commit c73e293678fc3ec8ee9e5e275ee77dec98c4f2f1
author Josef Bacik <jbacik@fusionio.com> Thu May 16 11:14:33 2013 -0400
committer Josef Bacik <jbacik@fusionio.com> Fri Jun 14 11:29:52 2013 -0400
tree a5ce0bbc6f42e9acbb46bdd516bf27297cdb230d
parent 4a9d8bdee368de78ace8b36da4eb2186afea162d

Btrfs: do delay iput in sync_fs

We get lock inversion with umount if we allow iputs from sync_fs, so use the
delay iput flag to keep this from happening.  Thanks,

Reported-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>

fs/btrfs/super.c

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 41d81be..14d2be0 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -862,7 +862,7 @@
 		return 0;
 	}
 
-	btrfs_wait_all_ordered_extents(fs_info, 0);
+	btrfs_wait_all_ordered_extents(fs_info, 1);
 
 	trans = btrfs_attach_transaction_barrier(root);
 	if (IS_ERR(trans)) {