1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
4*4882a593Smuzhiyun * All Rights Reserved.
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun #ifndef __XFS_BUF_ITEM_H__
7*4882a593Smuzhiyun #define __XFS_BUF_ITEM_H__
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun /* kernel only definitions */
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun /* buf log item flags */
12*4882a593Smuzhiyun #define XFS_BLI_HOLD 0x01
13*4882a593Smuzhiyun #define XFS_BLI_DIRTY 0x02
14*4882a593Smuzhiyun #define XFS_BLI_STALE 0x04
15*4882a593Smuzhiyun #define XFS_BLI_LOGGED 0x08
16*4882a593Smuzhiyun #define XFS_BLI_INODE_ALLOC_BUF 0x10
17*4882a593Smuzhiyun #define XFS_BLI_STALE_INODE 0x20
18*4882a593Smuzhiyun #define XFS_BLI_INODE_BUF 0x40
19*4882a593Smuzhiyun #define XFS_BLI_ORDERED 0x80
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun #define XFS_BLI_FLAGS \
22*4882a593Smuzhiyun { XFS_BLI_HOLD, "HOLD" }, \
23*4882a593Smuzhiyun { XFS_BLI_DIRTY, "DIRTY" }, \
24*4882a593Smuzhiyun { XFS_BLI_STALE, "STALE" }, \
25*4882a593Smuzhiyun { XFS_BLI_LOGGED, "LOGGED" }, \
26*4882a593Smuzhiyun { XFS_BLI_INODE_ALLOC_BUF, "INODE_ALLOC" }, \
27*4882a593Smuzhiyun { XFS_BLI_STALE_INODE, "STALE_INODE" }, \
28*4882a593Smuzhiyun { XFS_BLI_INODE_BUF, "INODE_BUF" }, \
29*4882a593Smuzhiyun { XFS_BLI_ORDERED, "ORDERED" }
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun struct xfs_buf;
33*4882a593Smuzhiyun struct xfs_mount;
34*4882a593Smuzhiyun struct xfs_buf_log_item;
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun /*
37*4882a593Smuzhiyun * This is the in core log item structure used to track information
38*4882a593Smuzhiyun * needed to log buffers. It tracks how many times the lock has been
39*4882a593Smuzhiyun * locked, and which 128 byte chunks of the buffer are dirty.
40*4882a593Smuzhiyun */
41*4882a593Smuzhiyun struct xfs_buf_log_item {
42*4882a593Smuzhiyun struct xfs_log_item bli_item; /* common item structure */
43*4882a593Smuzhiyun struct xfs_buf *bli_buf; /* real buffer pointer */
44*4882a593Smuzhiyun unsigned int bli_flags; /* misc flags */
45*4882a593Smuzhiyun unsigned int bli_recur; /* lock recursion count */
46*4882a593Smuzhiyun atomic_t bli_refcount; /* cnt of tp refs */
47*4882a593Smuzhiyun int bli_format_count; /* count of headers */
48*4882a593Smuzhiyun struct xfs_buf_log_format *bli_formats; /* array of in-log header ptrs */
49*4882a593Smuzhiyun struct xfs_buf_log_format __bli_format; /* embedded in-log header */
50*4882a593Smuzhiyun };
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun int xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *);
53*4882a593Smuzhiyun void xfs_buf_item_done(struct xfs_buf *bp);
54*4882a593Smuzhiyun void xfs_buf_item_relse(struct xfs_buf *);
55*4882a593Smuzhiyun bool xfs_buf_item_put(struct xfs_buf_log_item *);
56*4882a593Smuzhiyun void xfs_buf_item_log(struct xfs_buf_log_item *, uint, uint);
57*4882a593Smuzhiyun bool xfs_buf_item_dirty_format(struct xfs_buf_log_item *);
58*4882a593Smuzhiyun void xfs_buf_inode_iodone(struct xfs_buf *);
59*4882a593Smuzhiyun void xfs_buf_inode_io_fail(struct xfs_buf *bp);
60*4882a593Smuzhiyun #ifdef CONFIG_XFS_QUOTA
61*4882a593Smuzhiyun void xfs_buf_dquot_iodone(struct xfs_buf *);
62*4882a593Smuzhiyun void xfs_buf_dquot_io_fail(struct xfs_buf *bp);
63*4882a593Smuzhiyun #else
xfs_buf_dquot_iodone(struct xfs_buf * bp)64*4882a593Smuzhiyun static inline void xfs_buf_dquot_iodone(struct xfs_buf *bp)
65*4882a593Smuzhiyun {
66*4882a593Smuzhiyun }
xfs_buf_dquot_io_fail(struct xfs_buf * bp)67*4882a593Smuzhiyun static inline void xfs_buf_dquot_io_fail(struct xfs_buf *bp)
68*4882a593Smuzhiyun {
69*4882a593Smuzhiyun }
70*4882a593Smuzhiyun #endif /* CONFIG_XFS_QUOTA */
71*4882a593Smuzhiyun void xfs_buf_iodone(struct xfs_buf *);
72*4882a593Smuzhiyun bool xfs_buf_log_check_iovec(struct xfs_log_iovec *iovec);
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun extern kmem_zone_t *xfs_buf_item_zone;
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun #endif /* __XFS_BUF_ITEM_H__ */
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