Btrfs: release path before starting transaction in can_nocow_extent

We can't be holding tree locks while we try to start a transaction, we will deadlock. Thanks, Reported-by: Sage Weil <sage@inktank.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
mariux64 · Oct 18, 2013 · 1bda19e · 1bda19e
1 parent c00869f
commit 1bda19e
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
@@ -6437,6 +6437,7 @@ noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len,
 
 	if (btrfs_extent_readonly(root, disk_bytenr))
 		goto out;
+	btrfs_release_path(path);
 
 	/*
 	 * look for other files referencing this extent, if we