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=-10.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 DF783C433B4 for ; Fri, 14 May 2021 10:35:01 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 944EF613B5 for ; Fri, 14 May 2021 10:35:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 944EF613B5 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.cz Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 19E166B0036; Fri, 14 May 2021 06:35:01 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 14D6C6B006E; Fri, 14 May 2021 06:35:01 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0641A6B0070; Fri, 14 May 2021 06:35:01 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0254.hostedemail.com [216.40.44.254]) by kanga.kvack.org (Postfix) with ESMTP id CA8666B0036 for ; Fri, 14 May 2021 06:35:00 -0400 (EDT) Received: from smtpin03.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 5F7A18249980 for ; Fri, 14 May 2021 10:35:00 +0000 (UTC) X-FDA: 78139478760.03.D995BE3 Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by imf10.hostedemail.com (Postfix) with ESMTP id CE68940002EE for ; Fri, 14 May 2021 10:34:58 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 95DE6AEEF; Fri, 14 May 2021 10:34:58 +0000 (UTC) Subject: Re: [PATCH v10 01/33] mm: Introduce struct folio To: "Matthew Wilcox (Oracle)" , akpm@linux-foundation.org Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Jeff Layton References: <20210511214735.1836149-1-willy@infradead.org> <20210511214735.1836149-2-willy@infradead.org> From: Vlastimil Babka Message-ID: Date: Fri, 14 May 2021 12:34:58 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: <20210511214735.1836149-2-willy@infradead.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Authentication-Results: imf10.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf10.hostedemail.com: domain of vbabka@suse.cz designates 195.135.220.15 as permitted sender) smtp.mailfrom=vbabka@suse.cz X-Stat-Signature: u4wuo1nqwoduptdgj4pm155s88w7qdi5 X-Rspamd-Queue-Id: CE68940002EE X-Rspamd-Server: rspam02 X-HE-Tag: 1620988498-39398 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 5/11/21 11:47 PM, Matthew Wilcox (Oracle) wrote: > A struct folio is a new abstraction to replace the venerable struct page. > A function which takes a struct folio argument declares that it will > operate on the entire (possibly compound) page, not just PAGE_SIZE bytes. > In return, the caller guarantees that the pointer it is passing does > not point to a tail page. > > Signed-off-by: Matthew Wilcox (Oracle) > Acked-by: Jeff Layton Acked-by: Vlastimil Babka