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 X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 00B0EC43387 for ; Mon, 7 Jan 2019 09:48:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C290620859 for ; Mon, 7 Jan 2019 09:48:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1546854535; bh=ke7HscVLlI1HOHaxS9/R04BptR9Htg3EvNNI78aR13s=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=Tb37YRsd8oFr1QPMsG/c0tRyjyGbch2fsh/oTU09OEkGWfczVjltuuxe+Pi/IuYmK EUD1J8XRk2zsp8ccEZWHFdaqe1U4yb9suYTHsv6ljnFpVrj8FUCyReMGfGGLmqLWmO KNN2KJ+6xdvJPW1gfo4/GiCbvSy6KTq3B1jA4/nY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726404AbfAGJsz (ORCPT ); Mon, 7 Jan 2019 04:48:55 -0500 Received: from mail.kernel.org ([198.145.29.99]:47330 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726323AbfAGJsz (ORCPT ); Mon, 7 Jan 2019 04:48:55 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 15AF520859; Mon, 7 Jan 2019 09:48:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1546854534; bh=ke7HscVLlI1HOHaxS9/R04BptR9Htg3EvNNI78aR13s=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=XyAN2Dao8+1H1D2HYpZ+hQaK+YWXm7VWLtkgi8w9JTbJg9B+X5FPHBgmm1jP3in7r JBnBSn9QvP4BUZ87kuWDjVE86PJSkegoAHQF4yFAz23ZSmEAevKVwjq0YX+GIiEN4P UCZxbTqV7slFD328Kv7VEVK/p8C7nufXw7dYOkiI= Date: Mon, 7 Jan 2019 10:48:52 +0100 From: Greg Kroah-Hartman To: Amit Pundir Cc: Minchan Kim , stable Subject: Re: [for-4.9.y] Patch series "use up highorder free pages before OOM", v3. Message-ID: <20190107094852.GA31759@kroah.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.11.1 (2018-12-01) Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Mon, Jan 07, 2019 at 03:10:35PM +0530, Amit Pundir wrote: > Hi Greg, > > Kindly review and consider following mm/OOM upstream fixes for stable 4.9.y. > > 88ed365ea227 ("mm: don't steal highatomic pageblock") > 04c8716f7b00 ("mm: try to exhaust highatomic reserve before the OOM") > 29fac03bef72 ("mm: make unreserve highatomic functions reliable") > > The original 4 patch series is archived here > https://lkml.org/lkml/2016/10/12/77 for review. > One of the patch from this series: > 4855e4a7f29d ("mm: prevent double decrease of nr_reserved_highatomic") > has already been picked up for 4.9.y and 4.4.y. > > I ran into these fixes in one of the msm-4.9(android) trees. > Cherry-picked and build tested on Linux 4.9.148 for > ARCH=arm/arm64 defconfig. > > Only the first patch from this series can be applied cleanly on > v4.4.y, while others fail to apply cleanly due to OOM rework done in > v4.7 release cycle, 0a0337e0d1d1 ("mm, oom: rework oom detection"). > Plus I don't see this series backported to v4.4 in any of the > msm-4.4(android) trees either. So I'm skipping it for v4.4.y. Can you get an ack from the mm developers that these really are viable for backporting to older kernel trees as they solve a real issue? thanks, greg k-h