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=-8.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 107FAC433ED for ; Tue, 6 Apr 2021 13:33:53 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id C61D8613B7 for ; Tue, 6 Apr 2021 13:33:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C61D8613B7 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 628F76B007E; Tue, 6 Apr 2021 09:33:52 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 5D95B6B0080; Tue, 6 Apr 2021 09:33:52 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4C8256B0081; Tue, 6 Apr 2021 09:33:52 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0135.hostedemail.com [216.40.44.135]) by kanga.kvack.org (Postfix) with ESMTP id 336446B007E for ; Tue, 6 Apr 2021 09:33:52 -0400 (EDT) Received: from smtpin34.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id DF44A180ACF76 for ; Tue, 6 Apr 2021 13:33:51 +0000 (UTC) X-FDA: 78002035062.34.FDDC418 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf20.hostedemail.com (Postfix) with ESMTP id 62F11D2 for ; Tue, 6 Apr 2021 13:33:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=znOL7ioDGtnmyjiPOvEtDBDkmZPLJRoNmnt6uxg81Xk=; b=Y29lZVuGVQlcopk1iYJf8/qoO9 jg6b48kEBF1iqvTL39gZ+zKKtE0zy4JrnZUnHExFvgvlEDeRIBD5RDgYQR06V4hzs78aRT0Er4g5k ImEd+n+CXEVUsghSiQEgSAgMrPjFZ9y1tTeYuxhjdPQbgg2LWyjTJ5e3XirLW9T1LJLt17Yx1P5h/ etGTPFO8VtyV8AAGswECSvKdgsIy4CZGriv6SgTmCkBjIgf8qOZZwZtZwt2YVB1Y705Gyjt68otUx S+OjFyjz5TKdDQgTXvXZzgo5nIHlV/aw8MaYtqji6vDXJwrtH8PsSfseT3cxsBoo+ATU8IzsGWFXs j8Kb6qDA==; Received: from hch by casper.infradead.org with local (Exim 4.94 #2 (Red Hat Linux)) id 1lTlp8-00Creq-Bv; Tue, 06 Apr 2021 13:33:01 +0000 Date: Tue, 6 Apr 2021 14:32:54 +0100 From: Christoph Hellwig To: "Matthew Wilcox (Oracle)" Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-cachefs@redhat.com, linux-afs@lists.infradead.org, Zi Yan Subject: Re: [PATCH v6 07/27] mm: Add get_folio Message-ID: <20210406133254.GF3062550@infradead.org> References: <20210331184728.1188084-1-willy@infradead.org> <20210331184728.1188084-8-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210331184728.1188084-8-willy@infradead.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 62F11D2 X-Stat-Signature: sx94bqszzjz5qzoxfsupujygbe7s9jj7 Received-SPF: none (casper.srs.infradead.org>: No applicable sender policy available) receiver=imf20; identity=mailfrom; envelope-from=""; helo=casper.infradead.org; client-ip=90.155.50.34 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1617716029-774973 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 Wed, Mar 31, 2021 at 07:47:08PM +0100, Matthew Wilcox (Oracle) wrote: > If we know we have a folio, we can call get_folio() instead > of get_page() and save the overhead of calling compound_head(). > > Signed-off-by: Matthew Wilcox (Oracle) > Reviewed-by: Zi Yan Looks good, Reviewed-by: Christoph Hellwig