From 074e61ec3751da9ab88ee66d3818574556c03489 Mon Sep 17 00:00:00 2001
From: James Morris <jmorris@namei.org>
Date: Wed, 10 Nov 2010 09:01:31 +1100
Subject: kernel: add roundup() code comment from akpm

Add roundup() code comment from akpm.

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Morris <jmorris@namei.org>
---
 include/linux/kernel.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'include/linux/kernel.h')

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index b526947bdf48..3f648d204c37 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -58,6 +58,8 @@ extern const char linux_proc_banner[];
 
 #define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
+
+/* The `const' in roundup() prevents gcc-3.3 from calling __divdi3 */
 #define roundup(x, y) (					\
 {							\
 	const typeof(y) __y = y;			\
-- 
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