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=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 B1E17C4361B for ; Fri, 18 Dec 2020 23:19:40 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 0F35C23BA8 for ; Fri, 18 Dec 2020 23:19:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0F35C23BA8 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=natalenko.name Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id EFC0A6B005C; Fri, 18 Dec 2020 18:19:38 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id EAC916B005D; Fri, 18 Dec 2020 18:19:38 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DE8A86B0068; Fri, 18 Dec 2020 18:19:38 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0098.hostedemail.com [216.40.44.98]) by kanga.kvack.org (Postfix) with ESMTP id C6D9E6B005C for ; Fri, 18 Dec 2020 18:19:38 -0500 (EST) Received: from smtpin04.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 87B0D8249980 for ; Fri, 18 Dec 2020 23:19:38 +0000 (UTC) X-FDA: 77607972036.04.cloth56_4b139f227441 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin04.hostedemail.com (Postfix) with ESMTP id 69BED801D236 for ; Fri, 18 Dec 2020 23:19:38 +0000 (UTC) X-HE-Tag: cloth56_4b139f227441 X-Filterd-Recvd-Size: 2561 Received: from vulcan.natalenko.name (vulcan.natalenko.name [104.207.131.136]) by imf04.hostedemail.com (Postfix) with ESMTP for ; Fri, 18 Dec 2020 23:19:37 +0000 (UTC) Received: from localhost (home.natalenko.name [151.237.229.131]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by vulcan.natalenko.name (Postfix) with ESMTPSA id DC4258E9A53; Sat, 19 Dec 2020 00:19:34 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=natalenko.name; s=dkim-20170712; t=1608333575; h=from:from:reply-to:subject:subject: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=eAV0Fn6ArK/ifbmD3DpCR6NZTO8ZE/t/wY+YI/Y7IGU=; b=nE1fiiu53rcxLe3WGM4ptprNIJzSIkkGtmxk9cELSi9OSCY7SQrvKY2ew5E/FYGQ/nh0yn ian+log1Fxpa7QfLL49ozILNJ+nvjc83KM0mY1S2ayzmP4JPjWS7a1V/6mJb2LDJjRmwxR iYmUCpoi6MfRU7q6lmj3r4vX1RXdcSY= Date: Sat, 19 Dec 2020 00:19:34 +0100 From: Oleksandr Natalenko To: Vitaly Wool Cc: linux-mm@kvack.org, lkml@vger.kernel.org, linux-rt-users@vger.kernel.org, Sebastian Andrzej Siewior , Mike Galbraith , akpm@linux-foundation.org Subject: Re: [PATCH 0/3] z3fold: stability / rt fixes Message-ID: <20201218231934.nwdj6zok2fndgexk@spock.localdomain> References: <20201209145151.18994-1-vitaly.wool@konsulko.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201209145151.18994-1-vitaly.wool@konsulko.com> 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 Wed, Dec 09, 2020 at 04:51:48PM +0200, Vitaly Wool wrote: > This patchset addresses z3fold stability issues under stress load, > primarily in the reclaim and free aspects. Besides, it fixes the > locking problems that were only seen in real-time kernel > configuration. > > Vitaly Wool (2): > z3fold: simplify freeing slots > z3fold: stricter locking and more careful reclaim > > Mike Galbraith (1): > z3fold: Remove preempt disabled sections for RT > > mm/z3fold.c | 191 ++++++++++++++++++++++++++-------------------------- > 1 file changed, 96 insertions(+), 95 deletions(-) > > -- > 2.20.1 > Thanks for addressing this! (I'd appreciate Cc'ing me on this though since I was the one who reported it initially...) -- Oleksandr Natalenko (post-factum)