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e666aa37f4
Used the per-fork sequence counter to avoid lookups in the writeback code unless the COW fork actually changed. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2003-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*/
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#ifndef __XFS_IOMAP_H__
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#define __XFS_IOMAP_H__
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#include <linux/iomap.h>
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struct xfs_inode;
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struct xfs_bmbt_irec;
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int xfs_iomap_write_direct(struct xfs_inode *, xfs_off_t, size_t,
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struct xfs_bmbt_irec *, int);
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int xfs_iomap_write_allocate(struct xfs_inode *, int, xfs_off_t,
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struct xfs_bmbt_irec *, unsigned int *);
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int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t, bool);
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void xfs_bmbt_to_iomap(struct xfs_inode *, struct iomap *,
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struct xfs_bmbt_irec *);
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xfs_extlen_t xfs_eof_alignment(struct xfs_inode *ip, xfs_extlen_t extsize);
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static inline xfs_filblks_t
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xfs_aligned_fsb_count(
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xfs_fileoff_t offset_fsb,
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xfs_filblks_t count_fsb,
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xfs_extlen_t extsz)
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{
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if (extsz) {
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xfs_extlen_t align;
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div_u64_rem(offset_fsb, extsz, &align);
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if (align)
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count_fsb += align;
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div_u64_rem(count_fsb, extsz, &align);
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if (align)
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count_fsb += extsz - align;
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}
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return count_fsb;
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}
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extern const struct iomap_ops xfs_iomap_ops;
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extern const struct iomap_ops xfs_xattr_iomap_ops;
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#endif /* __XFS_IOMAP_H__*/
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