From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C6505C77B75 for ; Mon, 15 May 2023 11:36:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241360AbjEOLgC (ORCPT ); Mon, 15 May 2023 07:36:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41302 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241311AbjEOLeA (ORCPT ); Mon, 15 May 2023 07:34:00 -0400 Received: from outbound-smtp16.blacknight.com (outbound-smtp16.blacknight.com [46.22.139.233]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 39DEC1AE for ; Mon, 15 May 2023 04:33:58 -0700 (PDT) Received: from mail.blacknight.com (pemlinmail04.blacknight.ie [81.17.254.17]) by outbound-smtp16.blacknight.com (Postfix) with ESMTPS id 7EF451C4508 for ; Mon, 15 May 2023 12:33:56 +0100 (IST) Received: (qmail 25051 invoked from network); 15 May 2023 11:33:56 -0000 Received: from unknown (HELO localhost.localdomain) (mgorman@techsingularity.net@[193.118.249.27]) by 81.17.254.9 with ESMTPA; 15 May 2023 11:33:56 -0000 From: Mel Gorman To: Vlastimil Babka Cc: Andrew Morton , Jiri Slaby , Maxim Levitsky , Michal Hocko , Pedro Falcato , Paolo Bonzini , Chuyi Zhou , Linux-MM , LKML , Mel Gorman Subject: [PATCH 0/4] Follow-up "Fix excessive CPU usage during compaction" Date: Mon, 15 May 2023 12:33:40 +0100 Message-Id: <20230515113344.6869-1-mgorman@techsingularity.net> X-Mailer: git-send-email 2.35.3 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The series "Fix excessive CPU usage during compaction" [1] attempted to fix a bug [2] but Vlastimil noted that the fix was incomplete [3]. While the series was merged, fast_find_migrateblock was still disabled. This series should fix the corner cases and allow 95e7a450b819 ("Revert "mm/compaction: fix set skip in fast_find_migrateblock"") to be safely reverted. Details on how many pageblocks are rescanned are in the changelog of the last patch. [1] https://lore.kernel.org/r/20230125134434.18017-1-mgorman@techsingularity.net [2] https://bugzilla.suse.com/show_bug.cgi?id=1206848 [3] https://lore.kernel.org/r/a55cf026-a2f9-ef01-9a4c-398693e048ea@suse.cz mm/compaction.c | 24 ++++++++++-------------- 1 file changed, 10 insertions(+), 14 deletions(-) -- 2.35.3