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4f1aefd13e
The dquot and inode version are very similar, which is expected given the overall b_li_list logic. The differences are that the inode version also clears the XFS_LI_FLUSHING which is defined in common but only ever set by the inode item, and that the dquot version takes the ail_lock over the list iteration. While this seems sensible given that additions and removals from b_li_list are protected by the ail_lock, log items are only added before buffer submission, and are only removed when completing the buffer, so nothing can change the list when retrying a buffer. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Acked-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Carlos Maiolino <cem@kernel.org>
70 lines
2.2 KiB
C
70 lines
2.2 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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extern struct kmem_cache *xfs_buf_item_cache;
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#endif /* __XFS_BUF_ITEM_H__ */
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