1 files changed, 28 insertions, 1 deletions

diff --git a/fs/super.c b/fs/super.c
index 3d9f117dd2a3..18d159dc1e40 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -293,6 +293,7 @@ void __fsync_super(struct super_block *sb)
 {
         sync_inodes_sb(sb, 0);
         vfs_dq_sync(sb);
+        sync_inodes_sb(sb, 1);
         lock_super(sb);
         if (sb->s_dirt && sb->s_op->write_super)
                 sb->s_op->write_super(sb);
@@ -300,7 +301,6 @@ void __fsync_super(struct super_block *sb)
         if (sb->s_op->sync_fs)
                 sb->s_op->sync_fs(sb, 1);
         sync_blockdev(sb->s_bdev);
-        sync_inodes_sb(sb, 1);
 }
 
 /*
@@ -522,6 +522,33 @@ restart:
         mutex_unlock(&mutex);
 }
 
+#ifdef CONFIG_BLOCK
+/*
+ *  Sync all block devices underlying some superblock
+ */
+void sync_blockdevs(void)
+{
+        struct super_block *sb;
+
+        spin_lock(&sb_lock);
+restart:
+        list_for_each_entry(sb, &super_blocks, s_list) {
+                if (!sb->s_bdev)
+                        continue;
+                sb->s_count++;
+                spin_unlock(&sb_lock);
+                down_read(&sb->s_umount);
+                if (sb->s_root)
+                        sync_blockdev(sb->s_bdev);
+                up_read(&sb->s_umount);
+                spin_lock(&sb_lock);
+                if (__put_super_and_need_restart(sb))
+                        goto restart;
+        }
+        spin_unlock(&sb_lock);
+}
+#endif
+
 /**
  *      get_super - get the superblock of a device
  *      @bdev: device to get the superblock for