+ alloc_tag-move-memory_allocation_profiling_sysctls-into-rodata.patch added to mm-new branch

+ alloc_tag-move-memory_allocation_profiling_sysctls-into-rodata.patch added to mm-new branch

[Andrew Morton]

The patch titled
     Subject: alloc_tag: move memory_allocation_profiling_sysctls into .rodata
has been added to the -mm mm-new branch.  Its filename is
     alloc_tag-move-memory_allocation_profiling_sysctls-into-rodata.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/alloc_tag-move-memory_allocation_profiling_sysctls-into-rodata.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews.  Please do not hesitate to respond to
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fixup patches in mm-new.

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------------------------------------------------------
From: Joel Granados <joel.granados@kernel.org>
Subject: alloc_tag: move memory_allocation_profiling_sysctls into .rodata
Date: Mon, 15 Dec 2025 16:47:37 +0100

Remove the change in file mode permissions done before initializing the
sysctl.  It is not necessary as the writing of the kernel variable will be
blocked by the proc_mem_profiling_handler when writing is disallowed (also
controlled by mem_profiling_support).

Link: https://lkml.kernel.org/r/20251215-jag-alloc_tag_const-v1-1-35ea56a1ce13@kernel.org
Signed-off-by: Joel Granados <joel.granados@kernel.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/alloc_tag.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

--- a/lib/alloc_tag.c~alloc_tag-move-memory_allocation_profiling_sysctls-into-rodata
+++ a/lib/alloc_tag.c
@@ -783,7 +783,7 @@ static int proc_mem_profiling_handler(co
 }
 
 
-static struct ctl_table memory_allocation_profiling_sysctls[] = {
+static const struct ctl_table memory_allocation_profiling_sysctls[] = {
 	{
 		.procname	= "mem_profiling",
 		.data		= &mem_alloc_profiling_key,
@@ -798,9 +798,6 @@ static struct ctl_table memory_allocatio
 
 static void __init sysctl_init(void)
 {
-	if (!mem_profiling_support)
-		memory_allocation_profiling_sysctls[0].mode = 0444;
-
 	register_sysctl_init("vm", memory_allocation_profiling_sysctls);
 }
 #else /* CONFIG_SYSCTL */
_

Patches currently in -mm which might be from joel.granados@kernel.org are

alloc_tag-move-memory_allocation_profiling_sysctls-into-rodata.patch