xfs: support removing extents from CoW fork

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Create a helper method to remove extents from the CoW fork without
any of the side effects (rmapbt/bmbt updates) of the regular extent
deletion routine.  We'll eventually use this to clear out the CoW fork
during ioend processing.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>

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Darrick J. Wong 2016-10-03 09:11:35 -07:00

parent ef4736678f

commit 4862cfe825

2 changed files with 171 additions and 0 deletions

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170

fs/xfs/libxfs/xfs_bmap.c

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1

fs/xfs/libxfs/xfs_bmap.h

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