1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
4 * All Rights Reserved.
5 */
6 #ifndef __XFS_BUF_ITEM_H__
7 #define __XFS_BUF_ITEM_H__
8
9 /* kernel only definitions */
10
11 /* buf log item flags */
12 #define XFS_BLI_HOLD 0x01
13 #define XFS_BLI_DIRTY 0x02
14 #define XFS_BLI_STALE 0x04
15 #define XFS_BLI_LOGGED 0x08
16 #define XFS_BLI_INODE_ALLOC_BUF 0x10
17 #define XFS_BLI_STALE_INODE 0x20
18 #define XFS_BLI_INODE_BUF 0x40
19 #define XFS_BLI_ORDERED 0x80
20
21 #define XFS_BLI_FLAGS \
22 { XFS_BLI_HOLD, "HOLD" }, \
23 { XFS_BLI_DIRTY, "DIRTY" }, \
24 { XFS_BLI_STALE, "STALE" }, \
25 { XFS_BLI_LOGGED, "LOGGED" }, \
26 { XFS_BLI_INODE_ALLOC_BUF, "INODE_ALLOC" }, \
27 { XFS_BLI_STALE_INODE, "STALE_INODE" }, \
28 { XFS_BLI_INODE_BUF, "INODE_BUF" }, \
29 { XFS_BLI_ORDERED, "ORDERED" }
30
31
32 struct xfs_buf;
33 struct xfs_mount;
34 struct xfs_buf_log_item;
35
36 /*
37 * This is the in core log item structure used to track information
38 * needed to log buffers. It tracks how many times the lock has been
39 * locked, and which 128 byte chunks of the buffer are dirty.
40 */
41 struct xfs_buf_log_item {
42 struct xfs_log_item bli_item; /* common item structure */
43 struct xfs_buf *bli_buf; /* real buffer pointer */
44 unsigned int bli_flags; /* misc flags */
45 unsigned int bli_recur; /* lock recursion count */
46 atomic_t bli_refcount; /* cnt of tp refs */
47 int bli_format_count; /* count of headers */
48 struct xfs_buf_log_format *bli_formats; /* array of in-log header ptrs */
49 struct xfs_buf_log_format __bli_format; /* embedded in-log header */
50 };
51
52 int xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *);
53 void xfs_buf_item_done(struct xfs_buf *bp);
54 void xfs_buf_item_relse(struct xfs_buf *);
55 bool xfs_buf_item_put(struct xfs_buf_log_item *);
56 void xfs_buf_item_log(struct xfs_buf_log_item *, uint, uint);
57 bool xfs_buf_item_dirty_format(struct xfs_buf_log_item *);
58 void xfs_buf_inode_iodone(struct xfs_buf *);
59 void xfs_buf_inode_io_fail(struct xfs_buf *bp);
60 #ifdef CONFIG_XFS_QUOTA
61 void xfs_buf_dquot_iodone(struct xfs_buf *);
62 void xfs_buf_dquot_io_fail(struct xfs_buf *bp);
63 #else
xfs_buf_dquot_iodone(struct xfs_buf * bp)64 static inline void xfs_buf_dquot_iodone(struct xfs_buf *bp)
65 {
66 }
xfs_buf_dquot_io_fail(struct xfs_buf * bp)67 static inline void xfs_buf_dquot_io_fail(struct xfs_buf *bp)
68 {
69 }
70 #endif /* CONFIG_XFS_QUOTA */
71 void xfs_buf_iodone(struct xfs_buf *);
72 bool xfs_buf_log_check_iovec(struct xfs_log_iovec *iovec);
73
74 extern struct kmem_cache *xfs_buf_item_cache;
75
76 #endif /* __XFS_BUF_ITEM_H__ */
77