unbust comment layout

Cc: Hisashi Hifumi <hifumi.hisashi@oss.ntt.co.jp>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/readahead.c

@@ -549,12 +549,12 @@ page_cache_async_readahead(struct address_space *mapping,
 	ondemand_readahead(mapping, ra, filp, true, offset, req_size);
 
 	/*
-	* Normally the current page is !uptodate and lock_page() will be
-	* immediately called to implicitly unplug the device. However this
-	* is not always true for RAID conifgurations, where data arrives
-	* not strictly in their submission order. In this case we need to
-	* explicitly kick off the IO.
-	*/
+	 * Normally the current page is !uptodate and lock_page() will be
+	 * immediately called to implicitly unplug the device. However this
+	 * is not always true for RAID conifgurations, where data arrives
+	 * not strictly in their submission order. In this case we need to
+	 * explicitly kick off the IO.
+	 */
 	if (PageUptodate(page))
 		blk_run_backing_dev(mapping->backing_dev_info, NULL);
 }