BTRFS: Remove unused node_lock

240f62c8756 replaced the node_lock with rcu_read_lock, but forgot
to remove the actual lock in the data structure. Remove it here.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 0 insertions, 3 deletions

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 8f4b81de3ae2..f290b98e2fe6 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1088,9 +1088,6 @@ struct btrfs_fs_info {
 struct btrfs_root {
         struct extent_buffer *node;
 
-        /* the node lock is held while changing the node pointer */
-        spinlock_t node_lock;
-
         struct extent_buffer *commit_root;
         struct btrfs_root *log_root;
         struct btrfs_root *reloc_root;