tree f4001140db592992982a323bc18553cb9d7c5682
parent dde820fbf7176b64daddc1856597d9c61dac19e2
author Sage Weil <sage@newdream.net> 1316544531 -0400
committer Chris Mason <chris.mason@oracle.com> 1316544531 -0400

Btrfs: reserve sufficient space for ioctl clone

Fix a crash/BUG_ON in the clone ioctl due to insufficient reservation. We
need to reserve space for:

 - adjusting the old extent (possibly splitting it)
 - adding the new extent
 - updating the inode

Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>