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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 47A40D116EA for ; Fri, 25 Oct 2024 03:41:43 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id CD4F66B008A; Thu, 24 Oct 2024 23:41:42 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id C85246B008C; Thu, 24 Oct 2024 23:41:42 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B73E86B0093; Thu, 24 Oct 2024 23:41:42 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 99E096B008A for ; Thu, 24 Oct 2024 23:41:42 -0400 (EDT) Received: from smtpin28.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id 4E99916020D for ; Fri, 25 Oct 2024 03:41:20 +0000 (UTC) X-FDA: 82710725034.28.2FC1AAF Received: from out30-97.freemail.mail.aliyun.com (out30-97.freemail.mail.aliyun.com [115.124.30.97]) by imf23.hostedemail.com (Postfix) with ESMTP id 3D350140012 for ; Fri, 25 Oct 2024 03:41:21 +0000 (UTC) Authentication-Results: imf23.hostedemail.com; dkim=pass header.d=linux.alibaba.com header.s=default header.b=Tvnt+6Ny; spf=pass (imf23.hostedemail.com: domain of baolin.wang@linux.alibaba.com designates 115.124.30.97 as permitted sender) smtp.mailfrom=baolin.wang@linux.alibaba.com; dmarc=pass (policy=none) header.from=linux.alibaba.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1729827621; a=rsa-sha256; cv=none; b=7z9pq9jIA/dC+oiKQjlYhCOqZ4G0BtMgfnAwkbmpl+C0rmzMlt9rUyhSj9LNC7yvBGLd4R 3FXddPZwOpe1CxqihD4H9E9bd2KkTYleb0E5Dp70iNzOAUZUQzS/Ucl2VZpar3BYpQTu4H O+A5uz8/Pgwci8QYbSw2xuMovr/qu5M= ARC-Authentication-Results: i=1; imf23.hostedemail.com; dkim=pass header.d=linux.alibaba.com header.s=default header.b=Tvnt+6Ny; spf=pass (imf23.hostedemail.com: domain of baolin.wang@linux.alibaba.com designates 115.124.30.97 as permitted sender) smtp.mailfrom=baolin.wang@linux.alibaba.com; dmarc=pass (policy=none) header.from=linux.alibaba.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1729827621; h=from:from:sender: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:dkim-signature; bh=zrU5pvf8Ccmt/8aWbf428dLHkAkvKhXVcjKOe29osiI=; b=ZCrjHzIT8d5V/Qm2LV40d9RbNmg8Az6XGGs/kE/uN9Nwy37RLNqpJt9Dn/TqvmUEaegeKB TDmDAmF0vQ6ElSj/7ZWut1/uGcu10bRGR38L01IuHQqfBoTnTEjCNf52iSDukBwFAyvpPT aBU/QGou0PPbK3yZd99ocQ0tp9svJ1I= DKIM-Signature:v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1729827691; h=Message-ID:Date:MIME-Version:Subject:To:From:Content-Type; bh=zrU5pvf8Ccmt/8aWbf428dLHkAkvKhXVcjKOe29osiI=; b=Tvnt+6NyVkeLwvZh7Yze5o5dO8geSigOl/EhBGYY3mm5Oh+0p6i08OS8rpqOA4YZhvQlHIkJO+RI8HR/q/fBPWTT6WjN/thrLXTQlEbi/K+i1BF/+zGvRIA4UBIWSE7HGZzeLDEX8fPb0BVRu4sL9ROD0Pt210WKVT2Za0Fr+a4= Received: from 30.74.144.130(mailfrom:baolin.wang@linux.alibaba.com fp:SMTPD_---0WHr0gmx_1729827688 cluster:ay36) by smtp.aliyun-inc.com; Fri, 25 Oct 2024 11:41:29 +0800 Message-ID: <01423085-1622-41ed-a882-64291f3e97ab@linux.alibaba.com> Date: Fri, 25 Oct 2024 11:41:28 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm: shmem: fallback to page size splice if large folio has poisoned subpages To: Matthew Wilcox Cc: akpm@linux-foundation.org, hughd@google.com, david@redhat.com, wangkefeng.wang@huawei.com, shy828301@gmail.com, dhowells@redhat.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org References: From: Baolin Wang In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Stat-Signature: dtayjeu8ximww7hnqumm18fno9betish X-Rspamd-Queue-Id: 3D350140012 X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1729827681-820518 X-HE-Meta: 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 4MJaxzXi 19VXXV69jGxnCsvtGPy3d/QTFTuyg23DV7Tf9vKVndz82KFxT6rYJM6NtFQWniBuMnOmYNJAiXxBnJ6MBiP+FfjLtv5itOn7Rz8S+ulJl2D+f2s09RYgpZFgyy/CfZmUfciQGatDOM+jXoXHrxo3iGwYyXbMZU9l3lT2k75p+JKY8roz9ns5TtUrOSqEehz8n8niSroW+z1f1AnTCtSlONUg0XCAsartGq3CFjQGpRTgdtidfEu+dOQLseg== 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: List-Subscribe: List-Unsubscribe: On 2024/10/25 11:31, Matthew Wilcox wrote: > On Fri, Oct 25, 2024 at 11:26:39AM +0800, Baolin Wang wrote: >> The tmpfs has already supported the PMD-sized large folios, and splice() >> can not read any subpages if the large folio has a poisoned subpage, >> which is not good as we discussed in previous mail[1]. > > folios do not have subpages. folios have pages. do not use the term > "subpage" anywhere. ever. OK. This is my previous habit of naming it. Will change 'subpages' to 'pages' for folios.