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>

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index fdb8f44..0c0bb45 100644 (file)
--- 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);