| 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 | |
|---|
