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 355B4C5518F for ; Mon, 3 Aug 2026 16:44:51 +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=qa9ixGhMKVNCSwKw2qfIQw6cjO I+INi1wmnhRzRKieEHt4J8w61ZyRS449e+KP2T22p8FdGZV/N14DYFFDtZ+hqkJ8K/3apeGR6u1YD p/KdLi2bgQ99WBXiW8WQgWUJLFm6QhGwf8K/73t0I5XjW+T2IT38Qg5lXuordfqwN/3tz+BKuDx2k 22+xtCyvfat8xEJtUvH6mH51eSrjPOaoQaVllLsSaVkUrzhs09ajYdyTnB1yDibwJ+u7tp2F02h5s r+qfzggDGPKDKLnfy3jB1+etnWtsLR1xipAoTIJiSgZXj5ddyh6CUhN5e9Nsl5kyxqqggTvN4h5wD e4ImCaJg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wqvmK-000000007fY-0oLv; Mon, 03 Aug 2026 16:44:40 +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 1wqvmH-000000007cA-2DNA for linux-arm-kernel@lists.infradead.org; Mon, 03 Aug 2026 16:44:38 +0000 Received: from imap1.dmz-prg2.suse.org (unknown [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 04F437F29A; Mon, 3 Aug 2026 16:44:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1785775462; 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=oI+Ftq7QHwNOamWLfQlxR1s+VH5H/xHD/n59sLRhbDnUPY9Jvs7OPu/wS6fnjjFWyQ94kH L6sBuRsm/vM98uxrAHA2p0PLJrArW8I+I4OKkUUSbVrF7M8JJrzCSxgB3JFmrDgmRulE9/ pLR5gNZLJOIdmogEzhi5DC5wm+3GtZo= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1785775462; 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=SdaodsKJpIffkXl0rAXcmAW1realq0Vrdd5uFSKLcyUr6W4xjRiWN7LDYcdlxw7f73wVY0 BSW6Vv0K1rRX8ZDA== Authentication-Results: smtp-out1.suse.de; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1785775458; 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=oyC4x8nGdSsYhE7uDhFy3mpsZSTObX+6KaI5+nPtQCCSmMzdAbivpkEH580bXfATRx/499 /rnbBCrFvwRNm/TnnaBO6iCsti8Q5QbYfshEt7TrUbVEgvi8IhaeAPJYfsjflNMtSyP0YU D462sgy/vukAbxb8Zj7r80eCdhkeJ1w= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1785775458; 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=zhuzRUQDrnP+Domlzo3/1FCpIz6k8srBWDErZHHbFo3HOpyS4OcSjVjI8vhU471Qe7a4LZ 81LYndPgkMk3LsDA== 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 1CBBD779E7; Mon, 3 Aug 2026 16:44:16 +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 sB/XA2DFcGp/SQAAD6G6ig (envelope-from ); Mon, 03 Aug 2026 16:44:16 +0000 From: Pedro Falcato To: David Hildenbrand , Andrew Morton 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 v2 5/6] mm: constify generic pte_get*() Date: Mon, 3 Aug 2026 17:43:59 +0100 Message-ID: <20260803164400.531199-6-pfalcato@suse.de> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260803164400.531199-1-pfalcato@suse.de> References: <20260803164400.531199-1-pfalcato@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spamd-Result: default: False [-5.30 / 50.00]; REPLY(-4.00)[]; 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)[]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; URIBL_BLOCKED(0.00)[suse.de:email,suse.de:mid,imap1.dmz-prg2.suse.org:helo]; 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]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; TO_DN_SOME(0.00)[]; RCPT_COUNT_TWELVE(0.00)[33]; RCVD_COUNT_TWO(0.00)[2]; FROM_HAS_DN(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:email,suse.de:mid,imap1.dmz-prg2.suse.org:helo]; RCVD_TLS_ALL(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_RATELIMIT(0.00)[to_ip_from(RLxu57a9hfgn7tttf5jiwuqe5o)]; FREEMAIL_ENVRCPT(0.00)[gmx.de] X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260803_094437_717304_727E803B X-CRM114-Status: GOOD ( 11.44 ) 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