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> |
Steven Whitehouse | 4667a0e | 2011-04-18 14:18:09 +0100 | [diff] [blame] | 15 | #include <linux/writeback.h> |
Steven Whitehouse | f2f7ba5 | 2006-09-05 10:39:21 -0400 | [diff] [blame] | 16 | #include "incore.h" |
| 17 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 18 | /** |
| 19 | * gfs2_log_lock - acquire the right to mess with the log manager |
| 20 | * @sdp: the filesystem |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | static inline void gfs2_log_lock(struct gfs2_sbd *sdp) |
Harvey Harrison | 2d81afb | 2008-05-29 18:27:51 -0700 | [diff] [blame] | 25 | __acquires(&sdp->sd_log_lock) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 26 | { |
| 27 | spin_lock(&sdp->sd_log_lock); |
| 28 | } |
| 29 | |
| 30 | /** |
| 31 | * gfs2_log_unlock - release the right to mess with the log manager |
| 32 | * @sdp: the filesystem |
| 33 | * |
| 34 | */ |
| 35 | |
| 36 | static inline void gfs2_log_unlock(struct gfs2_sbd *sdp) |
Harvey Harrison | 2d81afb | 2008-05-29 18:27:51 -0700 | [diff] [blame] | 37 | __releases(&sdp->sd_log_lock) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 38 | { |
| 39 | spin_unlock(&sdp->sd_log_lock); |
| 40 | } |
| 41 | |
| 42 | static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp, |
| 43 | unsigned int value) |
| 44 | { |
| 45 | if (++value == sdp->sd_jdesc->jd_blocks) { |
| 46 | value = 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 47 | } |
| 48 | sdp->sd_log_head = sdp->sd_log_tail = value; |
| 49 | } |
| 50 | |
Bob Peterson | ed4878e | 2010-05-20 23:30:11 -0400 | [diff] [blame] | 51 | extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 52 | unsigned int ssize); |
| 53 | |
Bob Peterson | ed4878e | 2010-05-20 23:30:11 -0400 | [diff] [blame] | 54 | extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks); |
| 55 | extern void gfs2_log_incr_head(struct gfs2_sbd *sdp); |
Steven Whitehouse | 47ac553 | 2012-02-03 15:21:59 +0000 | [diff] [blame^] | 56 | extern u64 gfs2_log_bmap(struct gfs2_sbd *sdp, unsigned int lbn); |
Bob Peterson | ed4878e | 2010-05-20 23:30:11 -0400 | [diff] [blame] | 57 | extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl); |
| 58 | extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans); |
| 59 | extern void gfs2_remove_from_ail(struct gfs2_bufdata *bd); |
Steven Whitehouse | 4667a0e | 2011-04-18 14:18:09 +0100 | [diff] [blame] | 60 | extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc); |
Steven Whitehouse | 2bcd610 | 2007-11-08 14:25:12 +0000 | [diff] [blame] | 61 | |
Bob Peterson | ed4878e | 2010-05-20 23:30:11 -0400 | [diff] [blame] | 62 | extern void gfs2_log_shutdown(struct gfs2_sbd *sdp); |
| 63 | extern void gfs2_meta_syncfs(struct gfs2_sbd *sdp); |
| 64 | extern int gfs2_logd(void *data); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 65 | |
| 66 | #endif /* __LOG_DOT_H__ */ |