From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with SMTP id 1B47E6B005A for ; Sun, 28 Jun 2009 21:45:54 -0400 (EDT) Subject: [PATCH 3/5]memhp: make pages from movable zone always isolatable From: Shaohua Li Content-Type: text/plain Date: Mon, 29 Jun 2009 09:47:18 +0800 Message-Id: <1246240038.26292.19.camel@sli10-desk.sh.intel.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: lkml , linux-mm Cc: Andrew Morton , cl@linux-foundation.org List-ID: Pages on movable zone have two types, MIGRATE_MOVABLE and MIGRATE_RESERVE, both them can be movable, because only movable memory allocation can get pages from movable zone. This makes pages in movable zone always be able to migrate. Signed-off-by: Shaohua Li --- mm/page_alloc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) Index: linux/mm/page_alloc.c =================================================================== --- linux.orig/mm/page_alloc.c 2009-06-26 09:44:07.000000000 +0800 +++ linux/mm/page_alloc.c 2009-06-26 09:52:03.000000000 +0800 @@ -4900,13 +4900,16 @@ int set_migratetype_isolate(struct page struct zone *zone; unsigned long flags; int ret = -EBUSY; + int zone_idx; zone = page_zone(page); + zone_idx = zone_idx(zone); spin_lock_irqsave(&zone->lock, flags); /* * In future, more migrate types will be able to be isolation target. */ - if (get_pageblock_migratetype(page) != MIGRATE_MOVABLE) + if (get_pageblock_migratetype(page) != MIGRATE_MOVABLE && + zone_idx != ZONE_MOVABLE) goto out; set_pageblock_migratetype(page, MIGRATE_ISOLATE); move_freepages_block(zone, page, MIGRATE_ISOLATE); -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org