Btrfs devel - Oct 2013 - [PATCH] 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>
---
 fs/btrfs/inode.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 974323a..30bdacd 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6452,6 +6452,7 @@ 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
-- 
1.8.3.1

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