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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 89820C433F5 for ; Fri, 1 Apr 2022 13:49:46 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id D22178D0003; Fri, 1 Apr 2022 09:49:35 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id CD2268D0001; Fri, 1 Apr 2022 09:49:35 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id BC11F8D0003; Fri, 1 Apr 2022 09:49:35 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0100.hostedemail.com [216.40.44.100]) by kanga.kvack.org (Postfix) with ESMTP id ADE638D0001 for ; Fri, 1 Apr 2022 09:49:35 -0400 (EDT) Received: from smtpin23.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 70FAE812C199 for ; Fri, 1 Apr 2022 13:49:25 +0000 (UTC) X-FDA: 79308442290.23.75099A9 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by imf16.hostedemail.com (Postfix) with ESMTP id CD347180026 for ; Fri, 1 Apr 2022 13:49:24 +0000 (UTC) Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id 6BC051FCFF; Fri, 1 Apr 2022 13:49:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1648820963; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=fz7xTr9l8MJUB0+OMSqplN0cGq108K0n8faUQPVz55Q=; b=Yu6NjHMt7T3hEovFrCYTCNQDHNBMSEIGAC7vtE5HdIeJTjdGaWPWuvtWkga9n+f3kw4n0n PqfdHfFycik3IpsR4/PmGi/vQOQ0uItdxsWVm4bR3cwidS1vlHAXFuPREHmtv48DMB9I8Y 5ch54gnY21D9R4t1J5IzGwMspvIfdEk= Received: from suse.cz (unknown [10.100.201.86]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by relay2.suse.de (Postfix) with ESMTPS id 90A10A3B82; Fri, 1 Apr 2022 13:49:22 +0000 (UTC) Date: Fri, 1 Apr 2022 15:49:19 +0200 From: Michal Hocko To: Roman Gushchin Cc: Yosry Ahmed , Johannes Weiner , Shakeel Butt , Andrew Morton , David Rientjes , Tejun Heo , Zefan Li , cgroups@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Jonathan Corbet , Yu Zhao , Dave Hansen , Wei Xu , Greg Thelen Subject: Re: [PATCH resend] memcg: introduce per-memcg reclaim interface Message-ID: References: <20220331084151.2600229-1-yosryahmed@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: CD347180026 X-Stat-Signature: tn83pjjhqwizr1ybcsks6rdiqaq6aanc X-Rspam-User: Authentication-Results: imf16.hostedemail.com; dkim=pass header.d=suse.com header.s=susede1 header.b=Yu6NjHMt; dmarc=pass (policy=quarantine) header.from=suse.com; spf=pass (imf16.hostedemail.com: domain of mhocko@suse.com designates 195.135.220.29 as permitted sender) smtp.mailfrom=mhocko@suse.com X-HE-Tag: 1648820964-602731 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu 31-03-22 10:25:23, Roman Gushchin wrote: > On Thu, Mar 31, 2022 at 08:41:51AM +0000, Yosry Ahmed wrote: [...] > > - A similar per-node interface can also be added to support proactive > > reclaim and reclaim-based demotion in systems without memcg. > > Maybe an option to specify a timeout? That might simplify the userspace part. What do you mean by timeout here? Isn't timeout $N echo $RECLAIM > .... enough? -- Michal Hocko SUSE Labs