commit 573bfb72f7608eb7097d2dd036a714a6ab20cffe
author Miao Xie <miaox@cn.fujitsu.com> Thu Mar 06 13:55:03 2014 +0800
committer Josef Bacik <jbacik@fb.com> Mon Mar 10 15:17:29 2014 -0400
tree 5434c2e82299cf22af4470fef31d3890d209a0b9
parent 31f3d255c677073f83daa1e0671bbf2157bf8edc

Btrfs: fix possible empty list access when flushing the delalloc inodes

We didn't have a lock to protect the access to the delalloc inodes list, that is
we might access a empty delalloc inodes list if someone start flushing delalloc
inodes because the delalloc inodes were moved into a other list temporarily.
Fix it by wrapping the access with a lock.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>