Btrfs: fix unlock in __start_delalloc_inodes()

This patch fix a regression caused by the following patch:
Btrfs: don't flush all delalloc inodes when we doesn't get s_umount lock

break while loop will make us call @spin_unlock() without
calling @spin_lock() before, fix it.

Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index fdb8f4486e85..0c0bb450cbba 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -8500,19 +8500,20 @@ static int __start_delalloc_inodes(struct btrfs_root *root, int delay_iput,
                         else
                                 iput(inode);
                         ret = -ENOMEM;
-                        break;
+                        goto out;
                 }
                 list_add_tail(&work->list, &works);
                 btrfs_queue_work(root->fs_info->flush_workers,
                                  &work->work);
                 ret++;
                 if (nr != -1 && ret >= nr)
-                        break;
+                        goto out;
                 cond_resched();
                 spin_lock(&root->delalloc_lock);
         }
         spin_unlock(&root->delalloc_lock);
 
+out:
         list_for_each_entry_safe(work, next, &works, list) {
                 list_del_init(&work->list);
                 btrfs_wait_and_free_delalloc_work(work);