xfs: iterate backwards in xfs_reflink_cancel_cow_blocks

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Match the iteration order for extent deletion in the truncate and
reflink I/O completion path.

This also happens to make implementing the new incore extent list
a lot easier.

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

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Christoph Hellwig 2017-11-03 10:34:44 -07:00 • committed by Darrick J. Wong

parent b2b1712a64

commit 41caabd0ab

1 changed files with 12 additions and 4 deletions

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fs/xfs/xfs_reflink.c

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