| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
| Steven Whitehouse | 3a8a9a1 | 2006-05-18 15:09:15 -0400 | [diff] [blame] | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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 |
| Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 7 | * of the GNU General Public License version 2. |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #ifndef __LOG_DOT_H__ |
| 11 | #define __LOG_DOT_H__ |
| 12 | |
| Steven Whitehouse | f2f7ba5 | 2006-09-05 10:39:21 -0400 | [diff] [blame] | 13 | #include <linux/list.h> |
| 14 | #include <linux/spinlock.h> |
| 15 | #include "incore.h" |
| 16 | |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 17 | /** |
| 18 | * gfs2_log_lock - acquire the right to mess with the log manager |
| 19 | * @sdp: the filesystem |
| 20 | * |
| 21 | */ |
| 22 | |
| 23 | static 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 | |
| 34 | static inline void gfs2_log_unlock(struct gfs2_sbd *sdp) |
| 35 | { |
| 36 | spin_unlock(&sdp->sd_log_lock); |
| 37 | } |
| 38 | |
| 39 | static 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 Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 44 | } |
| 45 | sdp->sd_log_head = sdp->sd_log_tail = value; |
| 46 | } |
| 47 | |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 48 | unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct, |
| 49 | unsigned int ssize); |
| 50 | |
| 51 | void gfs2_ail1_start(struct gfs2_sbd *sdp, int flags); |
| 52 | int gfs2_ail1_empty(struct gfs2_sbd *sdp, int flags); |
| 53 | |
| 54 | int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks); |
| 55 | void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks); |
| 56 | |
| 57 | struct buffer_head *gfs2_log_get_buf(struct gfs2_sbd *sdp); |
| 58 | struct buffer_head *gfs2_log_fake_buf(struct gfs2_sbd *sdp, |
| 59 | struct buffer_head *real); |
| Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 60 | void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl); |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 61 | void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans); |
| 62 | |
| 63 | void gfs2_log_shutdown(struct gfs2_sbd *sdp); |
| 64 | |
| 65 | #endif /* __LOG_DOT_H__ */ |