page);
33 extern void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int op, int op_flags);
34 extern void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh);
35
buf_limit(struct gfs2_sbd * sdp)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
databuf_limit(struct gfs2_sbd * sdp)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
lops_before_commit(struct gfs2_sbd * sdp,struct gfs2_trans * tr)52 static inline void lops_before_commit(struct gfs2_sbd *sdp,
53 struct gfs2_trans *tr)
54 {
55 int x;
56 for (x = 0; gfs2_log_ops[x]; x++)
57 if (gfs2_log_ops[x]->lo_before_commit)
58 gfs2_log_ops[x]->lo_before_commit(sdp, tr);
59 }
60
lops_after_commit(struct gfs2_sbd * sdp,struct gfs2_trans * tr)61 static inline void lops_after_commit(struct gfs2_sbd *sdp,
62 struct gfs2_trans *tr)
63 {
64 int x;
65 for (x = 0; gfs2_log_ops[x]; x++)
66 if (gfs2_log_ops[x]->lo_after_commit)
67 gfs2_log_ops[x]->lo_after_commit(sdp, tr);
68 }
69
lops_before_scan(struct gfs2_jdesc * jd,struct gfs2_log_header_host * head,unsigned int pass)70 static inline void lops_before_scan(struct gfs2_jdesc *jd,
71 struct gfs2_log_header_host *head,
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
lops_scan_elements(struct gfs2_jdesc * jd,unsigned int start,struct gfs2_log_descriptor * ld,__be64 * ptr,unsigned int pass)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
lops_after_scan(struct gfs2_jdesc * jd,int error,unsigned int pass)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
108