1 files changed, 10 insertions, 5 deletions

diff --git a/fs/block_dev.c b/fs/block_dev.c
index fe47f7227618..4b6a3b9d01ef 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -176,17 +176,22 @@ blkdev_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
                                 iov, offset, nr_segs, blkdev_get_blocks, NULL);
 }
 
+int __sync_blockdev(struct block_device *bdev, int wait)
+{
+        if (!bdev)
+                return 0;
+        if (!wait)
+                return filemap_flush(bdev->bd_inode->i_mapping);
+        return filemap_write_and_wait(bdev->bd_inode->i_mapping);
+}
+
 /*
  * Write out and wait upon all the dirty data associated with a block
  * device via its mapping.  Does not take the superblock lock.
  */
 int sync_blockdev(struct block_device *bdev)
 {
-        int ret = 0;
-
-        if (bdev)
-                ret = filemap_write_and_wait(bdev->bd_inode->i_mapping);
-        return ret;
+        return __sync_blockdev(bdev, 1);
 }
 EXPORT_SYMBOL(sync_blockdev);