From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755002AbaH1TDQ (ORCPT ); Thu, 28 Aug 2014 15:03:16 -0400 Received: from cantor2.suse.de ([195.135.220.15]:32858 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752228AbaH1SgX (ORCPT ); Thu, 28 Aug 2014 14:36:23 -0400 From: Mel Gorman To: Jiri Slaby Cc: Linux-Stable , LKML , Mel Gorman Subject: [PATCH 34/97] mm, compaction: ignore pageblock skip when manually invoking compaction Date: Thu, 28 Aug 2014 19:34:42 +0100 Message-Id: <1409250945-30874-35-git-send-email-mgorman@suse.de> X-Mailer: git-send-email 1.8.4.5 In-Reply-To: <1409250945-30874-1-git-send-email-mgorman@suse.de> References: <1409250945-30874-1-git-send-email-mgorman@suse.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: David Rientjes commit 91ca9186484809c57303b33778d841cc28f696ed upstream. The cached pageblock hint should be ignored when triggering compaction through /proc/sys/vm/compact_memory so all eligible memory is isolated. Manually invoking compaction is known to be expensive, there's no need to skip pageblocks based on heuristics (mainly for debugging). Signed-off-by: David Rientjes Acked-by: Mel Gorman Cc: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Mel Gorman --- mm/compaction.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/compaction.c b/mm/compaction.c index 4530818..5c17302 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -1191,6 +1191,7 @@ static void compact_node(int nid) struct compact_control cc = { .order = -1, .sync = true, + .ignore_skip_hint = true, }; __compact_pgdat(NODE_DATA(nid), &cc); -- 1.8.4.5