projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 7336d0e6 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| b3b94faa DT |
2 | /* |
| 3 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
| 3a8a9a10 | 4 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
| b3b94faa DT |
5 | */ |
| 6 | ||
| 7 | #ifndef __LOG_DOT_H__ | |
| 8 | #define __LOG_DOT_H__ | |
| 9 | ||
| f2f7ba52 SW |
10 | #include <linux/list.h> |
| 11 | #include <linux/spinlock.h> | |
| 4667a0ec | 12 | #include <linux/writeback.h> |
| f2f7ba52 | 13 | #include "incore.h" |
| 845802b1 | 14 | #include "inode.h" |
| f2f7ba52 | 15 | |
| fe3e3976 AG |
16 | /* |
| 17 | * The minimum amount of log space required for a log flush is one block for | |
| 18 | * revokes and one block for the log header. Log flushes other than | |
| 19 | * GFS2_LOG_HEAD_FLUSH_NORMAL may write one or two more log headers. | |
| 20 | */ | |
| 21 | #define GFS2_LOG_FLUSH_MIN_BLOCKS 4 | |
| 22 | ||
| b3b94faa DT |
23 | /** |
| 24 | * gfs2_log_lock - acquire the right to mess with the log manager | |
| 25 | * @sdp: the filesystem | |
| 26 | * | |
| 27 | */ | |
| 28 | ||
| 29 | static inline void gfs2_log_lock(struct gfs2_sbd *sdp) | |
| 2d81afb8 | 30 | __acquires(&sdp->sd_log_lock) |
| b3b94faa DT |
31 | { |
| 32 | spin_lock(&sdp->sd_log_lock); | |
| 33 | } | |
| 34 | ||
| 35 | /** | |
| 36 | * gfs2_log_unlock - release the right to mess with the log manager | |
| 37 | * @sdp: the filesystem | |
| 38 | * | |
| 39 | */ | |
| 40 | ||
| 41 | static inline void gfs2_log_unlock(struct gfs2_sbd *sdp) | |
| 2d81afb8 | 42 | __releases(&sdp->sd_log_lock) |
| b3b94faa DT |
43 | { |
| 44 | spin_unlock(&sdp->sd_log_lock); | |
| 45 | } | |
| 46 | ||
| 47 | static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp, | |
| 48 | unsigned int value) | |
| 49 | { | |
| 50 | if (++value == sdp->sd_jdesc->jd_blocks) { | |
| 51 | value = 0; | |
| b3b94faa | 52 | } |
| 5cb738b5 AG |
53 | sdp->sd_log_tail = value; |
| 54 | sdp->sd_log_flush_tail = value; | |
| 55 | sdp->sd_log_head = value; | |
| b3b94faa DT |
56 | } |
| 57 | ||
| 45138990 SW |
58 | static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip) |
| 59 | { | |
| 977767a7 | 60 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
| 45138990 | 61 | |
| 977767a7 | 62 | if (gfs2_is_jdata(ip) || !gfs2_is_ordered(sdp)) |
| 845802b1 AG |
63 | return; |
| 64 | ||
| 7542486b | 65 | if (list_empty(&ip->i_ordered)) { |
| 45138990 | 66 | spin_lock(&sdp->sd_ordered_lock); |
| 7542486b | 67 | if (list_empty(&ip->i_ordered)) |
| a5b1d3fc | 68 | list_add(&ip->i_ordered, &sdp->sd_log_ordered); |
| 45138990 SW |
69 | spin_unlock(&sdp->sd_ordered_lock); |
| 70 | } | |
| 71 | } | |
| 2e9eeaa1 | 72 | |
| 0b2355fe AG |
73 | void gfs2_ordered_del_inode(struct gfs2_inode *ip); |
| 74 | unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct); | |
| 75 | void gfs2_remove_from_ail(struct gfs2_bufdata *bd); | |
| 76 | bool gfs2_log_is_empty(struct gfs2_sbd *sdp); | |
| 77 | void gfs2_log_release_revokes(struct gfs2_sbd *sdp, unsigned int revokes); | |
| 78 | void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks); | |
| 79 | bool gfs2_log_try_reserve(struct gfs2_sbd *sdp, struct gfs2_trans *tr, | |
| 80 | unsigned int *extra_revokes); | |
| 81 | void gfs2_log_reserve(struct gfs2_sbd *sdp, struct gfs2_trans *tr, | |
| 82 | unsigned int *extra_revokes); | |
| 83 | void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd, | |
| 84 | u64 seq, u32 tail, u32 lblock, u32 flags, | |
| 85 | blk_opf_t op_flags); | |
| 86 | void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl, | |
| 87 | u32 type); | |
| 88 | void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans); | |
| 89 | void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc); | |
| 90 | void log_flush_wait(struct gfs2_sbd *sdp); | |
| 2bcd610d | 91 | |
| 0b2355fe AG |
92 | int gfs2_logd(void *data); |
| 93 | void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd); | |
| 94 | void gfs2_glock_remove_revoke(struct gfs2_glock *gl); | |
| 95 | void gfs2_flush_revokes(struct gfs2_sbd *sdp); | |
| 96 | void gfs2_ail_drain(struct gfs2_sbd *sdp); | |
| b3b94faa DT |
97 | |
| 98 | #endif /* __LOG_DOT_H__ */ |