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authorMiao Xie <miaox@cn.fujitsu.com>2011-11-11 05:45:05 +0400
committerChris Mason <chris.mason@oracle.com>2011-11-11 05:45:05 +0400
commit3254c87618354e58fa2a7b375c6664f567480c33 (patch)
tree735c06e860467f567e12c81cabee7956baeee258 /fs
parentba38eb4de354d228f2792f93cde2c748a3a3f3b2 (diff)
downloadlinux-3254c87618354e58fa2a7b375c6664f567480c33.tar.xz
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>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/inode.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 7d394335bcb5..e16215f480d0 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2201,6 +2201,9 @@ int btrfs_orphan_cleanup(struct btrfs_root *root)
if (ret)
goto out;
}
+ /* release the path since we're done with it */
+ btrfs_release_path(path);
+
root->orphan_cleanup_state = ORPHAN_CLEANUP_DONE;
if (root->orphan_block_rsv)