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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 7D2DAC433DB for ; Mon, 18 Jan 2021 17:02:28 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 286FD222BB for ; Mon, 18 Jan 2021 17:02:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 286FD222BB 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 E78D16B00EC; Mon, 18 Jan 2021 12:02:21 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id DB2306B00EE; Mon, 18 Jan 2021 12:02:21 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C25DD6B00EF; Mon, 18 Jan 2021 12:02:21 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0103.hostedemail.com [216.40.44.103]) by kanga.kvack.org (Postfix) with ESMTP id A7C696B00EC for ; Mon, 18 Jan 2021 12:02:21 -0500 (EST) Received: from smtpin02.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 6444E8249980 for ; Mon, 18 Jan 2021 17:02:21 +0000 (UTC) X-FDA: 77719514082.02.road11_1f0b88a2754a Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin02.hostedemail.com (Postfix) with ESMTP id 4381B10097AA1 for ; Mon, 18 Jan 2021 17:02:21 +0000 (UTC) X-HE-Tag: road11_1f0b88a2754a X-Filterd-Recvd-Size: 2965 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf32.hostedemail.com (Postfix) with ESMTP for ; Mon, 18 Jan 2021 17:02:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=tz7wOz4RYnvira2KM0oAvqe1K89FuiXPaOsClj1QfaY=; b=UdiLz5uCBA35aOz3zxtIadKfF3 Es7l9PkXjAj1LOxpxGbBBaiKCH9ahgv7KikSm97OyOo4w+AIVcdFobqjPPIQ3HgV5BinxNBF/7lyC 4IN83JD3apatXeC4EfE73qjQcjQn5nZzPIFWHPtA8O+rUqfI7MOm/qb+RA7ojy10bnNS8eXFGRQI2 VMhCa47ifUtCbYUlvRXSNGXL8Tp/maWjVsFpItTLvOPvFncvNQl/dDW3th1N3jdLxLWoqKdCeir/u SbGFIqBbEyfjPx7UrrJ39cMjSD2+BJh3XTBwPu6NPRCTVmAdenQ30pCnY4Mwr8tdz/WOOmbVwW1rO xltHLlmg==; Received: from willy by casper.infradead.org with local (Exim 4.94 #2 (Red Hat Linux)) id 1l1Xug-00D7II-HS; Mon, 18 Jan 2021 17:01:59 +0000 From: "Matthew Wilcox (Oracle)" To: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Cc: "Matthew Wilcox (Oracle)" , linux-kernel@vger.kernel.org Subject: [PATCH v2 05/27] mm: Add put_folio Date: Mon, 18 Jan 2021 17:01:26 +0000 Message-Id: <20210118170148.3126186-6-willy@infradead.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210118170148.3126186-1-willy@infradead.org> References: <20210118170148.3126186-1-willy@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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: If we know we have a folio, we can call put_folio() instead of put_page() and save the overhead of calling compound_head(). Also skips the devmap checks. Signed-off-by: Matthew Wilcox (Oracle) --- include/linux/mm.h | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 5b071c226fd6..4d135b62a2b6 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1217,9 +1217,15 @@ static inline __must_check bool try_get_page(struc= t page *page) return true; } =20 +static inline void put_folio(struct folio *folio) +{ + if (put_page_testzero(&folio->page)) + __put_page(&folio->page); +} + static inline void put_page(struct page *page) { - page =3D compound_head(page); + struct folio *folio =3D page_folio(page); =20 /* * For devmap managed pages we need to catch refcount transition from @@ -1227,13 +1233,12 @@ static inline void put_page(struct page *page) * need to inform the device driver through callback. See * include/linux/memremap.h and HMM for details. */ - if (page_is_devmap_managed(page)) { - put_devmap_managed_page(page); + if (page_is_devmap_managed(&folio->page)) { + put_devmap_managed_page(&folio->page); return; } =20 - if (put_page_testzero(page)) - __put_page(page); + put_folio(folio); } =20 /* --=20 2.29.2