Mark Fasheh 416161db9b btrfs: offline dedupe ... This patch adds an ioctl, BTRFS_IOC_FILE_EXTENT_SAME which will try to de-duplicate a list of extents across a range of files. Internally, the ioctl re-uses code from the clone ioctl. This avoids rewriting a large chunk of extent handling code. Userspace passes in an array of file, offset pairs along with a length argument. The ioctl will then (for each dedupe) do a byte-by-byte comparison of the user data before deduping the extent. Status and number of bytes deduped are returned for each operation. Signed-off-by: Mark Fasheh <mfasheh@suse.de> Reviewed-by: Zach Brown <zab@redhat.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>		2013-09-01 08:05:00 -04:00
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asm-generic	allow O_TMPFILE to work with O_WRONLY	2013-07-20 03:11:32 +04:00
drm
linux	btrfs: offline dedupe	2013-09-01 08:05:00 -04:00
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