[XFS] Fix a logic error allowing pages to marked uptodate when not all...

[XFS] Fix a logic error allowing pages to marked uptodate when not all attached buffers were uptodate.

SGI Modid: 2.5.x-xfs:slinx:155219a

fs/xfs/linux/xfs_aops.c

@@ -803,7 +803,7 @@ page_state_convert(
 		bh = bh->b_this_page;
 	} while (offset < end_offset);
 
-	if (uptodate)
+	if (uptodate && bh == head)
 		SetPageUptodate(page);
 
 	if (startio)