1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
10 #include <linux/list.h>
11 #include <linux/spinlock.h>
12 #include <linux/writeback.h>
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.
21 #define GFS2_LOG_FLUSH_MIN_BLOCKS 4
24 * gfs2_log_lock - acquire the right to mess with the log manager
25 * @sdp: the filesystem
29 static inline void gfs2_log_lock(struct gfs2_sbd *sdp)
30 __acquires(&sdp->sd_log_lock)
32 spin_lock(&sdp->sd_log_lock);
36 * gfs2_log_unlock - release the right to mess with the log manager
37 * @sdp: the filesystem
41 static inline void gfs2_log_unlock(struct gfs2_sbd *sdp)
42 __releases(&sdp->sd_log_lock)
44 spin_unlock(&sdp->sd_log_lock);
47 static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip)
49 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
51 if (gfs2_is_jdata(ip) || !gfs2_is_ordered(sdp))
54 if (list_empty(&ip->i_ordered)) {
55 spin_lock(&sdp->sd_ordered_lock);
56 if (list_empty(&ip->i_ordered))
57 list_add(&ip->i_ordered, &sdp->sd_log_ordered);
58 spin_unlock(&sdp->sd_ordered_lock);
62 void gfs2_ordered_del_inode(struct gfs2_inode *ip);
63 unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct);
64 void gfs2_remove_from_ail(struct gfs2_bufdata *bd);
65 bool gfs2_log_is_empty(struct gfs2_sbd *sdp);
66 void gfs2_log_release_revokes(struct gfs2_sbd *sdp, unsigned int revokes);
67 void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks);
68 bool gfs2_log_try_reserve(struct gfs2_sbd *sdp, struct gfs2_trans *tr,
69 unsigned int *extra_revokes);
70 void gfs2_log_reserve(struct gfs2_sbd *sdp, struct gfs2_trans *tr,
71 unsigned int *extra_revokes);
72 void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
73 u64 seq, u32 tail, u32 lblock, u32 flags,
75 void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl,
77 void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
78 void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc);
79 void log_flush_wait(struct gfs2_sbd *sdp);
81 int gfs2_logd(void *data);
82 void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
83 void gfs2_glock_remove_revoke(struct gfs2_glock *gl);
84 void gfs2_flush_revokes(struct gfs2_sbd *sdp);
85 void gfs2_ail_drain(struct gfs2_sbd *sdp);
87 #endif /* __LOG_DOT_H__ */