diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index c226656f29b7..cf283b0271ac 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -2046,11 +2046,12 @@ static int noinline walk_down_tree(struct btrfs_trans_handle *trans, if (!next || !btrfs_buffer_uptodate(next)) { free_extent_buffer(next); reada_walk_down(root, cur, path->slots[*level]); - mutex_unlock(&root->fs_info->fs_mutex); next = read_tree_block(root, bytenr, blocksize); - mutex_lock(&root->fs_info->fs_mutex); - /* we dropped the lock, check one more time */ + /* we used to drop the lock above, keep the + * code to double check so that we won't forget + * when we drop the lock again in the future + */ ret = lookup_extent_ref(trans, root, bytenr, blocksize, &refs); BUG_ON(ret); |