+ proc-task_mmu-remove-unnecessary-inlines-in-function-definitions-fix.patch added to mm-unstable branch

+ proc-task_mmu-remove-unnecessary-inlines-in-function-definitions-fix.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: proc-task_mmu-remove-unnecessary-inlines-in-function-definitions-fix
has been added to the -mm mm-unstable branch.  Its filename is
     proc-task_mmu-remove-unnecessary-inlines-in-function-definitions-fix.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/proc-task_mmu-remove-unnecessary-inlines-in-function-definitions-fix.patch

This patch will later appear in the mm-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 various
branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there most days

------------------------------------------------------
From: Andrew Morton <akpm@linux-foundation.org>
Subject: proc-task_mmu-remove-unnecessary-inlines-in-function-definitions-fix
Date: Sun Sep 27 10:59:53 AM PDT 2026

fix CONFIG_NUMA=y && CONFIG_PROC_PAGE_MONITOR=n build

show_numa_map() uses drop_rcu() and reacquire_rcu(), but those helpers are
currently built only when CONFIG_PROC_PAGE_MONITOR is enabled.  A kernel
with CONFIG_NUMA=y and CONFIG_PROC_PAGE_MONITOR=n therefore fails to build
with implicit declarations for both helpers.

Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/proc/task_mmu.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/proc/task_mmu.c~proc-task_mmu-remove-unnecessary-inlines-in-function-definitions-fix
+++ a/fs/proc/task_mmu.c
@@ -196,7 +196,7 @@ static bool fallback_to_mmap_lock(struct
 	return true;
 }
 
-#ifdef CONFIG_PROC_PAGE_MONITOR
+#if defined(CONFIG_PROC_PAGE_MONITOR) || defined(CONFIG_NUMA)
 static void drop_rcu(struct proc_maps_private *priv)
 {
 	if (priv->lock_ctx.mmap_locked)
_

Patches currently in -mm which might be from akpm@linux-foundation.org are

mm-memory_hotplug-factor-out-node_is_memoryless-fix.patch
docs-admin-guide-mm-damon-usage-update-for-hugepage_size-fix.patch
docs-admin-guide-mm-damon-usage-update-for-hugepage_size-fix-fix.patch
mm-update-comments-to-refer-to-anon-rmap-rather-than-anon_vma-fix.patch
mm-selftests-add-shmem-into-memory-failure-test-fix.patch
proc-task_mmu-remove-unnecessary-inlines-in-function-definitions-fix.patch
drivers-media-v4l2-core-v4l2-vp9c-reduce-inlining.patch