Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754080AbYJARlZ (ORCPT ); Wed, 1 Oct 2008 13:41:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752476AbYJARlR (ORCPT ); Wed, 1 Oct 2008 13:41:17 -0400 Received: from mtagate6.uk.ibm.com ([195.212.29.139]:64962 "EHLO mtagate6.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752363AbYJARlR (ORCPT ); Wed, 1 Oct 2008 13:41:17 -0400 Subject: [PATCH] setup_per_zone_pages_min(): take zone->lock instead of zone->lru_lock From: Gerald Schaefer To: Andrew Morton Cc: Yasunori Goto , Andy Whitcroft , linux-kernel@vger.kernel.org, linux-mm@kvack.org, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, Mel Gorman , KAMEZAWA Hiroyuki In-Reply-To: <20080930103748.44A3.E1E9C6FF@jp.fujitsu.com> References: <1222723206.6791.2.camel@ubuntu> <20080930094017.5ed2938a.kamezawa.hiroyu@jp.fujitsu.com> <20080930103748.44A3.E1E9C6FF@jp.fujitsu.com> Content-Type: text/plain Date: Wed, 01 Oct 2008 19:39:32 +0200 Message-Id: <1222882772.4846.40.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.12.3 (2.12.3-8.el5_2.2) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1492 Lines: 42 From: Gerald Schaefer This replaces zone->lru_lock in setup_per_zone_pages_min() with zone->lock. There seems to be no need for the lru_lock anymore, but there is a need for zone->lock instead, because that function may call move_freepages() via setup_zone_migrate_reserve(). Signed-off-by: Gerald Schaefer --- mm/page_alloc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) Index: linux-2.6/mm/page_alloc.c =================================================================== --- linux-2.6.orig/mm/page_alloc.c +++ linux-2.6/mm/page_alloc.c @@ -4207,7 +4207,7 @@ void setup_per_zone_pages_min(void) for_each_zone(zone) { u64 tmp; - spin_lock_irqsave(&zone->lru_lock, flags); + spin_lock_irqsave(&zone->lock, flags); tmp = (u64)pages_min * zone->present_pages; do_div(tmp, lowmem_pages); if (is_highmem(zone)) { @@ -4239,7 +4239,7 @@ void setup_per_zone_pages_min(void) zone->pages_low = zone->pages_min + (tmp >> 2); zone->pages_high = zone->pages_min + (tmp >> 1); setup_zone_migrate_reserve(zone); - spin_unlock_irqrestore(&zone->lru_lock, flags); + spin_unlock_irqrestore(&zone->lock, flags); } /* update totalreserve_pages */ -- 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/