1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
5 */
6
7 #ifndef __LOPS_DOT_H__
8 #define __LOPS_DOT_H__
9
10 #include <linux/list.h>
11 #include "incore.h"
12
13 #define BUF_OFFSET \
14 ((sizeof(struct gfs2_log_descriptor) + sizeof(__be64) - 1) & \
15 ~(sizeof(__be64) - 1))
16 #define DATABUF_OFFSET \
17 ((sizeof(struct gfs2_log_descriptor) + (2 * sizeof(__be64) - 1)) & \
18 ~(2 * sizeof(__be64) - 1))
19
20 extern const struct gfs2_log_operations *gfs2_log_ops[];
21 extern void gfs2_log_incr_head(struct gfs2_sbd *sdp);
22 extern u64 gfs2_log_bmap(struct gfs2_jdesc *jd, unsigned int lbn);
23 extern void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page,
24 unsigned size, unsigned offset, u64 blkno);
25 extern void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page);
26 extern void gfs2_log_submit_bio(struct bio **biop, int opf);
27 extern void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh);
28 extern int gfs2_find_jhead(struct gfs2_jdesc *jd,
29 struct gfs2_log_header_host *head, bool keep_cache);
buf_limit(struct gfs2_sbd * sdp)30 static inline unsigned int buf_limit(struct gfs2_sbd *sdp)
31 {
32 unsigned int limit;
33
34 limit = (sdp->sd_sb.sb_bsize - BUF_OFFSET) / sizeof(__be64);
35 return limit;
36 }
37
databuf_limit(struct gfs2_sbd * sdp)38 static inline unsigned int databuf_limit(struct gfs2_sbd *sdp)
39 {
40 unsigned int limit;
41
42 limit = (sdp->sd_sb.sb_bsize - DATABUF_OFFSET) / (2 * sizeof(__be64));
43 return limit;
44 }
45
lops_before_commit(struct gfs2_sbd * sdp,struct gfs2_trans * tr)46 static inline void lops_before_commit(struct gfs2_sbd *sdp,
47 struct gfs2_trans *tr)
48 {
49 int x;
50 for (x = 0; gfs2_log_ops[x]; x++)
51 if (gfs2_log_ops[x]->lo_before_commit)
52 gfs2_log_ops[x]->lo_before_commit(sdp, tr);
53 }
54
lops_after_commit(struct gfs2_sbd * sdp,struct gfs2_trans * tr)55 static inline void lops_after_commit(struct gfs2_sbd *sdp,
56 struct gfs2_trans *tr)
57 {
58 int x;
59 for (x = 0; gfs2_log_ops[x]; x++)
60 if (gfs2_log_ops[x]->lo_after_commit)
61 gfs2_log_ops[x]->lo_after_commit(sdp, tr);
62 }
63
lops_before_scan(struct gfs2_jdesc * jd,struct gfs2_log_header_host * head,unsigned int pass)64 static inline void lops_before_scan(struct gfs2_jdesc *jd,
65 struct gfs2_log_header_host *head,
66 unsigned int pass)
67 {
68 int x;
69 for (x = 0; gfs2_log_ops[x]; x++)
70 if (gfs2_log_ops[x]->lo_before_scan)
71 gfs2_log_ops[x]->lo_before_scan(jd, head, pass);
72 }
73
lops_scan_elements(struct gfs2_jdesc * jd,u32 start,struct gfs2_log_descriptor * ld,__be64 * ptr,unsigned int pass)74 static inline int lops_scan_elements(struct gfs2_jdesc *jd, u32 start,
75 struct gfs2_log_descriptor *ld,
76 __be64 *ptr,
77 unsigned int pass)
78 {
79 int x, error;
80 for (x = 0; gfs2_log_ops[x]; x++)
81 if (gfs2_log_ops[x]->lo_scan_elements) {
82 error = gfs2_log_ops[x]->lo_scan_elements(jd, start,
83 ld, ptr, pass);
84 if (error)
85 return error;
86 }
87
88 return 0;
89 }
90
lops_after_scan(struct gfs2_jdesc * jd,int error,unsigned int pass)91 static inline void lops_after_scan(struct gfs2_jdesc *jd, int error,
92 unsigned int pass)
93 {
94 int x;
95 for (x = 0; gfs2_log_ops[x]; x++)
96 if (gfs2_log_ops[x]->lo_before_scan)
97 gfs2_log_ops[x]->lo_after_scan(jd, error, pass);
98 }
99
100 #endif /* __LOPS_DOT_H__ */
101
102