Btrfs: reserve sufficient space for ioctl clone
authorSage Weil <sage@newdream.net>
Tue, 20 Sep 2011 18:48:51 +0000 (14:48 -0400)
committerChris Mason <chris.mason@oracle.com>
Tue, 20 Sep 2011 18:48:51 +0000 (14:48 -0400)
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>

No differences found