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, 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 55CC7C433ED for ; Fri, 30 Apr 2021 14:36:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 175FF613CE for ; Fri, 30 Apr 2021 14:36:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232618AbhD3Og4 (ORCPT ); Fri, 30 Apr 2021 10:36:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48730 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230351AbhD3Ogz (ORCPT ); Fri, 30 Apr 2021 10:36:55 -0400 Received: from zeniv-ca.linux.org.uk (zeniv-ca.linux.org.uk [IPv6:2607:5300:60:148a::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 01A38C06174A; Fri, 30 Apr 2021 07:36:06 -0700 (PDT) Received: from viro by zeniv-ca.linux.org.uk with local (Exim 4.94 #2 (Red Hat Linux)) id 1lcUFJ-009cvD-7B; Fri, 30 Apr 2021 14:35:57 +0000 Date: Fri, 30 Apr 2021 14:35:57 +0000 From: Al Viro To: Pavel Begunkov Cc: yangerkun , axboe@kernel.dk, linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org, io-uring@vger.kernel.org Subject: Re: [PATCH] block: reexpand iov_iter after read/write Message-ID: References: <20210401071807.3328235-1-yangerkun@huawei.com> <7ff7d1b7-8b6d-a684-1740-6a62565f77b6@gmail.com> <3368729f-e61d-d4b6-f2ae-e17ebe59280e@gmail.com> <3d6904c0-9719-8569-2ae8-dd9694da046b@huawei.com> <05803db5-c6de-e115-3db2-476454b20668@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <05803db5-c6de-e115-3db2-476454b20668@gmail.com> Sender: Al Viro Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On Fri, Apr 30, 2021 at 01:57:22PM +0100, Pavel Begunkov wrote: > On 4/28/21 7:16 AM, yangerkun wrote: > > Hi, > > > > Should we pick this patch for 5.13? > > Looks ok to me Looks sane. BTW, Pavel, could you go over #untested.iov_iter and give it some beating? Ideally - with per-commit profiling to see what speedups/slowdowns do they come with... It's not in the final state (if nothing else, it needs to be rebased on top of xarray stuff, and there will be followup cleanups as well), but I'd appreciate testing and profiling data... It does survive xfstests + LTP syscall tests, but that's about it.