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 E91F2C433ED for ; Wed, 5 May 2021 15:15:45 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 59F2A613B4 for ; Wed, 5 May 2021 15:15:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 59F2A613B4 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 BB5146B0070; Wed, 5 May 2021 11:15:44 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B65116B0071; Wed, 5 May 2021 11:15:44 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A0A776B0072; Wed, 5 May 2021 11:15:44 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0139.hostedemail.com [216.40.44.139]) by kanga.kvack.org (Postfix) with ESMTP id 811376B0070 for ; Wed, 5 May 2021 11:15:44 -0400 (EDT) Received: from smtpin38.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 3BC2A824999B for ; Wed, 5 May 2021 15:15:44 +0000 (UTC) X-FDA: 78107527008.38.92E3085 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf19.hostedemail.com (Postfix) with ESMTP id 121AC90009EB for ; Wed, 5 May 2021 15:15:11 +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=27fvFe0ryVXLSHC2zpPkvk9Wh4j4iIi9y7tCdwHH8bI=; b=pWkZbvnAMGeH3RGlEKnTEoPB1V W5xiHxfBR0b1+g+1beS4GZSr4FCnecDgYGEtDvw9/WpQgkW3Zxd5KaZ5+mvWCuFZdN48+8+fMKZM0 2JHWGvUwhs/4Db7X/k2sBaM779W43vczNHC65gJR1wjVOkXL6iqm5a4Nh4nk5UsdVRFvX5FHKFtWi cR8okgoZGnCN8UGOzc7r1jJCi5qqle/iS6EUeV+53i4l0PHYrjjyQeD8xuAurNbv2zlBSJxAmMcRv 7Nd6BkASzI/efM10GE7Sth84ME1zWNdsfmUtqt/Ss8JEgnbYm357xwd6yLFBbBI0cEWI21LkHiHUW MSfKv9ZQ==; Received: from willy by casper.infradead.org with local (Exim 4.94 #2 (Red Hat Linux)) id 1leJDc-000TkJ-7u; Wed, 05 May 2021 15:14:20 +0000 From: "Matthew Wilcox (Oracle)" To: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Cc: "Matthew Wilcox (Oracle)" , linux-kernel@vger.kernel.org, William Kucharski , Vlastimil Babka , Anshuman Khandual Subject: [PATCH v9 07/96] mm: Constify page_count and page_ref_count Date: Wed, 5 May 2021 16:04:59 +0100 Message-Id: <20210505150628.111735-8-willy@infradead.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210505150628.111735-1-willy@infradead.org> References: <20210505150628.111735-1-willy@infradead.org> MIME-Version: 1.0 Authentication-Results: imf19.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=pWkZbvnA; dmarc=none; spf=none (imf19.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org X-Rspamd-Server: rspam03 X-Stat-Signature: b85q44f84tetnq4mmqg5zthmcwu45ozg X-Rspamd-Queue-Id: 121AC90009EB Received-SPF: none (infradead.org>: No applicable sender policy available) receiver=imf19; identity=mailfrom; envelope-from=""; helo=casper.infradead.org; client-ip=90.155.50.34 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1620227711-597094 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: Now that compound_head() accepts a const struct page pointer, these two functions can be marked as not modifying the page pointer they are passed= . Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: William Kucharski Reviewed-by: Vlastimil Babka Reviewed-by: Anshuman Khandual --- include/linux/page_ref.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/page_ref.h b/include/linux/page_ref.h index f3318f34fc54..7ad46f45df39 100644 --- a/include/linux/page_ref.h +++ b/include/linux/page_ref.h @@ -62,12 +62,12 @@ static inline void __page_ref_unfreeze(struct page *p= age, int v) =20 #endif =20 -static inline int page_ref_count(struct page *page) +static inline int page_ref_count(const struct page *page) { return atomic_read(&page->_refcount); } =20 -static inline int page_count(struct page *page) +static inline int page_count(const struct page *page) { return atomic_read(&compound_head(page)->_refcount); } --=20 2.30.2