tree b85a2df3b98719f4cf6493d69409588886276833
parent d79bdd52d8be70d0e7024ac6715eee860a19834a
author Darrick J. Wong <darrick.wong@oracle.com> 1450515359 -0800
committer Al Viro <viro@zeniv.linux.org.uk> 1451633779 -0500

vfs: hoist the btrfs deduplication ioctl to the vfs

Hoist the btrfs EXTENT_SAME ioctl up to the VFS and make the name
more systematic (FIDEDUPERANGE).

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>