linux-kernel - [patch]trivial: un-needed add-store operation wastes a few bytes

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Date:	Mon, 30 Oct 2006 16:56:13 -0800
From:	nkalmala <nkalmala@...il.com>
To:	trivial@...nel.org
CC:	akpm@...l.org, linux-kernel@...r.kernel.org,
	nkalmala <nkalmala@...il.com>
Subject: [patch]trivial: 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@...il.com>
---

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index b55bb35..bf2f6cf 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;


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