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 * gfs2_log_lock - acquire the right to mess with the log manager
18 * @sdp: the filesystem
19 *
20 */
21
gfs2_log_lock(struct gfs2_sbd * sdp)22 static inline void gfs2_log_lock(struct gfs2_sbd *sdp)
23 __acquires(&sdp->sd_log_lock)
24 {
25 spin_lock(&sdp->sd_log_lock);
26 }
27
28 /**
29 * gfs2_log_unlock - release the right to mess with the log manager
30 * @sdp: the filesystem
31 *
32 */
33
gfs2_log_unlock(struct gfs2_sbd * sdp)34 static inline void gfs2_log_unlock(struct gfs2_sbd *sdp)
35 __releases(&sdp->sd_log_lock)
36 {
37 spin_unlock(&sdp->sd_log_lock);
38 }
39
gfs2_log_pointers_init(struct gfs2_sbd * sdp,unsigned int value)40 static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp,
41 unsigned int value)
42 {
43 if (++value == sdp->sd_jdesc->jd_blocks) {
44 value = 0;
45 }
46 sdp->sd_log_head = sdp->sd_log_tail = value;
47 }
48
gfs2_ordered_add_inode(struct gfs2_inode * ip)49 static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip)
50 {
51 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
52
53 if (gfs2_is_jdata(ip) || !gfs2_is_ordered(sdp))
54 return;
55
56 if (list_empty(&ip->i_ordered)) {
57 spin_lock(&sdp->sd_ordered_lock);
58 if (list_empty(&ip->i_ordered))
59 list_add(&ip->i_ordered, &sdp->sd_log_ordered);
60 spin_unlock(&sdp->sd_ordered_lock);
61 }
62 }
63
64 extern void gfs2_ordered_del_inode(struct gfs2_inode *ip);
65 extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct);
66 extern void gfs2_remove_from_ail(struct gfs2_bufdata *bd);
67 extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks);
68 extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks);
69 extern void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
70 u64 seq, u32 tail, u32 lblock, u32 flags,
71 int op_flags);
72 extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl,
73 u32 type);
74 extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
75 extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc);
76 extern void log_flush_wait(struct gfs2_sbd *sdp);
77
78 extern int gfs2_logd(void *data);
79 extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
80 extern void gfs2_glock_remove_revoke(struct gfs2_glock *gl);
81 extern void gfs2_write_revokes(struct gfs2_sbd *sdp);
82
83 #endif /* __LOG_DOT_H__ */
84