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
13extern const struct gfs2_log_operations *gfs2_log_ops[];
14
15void gfs2_log_incr_head(struct gfs2_sbd *sdp);
16u64 gfs2_log_bmap(struct gfs2_jdesc *jd, unsigned int lbn);
17void gfs2_log_write(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
18		    struct page *page, unsigned size, unsigned offset,
19		    u64 blkno);
20void gfs2_log_submit_bio(struct bio **biop, blk_opf_t opf);
21void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh);
22int gfs2_find_jhead(struct gfs2_jdesc *jd,
23		    struct gfs2_log_header_host *head, bool keep_cache);
24void gfs2_drain_revokes(struct gfs2_sbd *sdp);
25
26static inline unsigned int buf_limit(struct gfs2_sbd *sdp)
27{
28	return sdp->sd_ldptrs;
29}
30
31static inline unsigned int databuf_limit(struct gfs2_sbd *sdp)
32{
33	return sdp->sd_ldptrs / 2;
34}
35
36static 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
45static 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
54static 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
64static 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
81static 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