From patchwork Tue Jun 29 02:41:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 12349181 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 A8091C11F66 for ; Tue, 29 Jun 2021 02:41:19 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 5CBE3611AE for ; Tue, 29 Jun 2021 02:41:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5CBE3611AE Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id B2BDB8D010E; Mon, 28 Jun 2021 22:41:18 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id ADC3A8D00F0; Mon, 28 Jun 2021 22:41:18 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 97C258D010E; Mon, 28 Jun 2021 22:41:18 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0163.hostedemail.com [216.40.44.163]) by kanga.kvack.org (Postfix) with ESMTP id 6DFAE8D00F0 for ; Mon, 28 Jun 2021 22:41:18 -0400 (EDT) Received: from smtpin12.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 6D6EA17AAC for ; Tue, 29 Jun 2021 02:41:18 +0000 (UTC) X-FDA: 78305209836.12.016BDD3 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf16.hostedemail.com (Postfix) with ESMTP id 3059E8019373 for ; Tue, 29 Jun 2021 02:41:18 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 2ACE061D0E; Tue, 29 Jun 2021 02:41:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1624934477; bh=fTJpccaMe94o4VE6FiQyT/9j6M0jVjWJtvb1JECyl10=; h=Date:From:To:Subject:In-Reply-To:From; b=vk0Dr8UgA/aROzb9IoK2dN8apQF8+r+96QFg5tkVHLB7uF7YwZuD1VQu/i8jwXPcH 4TvWbB6ED6Y/asoB3rTFFF3RkhLbdGEnXmueeZnFZ+kzXtoOcN6StI/Y4kCKPLS7OO bRClw9CFYVK/u9NbHGD+MvMYU2EPER0QqjMGEJs0= Date: Mon, 28 Jun 2021 19:41:16 -0700 From: Andrew Morton To: akpm@linux-foundation.org, anshuman.khandual@arm.com, linux-mm@kvack.org, mm-commits@vger.kernel.org, torvalds@linux-foundation.org, vbabka@suse.cz, william.kucharski@oracle.com, willy@infradead.org Subject: [patch 153/192] mm/page_owner: constify dump_page_owner Message-ID: <20210629024116.fCp0fe46Q%akpm@linux-foundation.org> In-Reply-To: <20210628193256.008961950a714730751c1423@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 3059E8019373 Authentication-Results: imf16.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=vk0Dr8Ug; spf=pass (imf16.hostedemail.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none X-Stat-Signature: p63ggikh86q73naqyss3ag6xhmy5i58u X-HE-Tag: 1624934478-236093 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: From: "Matthew Wilcox (Oracle)" Subject: mm/page_owner: constify dump_page_owner dump_page_owner() only uses struct page to find the page_ext, and lookup_page_ext() already takes a const argument. Link: https://lkml.kernel.org/r/20210416231531.2521383-4-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Vlastimil Babka Reviewed-by: Anshuman Khandual Reviewed-by: William Kucharski Signed-off-by: Andrew Morton --- include/linux/page_owner.h | 6 +++--- mm/page_owner.c | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-) --- a/include/linux/page_owner.h~mm-page_owner-constify-dump_page_owner +++ a/include/linux/page_owner.h @@ -14,7 +14,7 @@ extern void __set_page_owner(struct 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_migrat 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(struc 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 */ --- a/mm/page_owner.c~mm-page_owner-constify-dump_page_owner +++ a/mm/page_owner.c @@ -392,7 +392,7 @@ err: 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;