1 files changed, 3 insertions, 1 deletions

diff --git a/fs/super.c b/fs/super.c
index cb20744ec789..ed080c417167 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -458,7 +458,6 @@ void sync_filesystems(int wait)
                 if (sb->s_flags & MS_RDONLY)
                         continue;
                 sb->s_need_sync_fs = 1;
-                async_synchronize_full_special(&sb->s_async_list);
         }
 
 restart:
@@ -471,6 +470,7 @@ restart:
                 sb->s_count++;
                 spin_unlock(&sb_lock);
                 down_read(&sb->s_umount);
+                async_synchronize_full_special(&sb->s_async_list);
                 if (sb->s_root && (wait || sb->s_dirt))
                         sb->s_op->sync_fs(sb, wait);
                 up_read(&sb->s_umount);
@@ -810,6 +810,7 @@ int get_sb_bdev(struct file_system_type *fs_type,
                 }
 
                 s->s_flags |= MS_ACTIVE;
+                bdev->bd_super = s;
         }
 
         return simple_set_mnt(mnt, s);
@@ -829,6 +830,7 @@ void kill_block_super(struct super_block *sb)
         struct block_device *bdev = sb->s_bdev;
         fmode_t mode = sb->s_mode;
 
+        bdev->bd_super = 0;
         generic_shutdown_super(sb);
         sync_blockdev(bdev);
         close_bdev_exclusive(bdev, mode);