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8fe3b21efa
xfs_buffered_write_iomap_begin can also create delallocate reservations that need cleaning up, prepare for that by adding support for the COW fork in xfs_bmap_punch_delalloc_range. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Carlos Maiolino <cem@kernel.org>
83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2000-2006 Silicon Graphics, Inc.
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* All Rights Reserved.
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*/
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#ifndef __XFS_BMAP_UTIL_H__
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#define __XFS_BMAP_UTIL_H__
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/* Kernel only BMAP related definitions and functions */
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struct xfs_bmbt_irec;
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struct xfs_extent_free_item;
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struct xfs_ifork;
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struct xfs_inode;
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struct xfs_mount;
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struct xfs_trans;
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struct xfs_bmalloca;
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#ifdef CONFIG_XFS_RT
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int xfs_bmap_rtalloc(struct xfs_bmalloca *ap);
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#else /* !CONFIG_XFS_RT */
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/*
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* Attempts to allocate RT extents when RT is disable indicates corruption and
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* should trigger a shutdown.
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*/
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static inline int
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xfs_bmap_rtalloc(struct xfs_bmalloca *ap)
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{
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return -EFSCORRUPTED;
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}
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#endif /* CONFIG_XFS_RT */
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void xfs_bmap_punch_delalloc_range(struct xfs_inode *ip, int whichfork,
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xfs_off_t start_byte, xfs_off_t end_byte);
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struct kgetbmap {
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__s64 bmv_offset; /* file offset of segment in blocks */
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__s64 bmv_block; /* starting block (64-bit daddr_t) */
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__s64 bmv_length; /* length of segment, blocks */
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__s32 bmv_oflags; /* output flags */
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};
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int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv,
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struct kgetbmap *out);
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/* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */
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int xfs_bmap_extsize_align(struct xfs_mount *mp, struct xfs_bmbt_irec *gotp,
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struct xfs_bmbt_irec *prevp, xfs_extlen_t extsz,
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int rt, int eof, int delay, int convert,
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xfs_fileoff_t *offp, xfs_extlen_t *lenp);
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bool xfs_bmap_adjacent(struct xfs_bmalloca *ap);
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int xfs_bmap_last_extent(struct xfs_trans *tp, struct xfs_inode *ip,
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int whichfork, struct xfs_bmbt_irec *rec,
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int *is_empty);
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/* preallocation and hole punch interface */
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int xfs_alloc_file_space(struct xfs_inode *ip, xfs_off_t offset,
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xfs_off_t len);
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int xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset,
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xfs_off_t len);
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int xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset,
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xfs_off_t len);
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int xfs_insert_file_space(struct xfs_inode *, xfs_off_t offset,
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xfs_off_t len);
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/* EOF block manipulation functions */
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bool xfs_can_free_eofblocks(struct xfs_inode *ip);
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int xfs_free_eofblocks(struct xfs_inode *ip);
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int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip,
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struct xfs_swapext *sx);
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xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb);
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xfs_extnum_t xfs_bmap_count_leaves(struct xfs_ifork *ifp, xfs_filblks_t *count);
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int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip,
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int whichfork, xfs_extnum_t *nextents,
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xfs_filblks_t *count);
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int xfs_flush_unmap_range(struct xfs_inode *ip, xfs_off_t offset,
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xfs_off_t len);
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#endif /* __XFS_BMAP_UTIL_H__ */
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