| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
| 3 | * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. |
| 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 |
| 7 | * of the GNU General Public License v.2. |
| 8 | */ |
| 9 | |
| 10 | #ifndef __LOG_DOT_H__ |
| 11 | #define __LOG_DOT_H__ |
| 12 | |
| 13 | /** |
| 14 | * gfs2_log_lock - acquire the right to mess with the log manager |
| 15 | * @sdp: the filesystem |
| 16 | * |
| 17 | */ |
| 18 | |
| 19 | static inline void gfs2_log_lock(struct gfs2_sbd *sdp) |
| 20 | { |
| 21 | spin_lock(&sdp->sd_log_lock); |
| 22 | } |
| 23 | |
| 24 | /** |
| 25 | * gfs2_log_unlock - release the right to mess with the log manager |
| 26 | * @sdp: the filesystem |
| 27 | * |
| 28 | */ |
| 29 | |
| 30 | static inline void gfs2_log_unlock(struct gfs2_sbd *sdp) |
| 31 | { |
| 32 | spin_unlock(&sdp->sd_log_lock); |
| 33 | } |
| 34 | |
| 35 | static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp, |
| 36 | unsigned int value) |
| 37 | { |
| 38 | if (++value == sdp->sd_jdesc->jd_blocks) { |
| 39 | value = 0; |
| 40 | sdp->sd_log_wraps++; |
| 41 | } |
| 42 | sdp->sd_log_head = sdp->sd_log_tail = value; |
| 43 | } |
| 44 | |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 45 | unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct, |
| 46 | unsigned int ssize); |
| 47 | |
| 48 | void gfs2_ail1_start(struct gfs2_sbd *sdp, int flags); |
| 49 | int gfs2_ail1_empty(struct gfs2_sbd *sdp, int flags); |
| 50 | |
| 51 | int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks); |
| 52 | void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks); |
| 53 | |
| 54 | struct buffer_head *gfs2_log_get_buf(struct gfs2_sbd *sdp); |
| 55 | struct buffer_head *gfs2_log_fake_buf(struct gfs2_sbd *sdp, |
| 56 | struct buffer_head *real); |
| 57 | |
| 58 | #define gfs2_log_flush(sdp) gfs2_log_flush_i((sdp), NULL) |
| 59 | #define gfs2_log_flush_glock(gl) gfs2_log_flush_i((gl)->gl_sbd, (gl)) |
| 60 | void gfs2_log_flush_i(struct gfs2_sbd *sdp, struct gfs2_glock *gl); |
| 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__ */ |