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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)
commitb6f3409b2197e8fcedb43e6600e37b7cfbe0715b
treef4001140db592992982a323bc18553cb9d7c5682tree | snapshot (tar.gz zip)
parentdde820fbf7176b64daddc1856597d9c61dac19e2commit | diff
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>
fs/btrfs/ioctl.c diff | blob | blame | history