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David Teiglandb3b94fa2006-01-16 16:50:04 +00001/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Bob Petersond0109bf2008-01-28 11:20:10 -06003 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
David Teiglandb3b94fa2006-01-16 16:50:04 +00004 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -04007 * of the GNU General Public License version 2.
David Teiglandb3b94fa2006-01-16 16:50:04 +00008 */
9
10#ifndef __LOPS_DOT_H__
11#define __LOPS_DOT_H__
12
Steven Whitehousef2f7ba52006-09-05 10:39:21 -040013#include <linux/list.h>
14#include "incore.h"
15
Robert Peterson2332c442007-06-18 14:50:20 -050016#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
Steven Whitehouseb09e5932006-04-07 11:17:32 -040023extern 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;
Steven Whitehouseb09e5932006-04-07 11:17:32 -040026extern const struct gfs2_log_operations gfs2_databuf_lops;
David Teiglandb3b94fa2006-01-16 16:50:04 +000027
Steven Whitehouseb09e5932006-04-07 11:17:32 -040028extern const struct gfs2_log_operations *gfs2_log_ops[];
Steven Whitehousee8c92ed2012-04-16 09:28:31 +010029extern void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page);
30extern void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int rw);
Steven Whitehouse767f4332012-12-14 12:52:14 +000031extern void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +000032
Robert Peterson2332c442007-06-18 14:50:20 -050033static 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
Steven Whitehoused69a3c62014-02-21 15:22:35 +000049static inline void lops_before_commit(struct gfs2_sbd *sdp,
50 struct gfs2_trans *tr)
David Teiglandb3b94fa2006-01-16 16:50:04 +000051{
52 int x;
53 for (x = 0; gfs2_log_ops[x]; x++)
54 if (gfs2_log_ops[x]->lo_before_commit)
Steven Whitehoused69a3c62014-02-21 15:22:35 +000055 gfs2_log_ops[x]->lo_before_commit(sdp, tr);
David Teiglandb3b94fa2006-01-16 16:50:04 +000056}
57
Benjamin Marzinski16ca9412013-04-05 20:31:46 -050058static inline void lops_after_commit(struct gfs2_sbd *sdp,
59 struct gfs2_trans *tr)
David Teiglandb3b94fa2006-01-16 16:50:04 +000060{
61 int x;
62 for (x = 0; gfs2_log_ops[x]; x++)
63 if (gfs2_log_ops[x]->lo_after_commit)
Benjamin Marzinski16ca9412013-04-05 20:31:46 -050064 gfs2_log_ops[x]->lo_after_commit(sdp, tr);
David Teiglandb3b94fa2006-01-16 16:50:04 +000065}
66
67static inline void lops_before_scan(struct gfs2_jdesc *jd,
Al Viro55167622006-10-13 21:47:13 -040068 struct gfs2_log_header_host *head,
David Teiglandb3b94fa2006-01-16 16:50:04 +000069 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