JFS: use DIV_ROUND_UP where appropriate

This replaces some macros and code, which do the same thing as DIV_ROUND_UP
defined in kernel.h, to use the DIV_ROUND_UP macro.

Signed-off-by: Shaun Zinck <shaun.zinck@gmail.com>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
diff --git a/fs/jfs/resize.c b/fs/jfs/resize.c
index 71984ee..7f24a0b 100644
--- a/fs/jfs/resize.c
+++ b/fs/jfs/resize.c
@@ -172,7 +172,7 @@
 	 */
 	t64 = ((newLVSize - newLogSize + BPERDMAP - 1) >> L2BPERDMAP)
 	    << L2BPERDMAP;
-	t32 = ((t64 + (BITSPERPAGE - 1)) / BITSPERPAGE) + 1 + 50;
+	t32 = DIV_ROUND_UP(t64, BITSPERPAGE) + 1 + 50;
 	newFSCKSize = t32 << sbi->l2nbperpage;
 	newFSCKAddress = newLogAddress - newFSCKSize;