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6d1bdc7391
Add selected helpers to estimate the transaction reservation required to write various log intent and buffer items to the log. These helpers will be used by the online repair code for more precise estimations of how much work can be done in a single transaction. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: John Garry <john.g.garry@oracle.com> Signed-off-by: John Garry <john.g.garry@oracle.com>
73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*/
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#ifndef __XFS_BUF_ITEM_H__
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#define __XFS_BUF_ITEM_H__
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/* kernel only definitions */
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struct xfs_buf;
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struct xfs_mount;
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/* buf log item flags */
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#define XFS_BLI_HOLD (1u << 0)
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#define XFS_BLI_DIRTY (1u << 1)
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#define XFS_BLI_STALE (1u << 2)
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#define XFS_BLI_LOGGED (1u << 3)
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#define XFS_BLI_INODE_ALLOC_BUF (1u << 4)
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#define XFS_BLI_STALE_INODE (1u << 5)
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#define XFS_BLI_INODE_BUF (1u << 6)
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#define XFS_BLI_ORDERED (1u << 7)
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#define XFS_BLI_FLAGS \
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{ XFS_BLI_HOLD, "HOLD" }, \
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{ XFS_BLI_DIRTY, "DIRTY" }, \
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{ XFS_BLI_STALE, "STALE" }, \
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{ XFS_BLI_LOGGED, "LOGGED" }, \
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{ XFS_BLI_INODE_ALLOC_BUF, "INODE_ALLOC" }, \
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{ XFS_BLI_STALE_INODE, "STALE_INODE" }, \
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{ XFS_BLI_INODE_BUF, "INODE_BUF" }, \
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{ XFS_BLI_ORDERED, "ORDERED" }
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/*
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* This is the in core log item structure used to track information
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* needed to log buffers. It tracks how many times the lock has been
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* locked, and which 128 byte chunks of the buffer are dirty.
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*/
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struct xfs_buf_log_item {
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struct xfs_log_item bli_item; /* common item structure */
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struct xfs_buf *bli_buf; /* real buffer pointer */
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unsigned int bli_flags; /* misc flags */
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unsigned int bli_recur; /* lock recursion count */
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atomic_t bli_refcount; /* cnt of tp refs */
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int bli_format_count; /* count of headers */
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struct xfs_buf_log_format *bli_formats; /* array of in-log header ptrs */
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struct xfs_buf_log_format __bli_format; /* embedded in-log header */
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};
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int xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *);
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void xfs_buf_item_done(struct xfs_buf *bp);
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void xfs_buf_item_relse(struct xfs_buf *);
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bool xfs_buf_item_put(struct xfs_buf_log_item *);
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void xfs_buf_item_log(struct xfs_buf_log_item *, uint, uint);
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bool xfs_buf_item_dirty_format(struct xfs_buf_log_item *);
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void xfs_buf_inode_iodone(struct xfs_buf *);
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#ifdef CONFIG_XFS_QUOTA
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void xfs_buf_dquot_iodone(struct xfs_buf *);
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#else
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static inline void xfs_buf_dquot_iodone(struct xfs_buf *bp)
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{
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}
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#endif /* CONFIG_XFS_QUOTA */
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void xfs_buf_iodone(struct xfs_buf *);
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bool xfs_buf_log_check_iovec(struct xfs_log_iovec *iovec);
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unsigned int xfs_buf_inval_log_space(unsigned int map_count,
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unsigned int blocksize);
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extern struct kmem_cache *xfs_buf_item_cache;
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#endif /* __XFS_BUF_ITEM_H__ */
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