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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 4EA48C2D0C0 for ; Thu, 26 Dec 2019 21:41:32 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 11EE7206CB for ; Thu, 26 Dec 2019 21:41:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 11EE7206CB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 906538E0005; Thu, 26 Dec 2019 16:41:31 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 8B5498E0001; Thu, 26 Dec 2019 16:41:31 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 7CAAD8E0005; Thu, 26 Dec 2019 16:41:31 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0037.hostedemail.com [216.40.44.37]) by kanga.kvack.org (Postfix) with ESMTP id 660EA8E0001 for ; Thu, 26 Dec 2019 16:41:31 -0500 (EST) Received: from smtpin22.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with SMTP id 0C0C98249980 for ; Thu, 26 Dec 2019 21:41:31 +0000 (UTC) X-FDA: 76308614382.22.honey49_4769a67695f4d X-HE-Tag: honey49_4769a67695f4d X-Filterd-Recvd-Size: 2044 Received: from gentwo.org (gentwo.org [3.19.106.255]) by imf50.hostedemail.com (Postfix) with ESMTP for ; Thu, 26 Dec 2019 21:41:30 +0000 (UTC) Received: by gentwo.org (Postfix, from userid 1002) id 2A7773F872; Thu, 26 Dec 2019 21:41:30 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by gentwo.org (Postfix) with ESMTP id 286A83E95C; Thu, 26 Dec 2019 21:41:30 +0000 (UTC) Date: Thu, 26 Dec 2019 21:41:30 +0000 (UTC) From: Christopher Lameter X-X-Sender: cl@www.lameter.com To: Andrew Morton cc: dclarke@blastwave.org, bugzilla-daemon@bugzilla.kernel.org, Pekka Enberg , David Rientjes , Joonsoo Kim , linux-mm@kvack.org, Qian Cai , longman@redhat.com Subject: Re: [Bug 205937] New: BUG: unable to handle page fault for address: f3170000 In-Reply-To: <20191223141424.8a503e5b020c9c9f6c79e0b0@linux-foundation.org> Message-ID: References: <20191223141424.8a503e5b020c9c9f6c79e0b0@linux-foundation.org> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Bogosity: Ham, tests=bogofilter, spamicity=0.000001, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, 23 Dec 2019, Andrew Morton wrote: > Guys, did we make recent changes in this area? Yes the cgroup folks did. f.e. commit 04f768a39d55967246c002aa66b407b3bfdd8269 Author: Waiman Long Date: Mon Sep 23 15:33:46 2019 -0700 mm, slab: extend slab/shrink to shrink all memcg caches Currently, a value of '1" is written to /sys/kernel/slab//shrink file to shrink the slab by flushing out all the per-cpu slabs and free slabs in partial lists. This can be useful to squeeze out a bit more memory under extreme condition as well as making the active object counts in /proc/slabinfo more accurate. This usually applies only to the root caches, as the SLUB_ME