Btrfs: fix missing mutex_unlock in btrfs_del_dir_entries_in_log()
It is necessary to unlock mutex_lock before it return an error when
btrfs_alloc_path() fails.
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index c50271a..f997ec0 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -2209,8 +2209,10 @@
log = root->log_root;
path = btrfs_alloc_path();
- if (!path)
- return -ENOMEM;
+ if (!path) {
+ err = -ENOMEM;
+ goto out_unlock;
+ }
di = btrfs_lookup_dir_item(trans, log, path, dir->i_ino,
name, name_len, -1);
@@ -2271,6 +2273,7 @@
}
fail:
btrfs_free_path(path);
+out_unlock:
mutex_unlock(&BTRFS_I(dir)->log_mutex);
if (ret == -ENOSPC) {
root->fs_info->last_trans_log_full_commit = trans->transid;