From: nkalmala <nkalmala@gmail.com>
Date: Fri, 3 Nov 2006 06:07:04 +0000 (-0800)
Subject: [PATCH] mm: un-needed add-store operation wastes a few bytes
X-Git-Tag: v2.6.19-rc5~53
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=941c7105dc4f4961727acc518e18e00b9a03cbf3;p=linux-2.6

[PATCH] mm: un-needed add-store operation wastes a few bytes

Un-needed add-store operation wastes a few bytes.
8 bytes wasted with -O2, on a ppc.

Signed-off-by: nkalmala <nkalmala@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index b55bb358b8..bf2f6cff1d 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -853,7 +853,7 @@ again:
 		pcp = &zone_pcp(zone, cpu)->pcp[cold];
 		local_irq_save(flags);
 		if (!pcp->count) {
-			pcp->count += rmqueue_bulk(zone, 0,
+			pcp->count = rmqueue_bulk(zone, 0,
 						pcp->batch, &pcp->list);
 			if (unlikely(!pcp->count))
 				goto failed;