From patchwork Wed May 5 15:04:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 12240127 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 39D2EC433B4 for ; Wed, 5 May 2021 15:11:27 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id C00C5613B4 for ; Wed, 5 May 2021 15:11:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C00C5613B4 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 4B5C86B006E; Wed, 5 May 2021 11:11:26 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 48BE16B0071; Wed, 5 May 2021 11:11:26 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 32D246B0072; Wed, 5 May 2021 11:11:26 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0165.hostedemail.com [216.40.44.165]) by kanga.kvack.org (Postfix) with ESMTP id 181486B006E for ; Wed, 5 May 2021 11:11:26 -0400 (EDT) Received: from smtpin32.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id C5F7F81DC for ; Wed, 5 May 2021 15:11:25 +0000 (UTC) X-FDA: 78107516130.32.D509FD2 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf18.hostedemail.com (Postfix) with ESMTP id 220162000383 for ; Wed, 5 May 2021 15:11:26 +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=fyQDBoLRjVEIc34oTX/DhVq3Ck4tbF5ZYnx/FCHbDo8=; b=q3wEq6eLxvrAKTb5K5dL1ZfLJ+ SX+MX4njqFFxD7mUW+yLKdOYqqXf04kChGbWdaL80tLVmCeVrUB2Atiw7WINryftkfUCisQWcgvNL J1pRccJdMRmXo2Rio08NWdwwNuBHHwxEQYjv8Ma3YjHP8psTCLpBQF1yTINDxqcwVQ8d2kCtqYQwm +YqK1jr3V2GF5I8MIoZXQnUqqNQRPS+5Q5UGVc1UhzJJb83mUgPiOWLwsRyXQxS7kVQ/bk7VvHt/b vWzFCx/WIwvigA/6VnU7bppEsSzZtDYQ8w8UTjAEL+bw9Ti/gjOpNCpMldyYk5ZurZqk7VVQSMe0G K4MliNqA==; Received: from willy by casper.infradead.org with local (Exim 4.94 #2 (Red Hat Linux)) id 1leJ9I-000TIM-7o; Wed, 05 May 2021 15:09:30 +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 04/96] mm/page_owner: Constify dump_page_owner Date: Wed, 5 May 2021 16:04:56 +0100 Message-Id: <20210505150628.111735-5-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: imf18.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=q3wEq6eL; dmarc=none; spf=none (imf18.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: kqywrz5x1ahby864fs6txwuu3dyqrnmi X-Rspamd-Queue-Id: 220162000383 Received-SPF: none (infradead.org>: No applicable sender policy available) receiver=imf18; identity=mailfrom; envelope-from=""; helo=casper.infradead.org; client-ip=90.155.50.34 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1620227486-646127 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: dump_page_owner() only uses struct page to find the page_ext, and lookup_page_ext() already takes a const argument. Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: William Kucharski Reviewed-by: Vlastimil Babka Reviewed-by: Anshuman Khandual --- include/linux/page_owner.h | 6 +++--- mm/page_owner.c | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/include/linux/page_owner.h b/include/linux/page_owner.h index 3468794f83d2..719bfe5108c5 100644 --- a/include/linux/page_owner.h +++ b/include/linux/page_owner.h @@ -14,7 +14,7 @@ extern void __set_page_owner(struct page *page, extern void __split_page_owner(struct page *page, unsigned int nr); extern void __copy_page_owner(struct page *oldpage, struct page *newpage); extern void __set_page_owner_migrate_reason(struct page *page, int reason); -extern void __dump_page_owner(struct page *page); +extern void __dump_page_owner(const struct page *page); extern void pagetypeinfo_showmixedcount_print(struct seq_file *m, pg_data_t *pgdat, struct zone *zone); @@ -46,7 +46,7 @@ static inline void set_page_owner_migrate_reason(struct page *page, int reason) if (static_branch_unlikely(&page_owner_inited)) __set_page_owner_migrate_reason(page, reason); } -static inline void dump_page_owner(struct page *page) +static inline void dump_page_owner(const struct page *page) { if (static_branch_unlikely(&page_owner_inited)) __dump_page_owner(page); @@ -69,7 +69,7 @@ static inline void copy_page_owner(struct page *oldpage, struct page *newpage) static inline void set_page_owner_migrate_reason(struct page *page, int reason) { } -static inline void dump_page_owner(struct page *page) +static inline void dump_page_owner(const struct page *page) { } #endif /* CONFIG_PAGE_OWNER */ diff --git a/mm/page_owner.c b/mm/page_owner.c index adfabb560eb9..f51a57e92aa3 100644 --- a/mm/page_owner.c +++ b/mm/page_owner.c @@ -392,7 +392,7 @@ print_page_owner(char __user *buf, size_t count, unsigned long pfn, return -ENOMEM; } -void __dump_page_owner(struct page *page) +void __dump_page_owner(const struct page *page) { struct page_ext *page_ext = lookup_page_ext(page); struct page_owner *page_owner;