1 files changed, 16 insertions, 57 deletions

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 55dcb7884f4d..26e5f5026620 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -245,37 +245,14 @@ struct super_block *freeze_bdev(struct block_device *bdev)
         sb = get_active_super(bdev);
         if (!sb)
                 goto out;
-        if (sb->s_flags & MS_RDONLY) {
-                sb->s_frozen = SB_FREEZE_TRANS;
-                up_write(&sb->s_umount);
+        error = freeze_super(sb);
+        if (error) {
+                deactivate_super(sb);
+                bdev->bd_fsfreeze_count--;
                 mutex_unlock(&bdev->bd_fsfreeze_mutex);
-                return sb;
-        }
-
-        sb->s_frozen = SB_FREEZE_WRITE;
-        smp_wmb();
-
-        sync_filesystem(sb);
-
-        sb->s_frozen = SB_FREEZE_TRANS;
-        smp_wmb();
-
-        sync_blockdev(sb->s_bdev);
-
-        if (sb->s_op->freeze_fs) {
-                error = sb->s_op->freeze_fs(sb);
-                if (error) {
-                        printk(KERN_ERR
-                                "VFS:Filesystem freeze failed\n");
-                        sb->s_frozen = SB_UNFROZEN;
-                        deactivate_locked_super(sb);
-                        bdev->bd_fsfreeze_count--;
-                        mutex_unlock(&bdev->bd_fsfreeze_mutex);
-                        return ERR_PTR(error);
-                }
+                return ERR_PTR(error);
         }
-        up_write(&sb->s_umount);
-
+        deactivate_super(sb);
  out:
         sync_blockdev(bdev);
         mutex_unlock(&bdev->bd_fsfreeze_mutex);
@@ -296,40 +273,22 @@ int thaw_bdev(struct block_device *bdev, struct super_block *sb)
 
         mutex_lock(&bdev->bd_fsfreeze_mutex);
         if (!bdev->bd_fsfreeze_count)
-                goto out_unlock;
+                goto out;
 
         error = 0;
         if (--bdev->bd_fsfreeze_count > 0)
-                goto out_unlock;
+                goto out;
 
         if (!sb)
-                goto out_unlock;
-
-        BUG_ON(sb->s_bdev != bdev);
-        down_write(&sb->s_umount);
-        if (sb->s_flags & MS_RDONLY)
-                goto out_unfrozen;
-
-        if (sb->s_op->unfreeze_fs) {
-                error = sb->s_op->unfreeze_fs(sb);
-                if (error) {
-                        printk(KERN_ERR
-                                "VFS:Filesystem thaw failed\n");
-                        sb->s_frozen = SB_FREEZE_TRANS;
-                        bdev->bd_fsfreeze_count++;
-                        mutex_unlock(&bdev->bd_fsfreeze_mutex);
-                        return error;
-                }
-        }
-
-out_unfrozen:
-        sb->s_frozen = SB_UNFROZEN;
-        smp_wmb();
-        wake_up(&sb->s_wait_unfrozen);
+                goto out;
 
-        if (sb)
-                deactivate_locked_super(sb);
-out_unlock:
+        error = thaw_super(sb);
+        if (error) {
+                bdev->bd_fsfreeze_count++;
+                mutex_unlock(&bdev->bd_fsfreeze_mutex);
+                return error;
+        }
+out:
         mutex_unlock(&bdev->bd_fsfreeze_mutex);
         return 0;
 }