From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Sat, 17 Jan 2026 15:28:58 +0000 (+0100)
Subject: 6.1-stable patches
X-Git-Tag: v6.6.121~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1a96410cb39610027311952f6dfc3ac7bfb5aafa;p=thirdparty%2Fkernel%2Fstable-queue.git

6.1-stable patches

added patches:
	mm-page_poison-always-declare-__kernel_map_pages-function.patch
---

diff --git a/queue-6.1/mm-page_poison-always-declare-__kernel_map_pages-function.patch b/queue-6.1/mm-page_poison-always-declare-__kernel_map_pages-function.patch
new file mode 100644
index 0000000000..6329a4f3b1
--- /dev/null
+++ b/queue-6.1/mm-page_poison-always-declare-__kernel_map_pages-function.patch
@@ -0,0 +1,70 @@
+From 8f14a96386b2676a1ccdd9d2f1732fbd7248fa98 Mon Sep 17 00:00:00 2001
+From: Arnd Bergmann <arnd@arndb.de>
+Date: Wed, 17 May 2023 15:10:50 +0200
+Subject: mm: page_poison: always declare __kernel_map_pages() function
+
+From: Arnd Bergmann <arnd@arndb.de>
+
+commit 8f14a96386b2676a1ccdd9d2f1732fbd7248fa98 upstream.
+
+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 <arnd@arndb.de>
+Cc: Boqun Feng <boqun.feng@gmail.com>
+Cc: Catalin Marinas <catalin.marinas@arm.com>
+Cc: Christoph Lameter <cl@linux.com>
+Cc: Dennis Zhou <dennis@kernel.org>
+Cc: Eric Paris <eparis@redhat.com>
+Cc: Heiko Carstens <hca@linux.ibm.com>
+Cc: Helge Deller <deller@gmx.de>
+Cc: Ingo Molnar <mingo@redhat.com>
+Cc: Michael Ellerman <mpe@ellerman.id.au>
+Cc: Michal Simek <monstr@monstr.eu>
+Cc: Palmer Dabbelt <palmer@dabbelt.com>
+Cc: Paul Moore <paul@paul-moore.com>
+Cc: Pavel Machek <pavel@ucw.cz>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Rafael J. Wysocki <rafael@kernel.org>
+Cc: Russell King <linux@armlinux.org.uk>
+Cc: Tejun Heo <tj@kernel.org>
+Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Cc: Waiman Long <longman@redhat.com>
+Cc: Will Deacon <will@kernel.org>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Cc: Salvatore Bonaccorso <carnil@debian.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ include/linux/mm.h |    3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+--- a/include/linux/mm.h
++++ b/include/linux/mm.h
+@@ -3318,13 +3318,12 @@ 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())
diff --git a/queue-6.1/series b/queue-6.1/series
index 36058388d1..e964d51660 100644
--- a/queue-6.1/series
+++ b/queue-6.1/series
@@ -1,3 +1,4 @@
+mm-page_poison-always-declare-__kernel_map_pages-function.patch
 atm-fix-dma_free_coherent-size.patch
 net-3com-3c59x-fix-possible-null-dereference-in-vortex_probe1.patch
 btrfs-always-detect-conflicting-inodes-when-logging-inode-refs.patch