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