Btrfs: add NULL check for do_walk_down()
authorMiao Xie <miaox@cn.fujitsu.com>
Thu, 25 Mar 2010 12:37:12 +0000 (12:37 +0000)
committerChris Mason <chris.mason@oracle.com>
Wed, 31 Mar 2010 01:19:08 +0000 (21:19 -0400)
btrfs_find_create_tree_block() may return NULL, so we must check the returned
value, or we will access a NULL pointer.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

No differences found