diff options
| author | David Teigland | 2006-01-16 16:50:04 +0000 |
|---|---|---|
| committer | Steven Whitehouse | 2006-01-16 16:50:04 +0000 |
| commit | b3b94faa5fe5968827ba0640ee9fba4b3e7f736e (patch) | |
| tree | 70bd6068b050d2c46e338484f8b03fae4365c6c3 /fs/gfs2/log.h | |
| parent | f7825dcf8c7301cfd3724eb40c5b443cc85ab7b8 (diff) | |
[GFS2] The core of GFS2
This patch contains all the core files for GFS2.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/log.h')
| -rw-r--r-- | fs/gfs2/log.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/fs/gfs2/log.h b/fs/gfs2/log.h new file mode 100644 index 000000000000..4413cda81154 --- /dev/null +++ b/fs/gfs2/log.h @@ -0,0 +1,68 @@ +/* + * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. + * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. + * + * This copyrighted material is made available to anyone wishing to use, + * modify, copy, or redistribute it subject to the terms and conditions + * of the GNU General Public License v.2. + */ + +#ifndef __LOG_DOT_H__ +#define __LOG_DOT_H__ + +/** + * gfs2_log_lock - acquire the right to mess with the log manager + * @sdp: the filesystem + * + */ + +static inline void gfs2_log_lock(struct gfs2_sbd *sdp) +{ + spin_lock(&sdp->sd_log_lock); +} + +/** + * gfs2_log_unlock - release the right to mess with the log manager + * @sdp: the filesystem + * + */ + +static inline void gfs2_log_unlock(struct gfs2_sbd *sdp) +{ + spin_unlock(&sdp->sd_log_lock); +} + +static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp, + unsigned int value) +{ + if (++value == sdp->sd_jdesc->jd_blocks) { + value = 0; + sdp->sd_log_wraps++; + } + sdp->sd_log_head = sdp->sd_log_tail = value; +} + +void gfs2_lock_for_flush(struct gfs2_sbd *sdp); +void gfs2_unlock_from_flush(struct gfs2_sbd *sdp); + +unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct, + unsigned int ssize); + +void gfs2_ail1_start(struct gfs2_sbd *sdp, int flags); +int gfs2_ail1_empty(struct gfs2_sbd *sdp, int flags); + +int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks); +void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks); + +struct buffer_head *gfs2_log_get_buf(struct gfs2_sbd *sdp); +struct buffer_head *gfs2_log_fake_buf(struct gfs2_sbd *sdp, + struct buffer_head *real); + +#define gfs2_log_flush(sdp) gfs2_log_flush_i((sdp), NULL) +#define gfs2_log_flush_glock(gl) gfs2_log_flush_i((gl)->gl_sbd, (gl)) +void gfs2_log_flush_i(struct gfs2_sbd *sdp, struct gfs2_glock *gl); +void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans); + +void gfs2_log_shutdown(struct gfs2_sbd *sdp); + +#endif /* __LOG_DOT_H__ */ |