Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932830AbbFHN6o (ORCPT ); Mon, 8 Jun 2015 09:58:44 -0400 Received: from cantor2.suse.de ([195.135.220.15]:52440 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753374AbbFHN5P (ORCPT ); Mon, 8 Jun 2015 09:57:15 -0400 From: Mel Gorman To: Linux-MM Cc: Rik van Riel , Johannes Weiner , Michal Hocko , LKML , Mel Gorman Subject: [PATCH 24/25] mm, page_alloc: Use ac->classzone_idx instead of zone_idx(preferred_zone) Date: Mon, 8 Jun 2015 14:56:30 +0100 Message-Id: <1433771791-30567-25-git-send-email-mgorman@suse.de> X-Mailer: git-send-email 2.3.5 In-Reply-To: <1433771791-30567-1-git-send-email-mgorman@suse.de> References: <1433771791-30567-1-git-send-email-mgorman@suse.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1030 Lines: 30 ac->classzone_idx is determined by the index of the preferred zone and cached to avoid repeated calculations. wake_all_kswapds() should use it instead of using zone_idx() within a loop. Signed-off-by: Mel Gorman --- mm/page_alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 4108743eb801..886102cc9b09 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2307,7 +2307,7 @@ static void wake_all_kswapds(unsigned int order, const struct alloc_context *ac) for_each_zone_zonelist_nodemask(zone, z, ac->zonelist, ac->high_zoneidx, ac->nodemask) - wakeup_kswapd(zone, order, zone_idx(ac->preferred_zone)); + wakeup_kswapd(zone, order, ac->classzone_idx); } static inline int -- 2.3.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/