1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
4 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
5 | */ |
6 | |
7 | #ifndef __LOG_DOT_H__ |
8 | #define __LOG_DOT_H__ |
9 | |
10 | #include <linux/list.h> |
11 | #include <linux/spinlock.h> |
12 | #include <linux/writeback.h> |
13 | #include "incore.h" |
14 | #include "inode.h" |
15 | |
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 | |
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) |
30 | __acquires(&sdp->sd_log_lock) |
31 | { |
32 | spin_lock(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) |
42 | __releases(&sdp->sd_log_lock) |
43 | { |
44 | spin_unlock(lock: &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; |
52 | } |
53 | sdp->sd_log_tail = value; |
54 | sdp->sd_log_flush_tail = value; |
55 | sdp->sd_log_head = value; |
56 | } |
57 | |
58 | static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip) |
59 | { |
60 | struct gfs2_sbd *sdp = GFS2_SB(inode: &ip->i_inode); |
61 | |
62 | if (gfs2_is_jdata(ip) || !gfs2_is_ordered(sdp)) |
63 | return; |
64 | |
65 | if (list_empty(head: &ip->i_ordered)) { |
66 | spin_lock(lock: &sdp->sd_ordered_lock); |
67 | if (list_empty(head: &ip->i_ordered)) |
68 | list_add(new: &ip->i_ordered, head: &sdp->sd_log_ordered); |
69 | spin_unlock(lock: &sdp->sd_ordered_lock); |
70 | } |
71 | } |
72 | |
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 *); |
81 | void gfs2_log_reserve(struct gfs2_sbd *sdp, struct gfs2_trans *tr, |
82 | unsigned int *); |
83 | void (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); |
91 | |
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); |
97 | |
98 | #endif /* __LOG_DOT_H__ */ |
99 | |