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=-3.8 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,URIBL_BLOCKED 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 9EA78C4363A for ; Fri, 23 Oct 2020 14:37:18 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D2D9C2168B for ; Fri, 23 Oct 2020 14:37:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ffwll.ch header.i=@ffwll.ch header.b="M8kF83YM" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D2D9C2168B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ffwll.ch Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id E82456B005D; Fri, 23 Oct 2020 10:37:16 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id E31B56B0062; Fri, 23 Oct 2020 10:37:16 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id CD35C6B0068; Fri, 23 Oct 2020 10:37:16 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0246.hostedemail.com [216.40.44.246]) by kanga.kvack.org (Postfix) with ESMTP id 9A31A6B005D for ; Fri, 23 Oct 2020 10:37:16 -0400 (EDT) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 3D427181AEF09 for ; Fri, 23 Oct 2020 14:37:16 +0000 (UTC) X-FDA: 77403442872.11.horn30_09123582725a Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin11.hostedemail.com (Postfix) with ESMTP id 0D1B6180F8B86 for ; Fri, 23 Oct 2020 14:37:16 +0000 (UTC) X-HE-Tag: horn30_09123582725a X-Filterd-Recvd-Size: 4118 Received: from mail-ot1-f66.google.com (mail-ot1-f66.google.com [209.85.210.66]) by imf47.hostedemail.com (Postfix) with ESMTP for ; Fri, 23 Oct 2020 14:37:15 +0000 (UTC) Received: by mail-ot1-f66.google.com with SMTP id n11so1559357ota.2 for ; Fri, 23 Oct 2020 07:37:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ffwll.ch; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Ue1eoYp/rV3X5fZ+14rS63RmMW1v9BsYmIiuPRkgMlc=; b=M8kF83YM7xkRfHNyf/imBorp00wSjhbgh/S8X7DXov96K6NtfkVZ7v9QVfIAfZA9H9 O7EQwr6GuFK75XbpMbj/wQE2MrtKGKUaELIbUX3Dj3BYu3iF0wd3dYl4sruBBDTnyJgg Zx8zI5CS4WAbjTeKFiU1Htb5hwRJFgP2ypNP8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Ue1eoYp/rV3X5fZ+14rS63RmMW1v9BsYmIiuPRkgMlc=; b=Fsdb3MbEdHkQVPBN+C5wUKIjNGt/MRF0FIC4dXesC/rz1TFC4bM8M7QnE+46db9PHE 7A21tDoTaVYCMfzDm56j3RHqzbtzr2wyRiLP0Rdk/dXsKrxwRy3gEx2arNJySDy6bnPI B2SkWYiIPYJAftdw1NoW0oKesSiUBpgi8ixVZBoS3rkiVZUxbXZR/Clt/EjP9Ya0Xf6b k0T2f6XrvrPsH2cVDY41CH9d4IeoCMp7sSwTu27G1RI6h+5NIvbR/pbL+wC0VIBlqR85 V6aimz8U+B6RQNQaOzJ6XeUviYSc/eSRPcGyP5rA13tW0M7yxeRvoIwOyHVEeEWeoRCB cQWg== X-Gm-Message-State: AOAM533/naJgK2k0+bAhPbOOm/HXs8yX/ydo0bPM+hrxh4cuaU5+r/jv MEKWkDC70+921aBgXjnyecVqGImPfYeq7eZ0G9pFoQ== X-Google-Smtp-Source: ABdhPJyi58HmdEa7AIVzkzyqQTfTPkHR4zZzgTo7KlLhbs3gCVZsj5F1oZVA2pGhIrfdST5nhUdlVgXIJM7T0/Qt6U4= X-Received: by 2002:a05:6830:1647:: with SMTP id h7mr1951924otr.281.1603463832695; Fri, 23 Oct 2020 07:37:12 -0700 (PDT) MIME-Version: 1.0 References: <20201021163242.1458885-1-daniel.vetter@ffwll.ch> <20201023122216.2373294-1-daniel.vetter@ffwll.ch> <20201023122216.2373294-4-daniel.vetter@ffwll.ch> <20201023141619.GC20115@casper.infradead.org> In-Reply-To: <20201023141619.GC20115@casper.infradead.org> From: Daniel Vetter Date: Fri, 23 Oct 2020 16:37:01 +0200 Message-ID: Subject: Re: [PATCH 04/65] mm: Extract might_alloc() debug check To: Matthew Wilcox Cc: DRI Development , Intel Graphics Development , "Paul E . McKenney" , Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Peter Zijlstra , Ingo Molnar , Vlastimil Babka , Mathieu Desnoyers , Sebastian Andrzej Siewior , Michel Lespinasse , Waiman Long , Thomas Gleixner , Randy Dunlap , Linux MM , linux-fsdevel@vger.kernel.org, Dave Chinner , Qian Cai , linux-xfs@vger.kernel.org, Daniel Vetter Content-Type: text/plain; charset="UTF-8" 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 Fri, Oct 23, 2020 at 4:16 PM Matthew Wilcox wrote: > > On Fri, Oct 23, 2020 at 02:21:15PM +0200, Daniel Vetter wrote: > > Note that unlike fs_reclaim_acquire/release gfpflags_allow_blocking > > does not consult the PF_MEMALLOC flags. But there is no flag > > equivalent for GFP_NOWAIT, hence this check can't go wrong due to > > memalloc_no*_save/restore contexts. > > I have a patch series that adds memalloc_nowait_save/restore. tbh this was a typoed git send-email, but thanks for the heads-up, I'll adjust the patch accordingly. Cheers, Daniel > https://lore.kernel.org/linux-mm/20200625113122.7540-7-willy@infradead.org/ -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch