From 7be12fc9f8dcae7f4c9647d495bd64fc4ffb6836 Mon Sep 17 00:00:00 2001 From: Michal Nazarewicz Date: Wed, 6 Aug 2014 16:05:15 -0700 Subject: [PATCH] mm: page_alloc: simplify drain_zone_pages by using min() Instead of open-coding getting minimal value of two, just use min macro. That is why it is there for. While changing the function also change type of batch local variable to match type of per_cpu_pages::batch (which is int). Signed-off-by: Michal Nazarewicz Acked-by: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 8c4f1b220ab9..c1c6cb78e5ca 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1257,15 +1257,11 @@ static int rmqueue_bulk(struct zone *zone, unsigned int order, void drain_zone_pages(struct zone *zone, struct per_cpu_pages *pcp) { unsigned long flags; - int to_drain; - unsigned long batch; + int to_drain, batch; local_irq_save(flags); batch = ACCESS_ONCE(pcp->batch); - if (pcp->count >= batch) - to_drain = batch; - else - to_drain = pcp->count; + to_drain = min(pcp->count, batch); if (to_drain > 0) { free_pcppages_bulk(zone, to_drain, pcp); pcp->count -= to_drain;