Btrfs: Properly release lock in pin_down_bytes

When buffer isn't uptodate, pin_down_bytes may leave the tree locked
after it returns.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index e6a3ba9dd107..cdfb4ff4b459 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -1485,8 +1485,8 @@ static int pin_down_bytes(struct btrfs_root *root, u64 bytenr, u32 num_bytes,
                 struct extent_buffer *buf;
                 buf = btrfs_find_tree_block(root, bytenr, num_bytes);
                 if (buf) {
-                        if (btrfs_try_tree_lock(buf) &&
-                            btrfs_buffer_uptodate(buf, 0)) {
+                        if (btrfs_buffer_uptodate(buf, 0) &&
+                            btrfs_try_tree_lock(buf)) {
                                 u64 transid =
                                     root->fs_info->running_transaction->transid;
                                 u64 header_transid =