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 extern const struct gfs2_log_operations *gfs2_log_ops[];
14
15 void gfs2_log_incr_head(struct gfs2_sbd *sdp);
16 u64 gfs2_log_bmap(struct gfs2_jdesc *jd, unsigned int lbn);
17 void gfs2_log_write(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
18 struct page *page, unsigned size, unsigned offset,
19 u64 blkno);
20 void gfs2_log_submit_bio(struct bio **biop, blk_opf_t opf);
21 void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh);
22 int gfs2_find_jhead(struct gfs2_jdesc *jd,
23 struct gfs2_log_header_host *head, bool keep_cache);
24 void gfs2_drain_revokes(struct gfs2_sbd *sdp);
25
26 static inline unsigned int buf_limit(struct gfs2_sbd *sdp)
27 {
28 return sdp->sd_ldptrs;
29 }
30
31 static inline unsigned int databuf_limit(struct gfs2_sbd *sdp)
32 {
33 return sdp->sd_ldptrs / 2;
34 }
35
36 static inline void lops_before_commit(struct gfs2_sbd *sdp,
37 struct gfs2_trans *tr)
38 {
39 int x;
40 for (x = 0; gfs2_log_ops[x]; x++)
41 if (gfs2_log_ops[x]->lo_before_commit)
42 gfs2_log_ops[x]->lo_before_commit(sdp, tr);
43 }
44
45 static inline void lops_after_commit(struct gfs2_sbd *sdp,
46 struct gfs2_trans *tr)
47 {
48 int x;
49 for (x = 0; gfs2_log_ops[x]; x++)
50 if (gfs2_log_ops[x]->lo_after_commit)
51 gfs2_log_ops[x]->lo_after_commit(sdp, tr);
52 }
53
54 static inline void lops_before_scan(struct gfs2_jdesc *jd,
55 struct gfs2_log_header_host *head,
56 unsigned int pass)
57 {
58 int x;
59 for (x = 0; gfs2_log_ops[x]; x++)
60 if (gfs2_log_ops[x]->lo_before_scan)
61 gfs2_log_ops[x]->lo_before_scan(jd, head, pass);
62 }
63
64 static inline int lops_scan_elements(struct gfs2_jdesc *jd, u32 start,
65 struct gfs2_log_descriptor *ld,
66 __be64 *ptr,
67 unsigned int pass)
68 {
69 int x, error;
70 for (x = 0; gfs2_log_ops[x]; x++)
71 if (gfs2_log_ops[x]->lo_scan_elements) {
72 error = gfs2_log_ops[x]->lo_scan_elements(jd, start,
73 ld, ptr, pass);
74 if (error)
75 return error;
76 }
77
78 return 0;
79 }
80
81 static inline void lops_after_scan(struct gfs2_jdesc *jd, int error,
82 unsigned int pass)
83 {
84 int x;
85 for (x = 0; gfs2_log_ops[x]; x++)
86 if (gfs2_log_ops[x]->lo_before_scan)
87 gfs2_log_ops[x]->lo_after_scan(jd, error, pass);
88 }
89
90 #endif /* __LOPS_DOT_H__ */
91
92
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