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
 23extern const struct gfs2_log_operations gfs2_glock_lops;
 24extern const struct gfs2_log_operations gfs2_buf_lops;
 25extern const struct gfs2_log_operations gfs2_revoke_lops;
 26extern const struct gfs2_log_operations gfs2_databuf_lops;
 27
 28extern const struct gfs2_log_operations *gfs2_log_ops[];
 29extern void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page);
 30extern void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int rw);
 
 
 
 
 31extern void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh);
 32
 
 
 33static inline unsigned int buf_limit(struct gfs2_sbd *sdp)
 34{
 35	unsigned int limit;
 36
 37	limit = (sdp->sd_sb.sb_bsize - BUF_OFFSET) / sizeof(__be64);
 38	return limit;
 39}
 40
 41static inline unsigned int databuf_limit(struct gfs2_sbd *sdp)
 42{
 43	unsigned int limit;
 44
 45	limit = (sdp->sd_sb.sb_bsize - DATABUF_OFFSET) / (2 * sizeof(__be64));
 46	return limit;
 47}
 48
 49static inline void lops_before_commit(struct gfs2_sbd *sdp,
 50				      struct gfs2_trans *tr)
 51{
 52	int x;
 53	for (x = 0; gfs2_log_ops[x]; x++)
 54		if (gfs2_log_ops[x]->lo_before_commit)
 55			gfs2_log_ops[x]->lo_before_commit(sdp, tr);
 56}
 57
 58static inline void lops_after_commit(struct gfs2_sbd *sdp,
 59				     struct gfs2_trans *tr)
 60{
 61	int x;
 62	for (x = 0; gfs2_log_ops[x]; x++)
 63		if (gfs2_log_ops[x]->lo_after_commit)
 64			gfs2_log_ops[x]->lo_after_commit(sdp, tr);
 65}
 66
 67static inline void lops_before_scan(struct gfs2_jdesc *jd,
 68				    struct gfs2_log_header_host *head,
 69				    unsigned int pass)
 70{
 71	int x;
 72	for (x = 0; gfs2_log_ops[x]; x++)
 73		if (gfs2_log_ops[x]->lo_before_scan)
 74			gfs2_log_ops[x]->lo_before_scan(jd, head, pass);
 75}
 76
 77static inline int lops_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
 78				     struct gfs2_log_descriptor *ld,
 79				     __be64 *ptr,
 80				     unsigned int pass)
 81{
 82	int x, error;
 83	for (x = 0; gfs2_log_ops[x]; x++)
 84		if (gfs2_log_ops[x]->lo_scan_elements) {
 85			error = gfs2_log_ops[x]->lo_scan_elements(jd, start,
 86								  ld, ptr, pass);
 87			if (error)
 88				return error;
 89		}
 90
 91	return 0;
 92}
 93
 94static inline void lops_after_scan(struct gfs2_jdesc *jd, int error,
 95				   unsigned int pass)
 96{
 97	int x;
 98	for (x = 0; gfs2_log_ops[x]; x++)
 99		if (gfs2_log_ops[x]->lo_before_scan)
100			gfs2_log_ops[x]->lo_after_scan(jd, error, pass);
101}
102
103#endif /* __LOPS_DOT_H__ */
104

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