blob: 7711528165088002a3601de4c57ef101eae755ba [file] [log] [blame]
David Teiglandb3b94fa2006-01-16 16:50:04 +00001/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Steven Whitehouse3a8a9a12006-05-18 15:09:15 -04003 * Copyright (C) 2004-2006 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 __LOG_DOT_H__
11#define __LOG_DOT_H__
12
Steven Whitehousef2f7ba52006-09-05 10:39:21 -040013#include <linux/list.h>
14#include <linux/spinlock.h>
15#include "incore.h"
16
David Teiglandb3b94fa2006-01-16 16:50:04 +000017/**
18 * gfs2_log_lock - acquire the right to mess with the log manager
19 * @sdp: the filesystem
20 *
21 */
22
23static inline void gfs2_log_lock(struct gfs2_sbd *sdp)
24{
25 spin_lock(&sdp->sd_log_lock);
26}
27
28/**
29 * gfs2_log_unlock - release the right to mess with the log manager
30 * @sdp: the filesystem
31 *
32 */
33
34static inline void gfs2_log_unlock(struct gfs2_sbd *sdp)
35{
36 spin_unlock(&sdp->sd_log_lock);
37}
38
39static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp,
40 unsigned int value)
41{
42 if (++value == sdp->sd_jdesc->jd_blocks) {
43 value = 0;
David Teiglandb3b94fa2006-01-16 16:50:04 +000044 }
45 sdp->sd_log_head = sdp->sd_log_tail = value;
46}
47
David Teiglandb3b94fa2006-01-16 16:50:04 +000048unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct,
49 unsigned int ssize);
50
David Teiglandb3b94fa2006-01-16 16:50:04 +000051int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks);
52void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks);
Steven Whitehouse16615be2007-09-17 10:59:52 +010053void gfs2_log_incr_head(struct gfs2_sbd *sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +000054
55struct buffer_head *gfs2_log_get_buf(struct gfs2_sbd *sdp);
56struct buffer_head *gfs2_log_fake_buf(struct gfs2_sbd *sdp,
57 struct buffer_head *real);
Steven Whitehouse2bcd6102007-11-08 14:25:12 +000058void __gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl);
59
60static inline void gfs2_log_flush(struct gfs2_sbd *sbd, struct gfs2_glock *gl)
61{
62 if (!gl || test_bit(GLF_LFLUSH, &gl->gl_flags))
63 __gfs2_log_flush(sbd, gl);
64}
65
David Teiglandb3b94fa2006-01-16 16:50:04 +000066void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
Steven Whitehousef91a0d32007-10-15 16:29:05 +010067void gfs2_remove_from_ail(struct gfs2_bufdata *bd);
David Teiglandb3b94fa2006-01-16 16:50:04 +000068
69void gfs2_log_shutdown(struct gfs2_sbd *sdp);
Steven Whitehousea25311c2006-11-23 11:06:35 -050070void gfs2_meta_syncfs(struct gfs2_sbd *sdp);
Steven Whitehouseec69b182007-11-09 10:01:41 +000071int gfs2_logd(void *data);
David Teiglandb3b94fa2006-01-16 16:50:04 +000072
73#endif /* __LOG_DOT_H__ */