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[23.128.96.18]) by mx.google.com with ESMTP id n25si2150507edt.464.2020.09.18.07.06.08; Fri, 18 Sep 2020 07:06:39 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@ibm.com header.s=pp1 header.b=GHhZhM61; spf=pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=ibm.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726481AbgIROFb (ORCPT + 99 others); Fri, 18 Sep 2020 10:05:31 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:27602 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726392AbgIROFa (ORCPT ); Fri, 18 Sep 2020 10:05:30 -0400 Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 08IE33Vb188245; Fri, 18 Sep 2020 10:05:24 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=subject : to : cc : references : from : message-id : date : mime-version : in-reply-to : content-type : content-transfer-encoding; s=pp1; bh=gHWdIy/8IDcCwJX15zmNuiSysfUY/kf6zvdJBmsQv5c=; b=GHhZhM61FWWyOwgfSMm7wpp2QTTV7t5SDQ9CtzR8RPIqnZgTluvzxQ6rKur/No6yGauy Q5EkSvPGPS5gkNStZ437yApKNIEWwEd1IuG/NoMqS25mKrIuLapMq0tm2stDe4AYoLcN jw95LTfvtjdvGRvAoLFzehE8iJv+iW5oBpT7U69SCAsZibGSaCHI+/kbMQWv+IIgk2ch Y9DWTXMBiDJ1vCFBkTLff+LJYc20z+6ntUP26tZvj1Q0+bIIyBnuJ9Co0PrsNTAi0hf+ Q8daGVvNh0XrmOh5kE0GIrGNGS+UH181OzyS/dDYkCBWsQC/ZaZ6A/0n9Pu/Y++Fsc2a UQ== Received: from ppma05fra.de.ibm.com (6c.4a.5195.ip4.static.sl-reverse.com [149.81.74.108]) by mx0a-001b2d01.pphosted.com with ESMTP id 33mx72g90h-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 18 Sep 2020 10:05:24 -0400 Received: from pps.filterd (ppma05fra.de.ibm.com [127.0.0.1]) by ppma05fra.de.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 08IE3BIX014217; Fri, 18 Sep 2020 14:05:21 GMT Received: from b06avi18626390.portsmouth.uk.ibm.com (b06avi18626390.portsmouth.uk.ibm.com [9.149.26.192]) by ppma05fra.de.ibm.com with ESMTP id 33mq9mg6r5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 18 Sep 2020 14:05:21 +0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06avi18626390.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 08IE3jNE19399124 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 18 Sep 2020 14:03:45 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 78D27A405B; Fri, 18 Sep 2020 14:05:19 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 61DFDA4051; Fri, 18 Sep 2020 14:05:18 +0000 (GMT) Received: from [9.199.45.180] (unknown [9.199.45.180]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 18 Sep 2020 14:05:18 +0000 (GMT) Subject: Re: [PATCH AUTOSEL 5.4 105/330] ext4: make dioread_nolock the default To: Sasha Levin , "Theodore Ts'o" Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org, linux-ext4@vger.kernel.org, Jan Kara References: <20200918020110.2063155-1-sashal@kernel.org> <20200918020110.2063155-105-sashal@kernel.org> From: Ritesh Harjani Message-ID: <3c7d6caf-00eb-d627-902d-a80f145ea4ce@linux.ibm.com> Date: Fri, 18 Sep 2020 19:35:17 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: <20200918020110.2063155-105-sashal@kernel.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-09-18_14:2020-09-16,2020-09-18 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxlogscore=836 lowpriorityscore=0 mlxscore=0 impostorscore=0 bulkscore=0 phishscore=0 clxscore=1031 malwarescore=0 priorityscore=1501 spamscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2009180110 Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Hello Sasha, On 9/18/20 7:27 AM, Sasha Levin wrote: > From: Theodore Ts'o > > [ Upstream commit 244adf6426ee31a83f397b700d964cff12a247d3 ] > > This fixes the direct I/O versus writeback race which can reveal stale > data, and it improves the tail latency of commits on slow devices. > > Link: https://lore.kernel.org/r/20200125022254.1101588-1-tytso@mit.edu > Signed-off-by: Theodore Ts'o > Signed-off-by: Sasha Levin I see that the subjected patch is being taken into many different stable trees. I remember there was a fixes patch on top of this[1]. Below thread[1] has more details. Just wanted to point this one out. Please ignore if already taken. [1]: https://www.spinics.net/lists/linux-ext4/msg72219.html -ritesh