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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 B69CAC64E7B for ; Mon, 30 Nov 2020 14:52:34 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 1951020719 for ; Mon, 30 Nov 2020 14:52:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="C3HNtI8Z"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="N7PVC797" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1951020719 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 9E2E58D0007; Mon, 30 Nov 2020 09:52:33 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 994688D0005; Mon, 30 Nov 2020 09:52:33 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 8819C8D0007; Mon, 30 Nov 2020 09:52:33 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0074.hostedemail.com [216.40.44.74]) by kanga.kvack.org (Postfix) with ESMTP id 6303A8D0005 for ; Mon, 30 Nov 2020 09:52:33 -0500 (EST) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 242021DE4 for ; Mon, 30 Nov 2020 14:52:33 +0000 (UTC) X-FDA: 77541375786.01.story09_3617805273a2 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin01.hostedemail.com (Postfix) with ESMTP id 05E4A1004CE5D for ; Mon, 30 Nov 2020 14:52:32 +0000 (UTC) X-HE-Tag: story09_3617805273a2 X-Filterd-Recvd-Size: 3302 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by imf21.hostedemail.com (Postfix) with ESMTP for ; Mon, 30 Nov 2020 14:52:32 +0000 (UTC) Date: Mon, 30 Nov 2020 15:52:29 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1606747950; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=FqYOmy7AsvS+8wcOaYtUA3RjkAkwu7jtiKhNU8ZLeAc=; b=C3HNtI8Z0c+cX8DT+3eM0ZoKKBwdXq/0KEAJ7AfOtNKL21z77XU+8noKwyurjwWnsYWjRp Sokk6MwgmagA+OtiJ1RTJSAB2Ev3Jy9Xo+K4Owy41kLPI/y0/XaHqU3B8XR1ziD0Jj45OC PJLGogsQOTkOn27yr3zo2jERYoOs8OsWgPdH7FN1XzA+8fWIYiuaY73ismRAIPeUn8FYuy A5RQfIIs5LZeo+X6RADmR2xdmtB6QHL9n0O8RxkodBt6sxHJKcKWg8i1T2DPnfhBS8BAPe VoefZiLFXRTRqAYUHR6u6GFtg+k+obiotrgLzQ0hIACfpbmwPuqTsfkkXeuHZQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1606747950; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=FqYOmy7AsvS+8wcOaYtUA3RjkAkwu7jtiKhNU8ZLeAc=; b=N7PVC7972LE2ln4ZEUrhBw/GJV2UZWO7V0X0J6JqMaC/SJfqQPaU4LLT+eZpWMUWIYCkhG o8hAloiZt+T8dlDw== From: Sebastian Andrzej Siewior To: Mike Galbraith Cc: Oleksandr Natalenko , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Andrew Morton , Steven Rostedt , Thomas Gleixner , linux-rt-users@vger.kernel.org Subject: Re: scheduling while atomic in z3fold Message-ID: <20201130145229.mhbkrfuvyctniaxi@linutronix.de> References: <20201128140924.iyqr2h52z2olt6zb@spock.localdomain> <20201128142723.zik6d5skvt3uwu5f@spock.localdomain> <15171df044b167351e7f6a688aabd71bade9ae2a.camel@gmx.de> <79ee43026efe5aaa560953ea8fe29a826ac4e855.camel@gmx.de> <20201129112922.db53kmtpu76xxukj@spock.localdomain> <90c4857c53b657147bfb71a281ece9839b0373c2.camel@gmx.de> <20201130132014.mlvxeyiub3fpwyw7@linutronix.de> <856b5cc2a3d4eb673743b52956bf1e60dcdf87a1.camel@gmx.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <856b5cc2a3d4eb673743b52956bf1e60dcdf87a1.camel@gmx.de> 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 2020-11-30 15:42:46 [+0100], Mike Galbraith wrote: > This explodes in write_unlock() as mine did. Oleksandr's local_lock() > variant explodes in the lock he added. (ew, corruption) >=20 > I think I'll try a stable-rt tree. This master tree _should_ be fine > given it seems to work just peachy for everything else, but my box is > the only one making boom... and also NOT making boom with the zbud > compressor. Hrmph. How do you test this? I triggered a few oom-killer and I have here git gc running for a few hours now=E2=80=A6 Everything is fine. Sebastian