2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
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.
10 #ifndef __LOPS_DOT_H__
11 #define __LOPS_DOT_H__
13 #include <linux/list.h>
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))
23 extern const struct gfs2_log_operations *gfs2_log_ops[];
24 extern u64 gfs2_log_bmap(struct gfs2_sbd *sdp);
25 extern void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page,
26 unsigned size, unsigned offset, u64 blkno);
27 extern void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page);
28 extern void gfs2_log_submit_bio(struct bio **biop, int op, int op_flags);
29 extern void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh);
31 static inline unsigned int buf_limit(struct gfs2_sbd *sdp)
35 limit = (sdp->sd_sb.sb_bsize - BUF_OFFSET) / sizeof(__be64);
39 static inline unsigned int databuf_limit(struct gfs2_sbd *sdp)
43 limit = (sdp->sd_sb.sb_bsize - DATABUF_OFFSET) / (2 * sizeof(__be64));
47 static inline void lops_before_commit(struct gfs2_sbd *sdp,
48 struct gfs2_trans *tr)
51 for (x = 0; gfs2_log_ops[x]; x++)
52 if (gfs2_log_ops[x]->lo_before_commit)
53 gfs2_log_ops[x]->lo_before_commit(sdp, tr);
56 static inline void lops_after_commit(struct gfs2_sbd *sdp,
57 struct gfs2_trans *tr)
60 for (x = 0; gfs2_log_ops[x]; x++)
61 if (gfs2_log_ops[x]->lo_after_commit)
62 gfs2_log_ops[x]->lo_after_commit(sdp, tr);
65 static inline void lops_before_scan(struct gfs2_jdesc *jd,
66 struct gfs2_log_header_host *head,
70 for (x = 0; gfs2_log_ops[x]; x++)
71 if (gfs2_log_ops[x]->lo_before_scan)
72 gfs2_log_ops[x]->lo_before_scan(jd, head, pass);
75 static inline int lops_scan_elements(struct gfs2_jdesc *jd, u32 start,
76 struct gfs2_log_descriptor *ld,
81 for (x = 0; gfs2_log_ops[x]; x++)
82 if (gfs2_log_ops[x]->lo_scan_elements) {
83 error = gfs2_log_ops[x]->lo_scan_elements(jd, start,
92 static inline void lops_after_scan(struct gfs2_jdesc *jd, int error,
96 for (x = 0; gfs2_log_ops[x]; x++)
97 if (gfs2_log_ops[x]->lo_before_scan)
98 gfs2_log_ops[x]->lo_after_scan(jd, error, pass);
101 #endif /* __LOPS_DOT_H__ */