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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C00D5C531FC for ; Fri, 24 Jul 2026 10:20:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=t7EZt6KO7lG8FcX9WT699sYwppoB9LUKhBecqXvd/dQ=; b=WZlfmqUOes5/z9K/RN89/ugSit yPdBUVruhWNod242Yuu8yxkDqBDouaCu/cwyoFqWVCTh8YoZ+SZ81hWEmYk0Jxq9tlA+ilgtVfPtP QNKH72dhbIZ/U+rELoJFm4z0vWXOfxtblkqCVzA9DVUj2tYdvp1I4tM+wLm8batU6TknNpkB3E2Bs 48sp4vVFm8CH8OoYlQZxt2vUsVqmYBzXytgYZYzddDWGQ19a/zLtWL+u7wA6smePJWZ4QZMgpmVz9 Hg0Vo4Gb3NqwrOCDf8FFHz1hMkN2WFxecjusP8NNtdyYdbBxnYbTwTiex3W0v+ytj73szKEx2XBQ0 YAYtP/+A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wnD19-0000000G405-0pRh; Fri, 24 Jul 2026 10:20:35 +0000 Received: from smtp-out1.suse.de ([195.135.223.130]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wnD10-0000000G3va-3aKi for linux-arm-kernel@lists.infradead.org; Fri, 24 Jul 2026 10:20:28 +0000 Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id D52A57B6C3; Fri, 24 Jul 2026 10:20:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1784888424; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=t7EZt6KO7lG8FcX9WT699sYwppoB9LUKhBecqXvd/dQ=; b=cHeUSfZEQjvzCd0c77DqG6EraQum2jJKCxbJ8sDSWzmdA2y3VrInTakCZgF8Sl4awfwq5O hcO/m9801AN+rHBUlzNQ7BmFoZJBpv6za0RGLkGZ28pAeHn9fnSjl7DbekASs9PdVCq9Hw 02pyH3jPjM1gZIufEt8NseQnVtN+7+M= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1784888424; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=t7EZt6KO7lG8FcX9WT699sYwppoB9LUKhBecqXvd/dQ=; b=ACnpPWnCmxUaP0K9DkzaOyiQdJOcz+1rKZMn5Hr79jFIMJwKeHe0Tz+qstTMn5z8i4Qqbi 24zSdxSXu/F0RpDw== Authentication-Results: smtp-out1.suse.de; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=cHeUSfZE; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=ACnpPWnC DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1784888424; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=t7EZt6KO7lG8FcX9WT699sYwppoB9LUKhBecqXvd/dQ=; b=cHeUSfZEQjvzCd0c77DqG6EraQum2jJKCxbJ8sDSWzmdA2y3VrInTakCZgF8Sl4awfwq5O hcO/m9801AN+rHBUlzNQ7BmFoZJBpv6za0RGLkGZ28pAeHn9fnSjl7DbekASs9PdVCq9Hw 02pyH3jPjM1gZIufEt8NseQnVtN+7+M= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1784888424; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=t7EZt6KO7lG8FcX9WT699sYwppoB9LUKhBecqXvd/dQ=; b=ACnpPWnCmxUaP0K9DkzaOyiQdJOcz+1rKZMn5Hr79jFIMJwKeHe0Tz+qstTMn5z8i4Qqbi 24zSdxSXu/F0RpDw== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 73A8C779C3; Fri, 24 Jul 2026 10:20:22 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id mMU+GGY8Y2oSaQAAD6G6ig (envelope-from ); Fri, 24 Jul 2026 10:20:22 +0000 From: Pedro Falcato To: Andrew Morton , David Hildenbrand Cc: Pedro Falcato , Catalin Marinas , Will Deacon , "James E.J. Bottomley" , Helge Deller , Madhavan Srinivasan , Michael Ellerman , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , "Matthew Wilcox (Oracle)" , Jan Kara , Zi Yan , Baolin Wang , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Usama Arif , Kevin Brodsky , Muhammad Usama Anjum , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org Subject: [PATCH 1/5] mm: constify generic pte_get*() Date: Fri, 24 Jul 2026 11:20:13 +0100 Message-ID: <20260724102017.141532-2-pfalcato@suse.de> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260724102017.141532-1-pfalcato@suse.de> References: <20260724102017.141532-1-pfalcato@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spamd-Result: default: False [-1.51 / 50.00]; BAYES_HAM(-3.00)[100.00%]; SUSPICIOUS_RECIPS(1.50)[]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:rdns,imap1.dmz-prg2.suse.org:helo,suse.de:email,suse.de:mid,suse.de:dkim]; FUZZY_RATELIMITED(0.00)[rspamd.com]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; RCPT_COUNT_TWELVE(0.00)[33]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; R_RATELIMIT(0.00)[to_ip_from(RL764437jfm1qe6abtk9nwyx8m)]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; DKIM_TRACE(0.00)[suse.de:+]; FREEMAIL_CC(0.00)[suse.de,arm.com,kernel.org,HansenPartnership.com,gmx.de,linux.ibm.com,ellerman.id.au,infradead.org,google.com,suse.com,suse.cz,nvidia.com,linux.alibaba.com,redhat.com,linux.dev,lists.infradead.org,vger.kernel.org,lists.ozlabs.org,kvack.org]; RCVD_TLS_ALL(0.00)[]; TO_DN_SOME(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmx.de] X-Rspamd-Queue-Id: D52A57B6C3 X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Rspamd-Action: no action X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260724_032027_409780_278D7623 X-CRM114-Status: GOOD ( 10.68 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org None of the helpers need write access to the PTE. Constifying the param allows for const typesafety. Signed-off-by: Pedro Falcato --- include/linux/pgtable.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index 8c093c119e5a..dc418553e57a 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -490,7 +490,7 @@ static inline int pudp_set_access_flags(struct vm_area_struct *vma, #endif #ifndef ptep_get -static inline pte_t ptep_get(pte_t *ptep) +static inline pte_t ptep_get(const pte_t *ptep) { return READ_ONCE(*ptep); } @@ -739,7 +739,7 @@ static inline void ptep_clear(struct mm_struct *mm, unsigned long addr, * present bit set *unless* it is 'l'. Because get_user_pages_fast() only * operates on present ptes we're safe. */ -static inline pte_t ptep_get_lockless(pte_t *ptep) +static inline pte_t ptep_get_lockless(const pte_t *ptep) { pte_t pte; @@ -777,7 +777,7 @@ static inline pmd_t pmdp_get_lockless(pmd_t *pmdp) * We require that the PTE can be read atomically. */ #ifndef ptep_get_lockless -static inline pte_t ptep_get_lockless(pte_t *ptep) +static inline pte_t ptep_get_lockless(const pte_t *ptep) { return ptep_get(ptep); } -- 2.55.0