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=-4.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 014F6C433DF for ; Sat, 1 Aug 2020 10:39:52 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B93FA2080C for ; Sat, 1 Aug 2020 10:39:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="CB5II3wn" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B93FA2080C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 320568D008D; Sat, 1 Aug 2020 06:39:51 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 2D1D98D0081; Sat, 1 Aug 2020 06:39:51 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1E7BB8D008D; Sat, 1 Aug 2020 06:39:51 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0132.hostedemail.com [216.40.44.132]) by kanga.kvack.org (Postfix) with ESMTP id 085128D0081 for ; Sat, 1 Aug 2020 06:39:51 -0400 (EDT) Received: from smtpin18.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 8ED57180AD807 for ; Sat, 1 Aug 2020 10:39:50 +0000 (UTC) X-FDA: 77101654140.18.fear19_390508826f8b Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin18.hostedemail.com (Postfix) with ESMTP id 5C84C100EC664 for ; Sat, 1 Aug 2020 10:39:50 +0000 (UTC) X-HE-Tag: fear19_390508826f8b X-Filterd-Recvd-Size: 2239 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf45.hostedemail.com (Postfix) with ESMTP for ; Sat, 1 Aug 2020 10:39:49 +0000 (UTC) Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7A19D20716; Sat, 1 Aug 2020 10:39:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596278389; bh=8JWYD2B56ttQ/lSxpkTyxarsszxMaxxbKAQy93JeM0A=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=CB5II3wn+ExyyEU1lzPl8SApBFWJynzbFgq3vRBGO2VpMBE0H7qj51qImOtHK1+p9 W0tEI9cuKs5va0kqSbIOOqsArdsVOH95Hjq/P89rdnYIGBGumj4a4kcyaKQStGlbRo O7/QoPCLEf8Ak1br033trGeJpLhzQDp92Mcj48yc= Date: Sat, 1 Aug 2020 12:39:33 +0200 From: Greg KH To: SeongJae Park Cc: sashal@kernel.org, stable@vger.kernel.org, Andrew Morton , linux-mm@kvack.org, Josef Bacik , Robert Stupp , Minchan Kim , Jan Kara Subject: Re: [PATCH] mm: Don't bother dropping mmap_sem for zero size readahead Message-ID: <20200801103933.GE3046974@kroah.com> References: <20200212101356.30759-1-jack@suse.cz> <20200730113435.2280-1-sjpark@amazon.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200730113435.2280-1-sjpark@amazon.com> X-Rspamd-Queue-Id: 5C84C100EC664 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam02 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, Jul 30, 2020 at 01:34:35PM +0200, SeongJae Park wrote: > Hello, > > > The commit fixed by this patch[1] was merged in v5.1 and this patch was merged > in the mainline in v5.7 (5c72feee3e45b40a3c96c7145ec422899d0e8964). Thus, the > issue affects [v5.1, v5.6]. I was also able to reproduce the issue and confirm > the fix works on v5.4 based kernels. > > However, I couldn't find this fix in neither latest stable/linux-5.4.y, nor > stable-queue/master. Could you please put this patch in the queue? > > [1] https://lore.kernel.org/linux-mm/20200212101356.30759-1-jack@suse.cz/ Now queued up, thanks. greg k-h