summaryrefslogtreecommitdiff
path: root/fs/gfs2/lops.h
blob: 31b6dd0d2e5d80ef23b900a4b91d94353221562d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
 * Copyright (C) 2004-2008 Red Hat, Inc.  All rights reserved.
 */

#ifndef __LOPS_DOT_H__
#define __LOPS_DOT_H__

#include <linux/list.h>
#include "incore.h"

extern const struct gfs2_log_operations *gfs2_log_ops[];
extern void gfs2_log_incr_head(struct gfs2_sbd *sdp);
extern u64 gfs2_log_bmap(struct gfs2_jdesc *jd, unsigned int lbn);
extern void gfs2_log_write(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
			   struct page *page, unsigned size, unsigned offset,
			   u64 blkno);
extern void gfs2_log_submit_bio(struct bio **biop, int opf);
extern void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh);
extern int gfs2_find_jhead(struct gfs2_jdesc *jd,
			   struct gfs2_log_header_host *head, bool keep_cache);
static inline unsigned int buf_limit(struct gfs2_sbd *sdp)
{
	return sdp->sd_ldptrs;
}

static inline unsigned int databuf_limit(struct gfs2_sbd *sdp)
{
	return sdp->sd_ldptrs / 2;
}

static inline void lops_before_commit(struct gfs2_sbd *sdp,
				      struct gfs2_trans *tr)
{
	int x;
	for (x = 0; gfs2_log_ops[x]; x++)
		if (gfs2_log_ops[x]->lo_before_commit)
			gfs2_log_ops[x]->lo_before_commit(sdp, tr);
}

static inline void lops_after_commit(struct gfs2_sbd *sdp,
				     struct gfs2_trans *tr)
{
	int x;
	for (x = 0; gfs2_log_ops[x]; x++)
		if (gfs2_log_ops[x]->lo_after_commit)
			gfs2_log_ops[x]->lo_after_commit(sdp, tr);
}

static inline void lops_before_scan(struct gfs2_jdesc *jd,
				    struct gfs2_log_header_host *head,
				    unsigned int pass)
{
	int x;
	for (x = 0; gfs2_log_ops[x]; x++)
		if (gfs2_log_ops[x]->lo_before_scan)
			gfs2_log_ops[x]->lo_before_scan(jd, head, pass);
}

static inline int lops_scan_elements(struct gfs2_jdesc *jd, u32 start,
				     struct gfs2_log_descriptor *ld,
				     __be64 *ptr,
				     unsigned int pass)
{
	int x, error;
	for (x = 0; gfs2_log_ops[x]; x++)
		if (gfs2_log_ops[x]->lo_scan_elements) {
			error = gfs2_log_ops[x]->lo_scan_elements(jd, start,
								  ld, ptr, pass);
			if (error)
				return error;
		}

	return 0;
}

static inline void lops_after_scan(struct gfs2_jdesc *jd, int error,
				   unsigned int pass)
{
	int x;
	for (x = 0; gfs2_log_ops[x]; x++)
		if (gfs2_log_ops[x]->lo_before_scan)
			gfs2_log_ops[x]->lo_after_scan(jd, error, pass);
}

#endif /* __LOPS_DOT_H__ */