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(parent: b4cec6c) | patch
xfs: add dedupe range vfs function
authorDarrick J. Wong <darrick.wong@oracle.com>
Mon, 3 Oct 2016 16:11:41 +0000 (09:11 -0700)
committerDarrick J. Wong <darrick.wong@oracle.com>
Wed, 5 Oct 2016 23:26:26 +0000 (16:26 -0700)
commit5deeedcecc1ec497e6c1c680aa42cfd53af74d2e
tree7c55c2dba94c899cc23f07e2333c99d2b9dc9313tree | snapshot
parentb4cec6c543a2590d871b6441d1a4dcd153a6348dcommit | diff
xfs: add dedupe range vfs function

Define a VFS function which allows userspace to request that the
kernel reflink a range of blocks between two files if the ranges'
contents match.  The function fits the new VFS ioctl that standardizes
the checking for the btrfs EXTENT SAME ioctl.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
fs/xfs/xfs_file.c diff | blob | history
fs/xfs/xfs_reflink.c diff | blob | history
fs/xfs/xfs_reflink.h diff | blob | history
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