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(parent: 9fe2604) | 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)
commitcc714660bb8b14dd897cd805bbcd8b76a7606289
tree7c55c2dba94c899cc23f07e2333c99d2b9dc9313tree | snapshot (tar.gz zip)
parent9fe26045e98f8787999f6aa45aec35d16565c1bdcommit | 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 | blame | history
fs/xfs/xfs_reflink.c diff | blob | blame | history
fs/xfs/xfs_reflink.h diff | blob | blame | history