[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 b55bb358b832975265043df8375dc523c2b3d807..bf2f6cff1d6aaeb78097e90efb78f5c6dfc61b32 100644 (file)
--- 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;