Btrfs: fix unreleased path in btrfs_orphan_cleanup()
authorMiao Xie <miaox@cn.fujitsu.com>
Fri, 11 Nov 2011 01:45:05 +0000 (20:45 -0500)
committerChris Mason <chris.mason@oracle.com>
Fri, 11 Nov 2011 01:45:05 +0000 (20:45 -0500)
commit3254c87618354e58fa2a7b375c6664f567480c33
tree735c06e860467f567e12c81cabee7956baeee258
parentba38eb4de354d228f2792f93cde2c748a3a3f3b2
Btrfs: fix unreleased path in btrfs_orphan_cleanup()

When we did stress test for the space relocation, the deadlock happened.
By debugging, We found it was caused by the carelessness that we forgot
to unlock the read lock of the extent buffers in btrfs_orphan_cleanup()
before we end the transaction handle, so the transaction commit task waited
the task, which called btrfs_orphan_cleanup(), to unlock the extent buffer,
but that task waited the commit task to end the transaction commit, and
the deadlock happened. Fix it.

Signed-ff-by: Miao Xie <miaox@cn.fujitsu.com>

Signed-off-by: Chris Mason <chris.mason@oracle.com>
fs/btrfs/inode.c