+ mm-khugepaged-use-kmem_cache.patch added to mm-unstable branch

+ mm-khugepaged-use-kmem_cache.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm/khugepaged: use KMEM_CACHE()
has been added to the -mm mm-unstable branch.  Its filename is
     mm-khugepaged-use-kmem_cache.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-khugepaged-use-kmem_cache.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 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: Wei Yang <richard.weiyang@gmail.com>
Subject: mm/khugepaged: use KMEM_CACHE()
Date: Wed, 1 Oct 2025 09:19:00 +0000

We got some late review commits during review of commit b4c9ffb54b32
("mm/khugepaged: remove definition of struct khugepaged_mm_slot").  No
need to keep the old cache name "khugepaged_mm_slot", let's simply use
KMEM_CACHE().

Link: https://lkml.kernel.org/r/20251001091900.20041-3-richard.weiyang@gmail.com
Fixes: b4c9ffb54b32 ("mm/khugepaged: remove definition of struct khugepaged_mm_slot")
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: Lance Yang <lance.yang@linux.dev>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Raghavendra K T <raghavendra.kt@amd.com>
Cc: Kiryl Shutsemau <kirill@shutemov.name>
Cc: xu xin <xu.xin16@zte.com.cn>
Cc: SeongJae Park <sj@kernel.org>
Cc: Nico Pache <npache@redhat.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Chengming Zhou <chengming.zhou@linux.dev>
Cc: Dan Carpenter <dan.carpenter@linaro.org>
Cc: Kiryl Shutsemau <kas@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

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

--- a/mm/khugepaged.c~mm-khugepaged-use-kmem_cache
+++ a/mm/khugepaged.c
@@ -376,10 +376,7 @@ int hugepage_madvise(struct vm_area_stru
 
 int __init khugepaged_init(void)
 {
-	mm_slot_cache = kmem_cache_create("khugepaged_mm_slot",
-					  sizeof(struct mm_slot),
-					  __alignof__(struct mm_slot),
-					  0, NULL);
+	mm_slot_cache = KMEM_CACHE(mm_slot, 0);
 	if (!mm_slot_cache)
 		return -ENOMEM;
 
_

Patches currently in -mm which might be from richard.weiyang@gmail.com are

mm-ksm-cleanup-mm_slot_entry-invocation.patch
mm-khugepaged-use-kmem_cache.patch