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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D86A7C77B75 for ; Wed, 17 May 2023 21:04:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229484AbjEQVEp (ORCPT ); Wed, 17 May 2023 17:04:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48170 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229456AbjEQVEn (ORCPT ); Wed, 17 May 2023 17:04:43 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2675F40E6 for ; Wed, 17 May 2023 14:04:42 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id B0114647CF for ; Wed, 17 May 2023 21:04:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0F2FDC433D2; Wed, 17 May 2023 21:04:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1684357481; bh=sC+lCEBx6pD/AC+aOhJBvxJ3spYyu2GE4b/LeV3r7TM=; h=Date:To:From:Subject:From; b=OHbvoYBllOmQNvL7HsEBV1fePL+3kvsbmYaXsw0SxXFBXaGWrBRZN7bA9uJWSw18T tCJ9pjslcFzorxRHOlMLlyKmhw88w361Agh5A8R8QR5tRO7JwFNnvFsaSObep761OQ KZiAabI/wp4cwxboDgtkBKsWV4knuP5/JA3F52UA= Date: Wed, 17 May 2023 14:04:40 -0700 To: mm-commits@vger.kernel.org, will@kernel.org, tsbogend@alpha.franken.de, tj@kernel.org, tglx@linutronix.de, rafael@kernel.org, peterz@infradead.org, pavel@ucw.cz, paul@paul-moore.com, palmer@dabbelt.com, mpe@ellerman.id.au, monstr@monstr.eu, mingo@redhat.com, longman@redhat.com, linux@armlinux.org.uk, hca@linux.ibm.com, eparis@redhat.com, dennis@kernel.org, deller@gmx.de, cl@linux.com, catalin.marinas@arm.com, boqun.feng@gmail.com, arnd@arndb.de, akpm@linux-foundation.org From: Andrew Morton Subject: + mm-page_poison-always-declare-__kernel_map_pages-function.patch added to mm-nonmm-unstable branch Message-Id: <20230517210441.0F2FDC433D2@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: mm: page_poison: always declare __kernel_map_pages() function has been added to the -mm mm-nonmm-unstable branch. Its filename is mm-page_poison-always-declare-__kernel_map_pages-function.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_poison-always-declare-__kernel_map_pages-function.patch This patch will later appear in the mm-nonmm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Arnd Bergmann Subject: mm: page_poison: always declare __kernel_map_pages() function Date: Wed, 17 May 2023 15:10:50 +0200 The __kernel_map_pages() function is mainly used for CONFIG_DEBUG_PAGEALLOC, but has a number of architecture specific definitions that may also be used in other configurations, as well as a global fallback definition for architectures that do not support DEBUG_PAGEALLOC. When the option is disabled, any definitions without the prototype cause a warning: mm/page_poison.c:102:6: error: no previous prototype for '__kernel_map_pages' [-Werror=missing-prototypes] The function is a trivial nop here, so just declare it anyway to avoid the warning. Link: https://lkml.kernel.org/r/20230517131102.934196-3-arnd@kernel.org Signed-off-by: Arnd Bergmann Cc: Boqun Feng Cc: Catalin Marinas Cc: Christoph Lameter Cc: Dennis Zhou Cc: Eric Paris Cc: Heiko Carstens Cc: Helge Deller Cc: Ingo Molnar Cc: Michael Ellerman Cc: Michal Simek Cc: Palmer Dabbelt Cc: Paul Moore Cc: Pavel Machek Cc: Peter Zijlstra Cc: Rafael J. Wysocki Cc: Russell King Cc: Tejun Heo Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Cc: Waiman Long Cc: Will Deacon Signed-off-by: Andrew Morton --- include/linux/mm.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/include/linux/mm.h~mm-page_poison-always-declare-__kernel_map_pages-function +++ a/include/linux/mm.h @@ -3482,13 +3482,12 @@ static inline bool debug_pagealloc_enabl return static_branch_unlikely(&_debug_pagealloc_enabled); } -#ifdef CONFIG_DEBUG_PAGEALLOC /* * To support DEBUG_PAGEALLOC architecture must ensure that * __kernel_map_pages() never fails */ extern void __kernel_map_pages(struct page *page, int numpages, int enable); - +#ifdef CONFIG_DEBUG_PAGEALLOC static inline void debug_pagealloc_map_pages(struct page *page, int numpages) { if (debug_pagealloc_enabled_static()) _ Patches currently in -mm which might be from arnd@arndb.de are radix-tree-move-declarations-to-header.patch decompressor-provide-missing-prototypes.patch kasan-add-kasan_tag_mismatch-prototype.patch kasan-use-internal-prototypes-matching-gcc-13-builtins.patch mm-percpu-unhide-pcpu_embed_first_chunk-prototype.patch mm-page_poison-always-declare-__kernel_map_pages-function.patch mm-sparse-mark-populate_section_memmap-static.patch lib-devmem_is_allowed-include-linux-ioh.patch locking-add-lockevent_read-prototype.patch panic-hide-unused-global-functions.patch panic-make-function-declarations-visible.patch kunit-include-debugfs-header-file.patch init-consolidate-prototypes-in-linux-inith.patch init-move-cifs_root_data-prototype-into-linux-mounth.patch thread_info-move-function-declarations-to-linux-thread_infoh.patch time_namespace-always-provide-arch_get_vdso_data-prototype-for-vdso.patch