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