The patch titled
Subject: mm: hugetlb_vmemmap: simplify hugetlb_vmemmap_init() a bit
has been added to the -mm mm-unstable branch. Its filename is
mm-hugetlb_vmemmap-simplify-hugetlb_vmemmap_init-a-bit.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-hugetlb_vmemmap-simplify-hugetlb_vmemmap_init-a-bit.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Subject: mm: hugetlb_vmemmap: simplify hugetlb_vmemmap_init() a bit
Date: Thu, 23 Feb 2023 14:59:47 +0800
The check of IS_ENABLED(CONFIG_PROC_SYSCTL) is unnecessary since
register_sysctl_init() will be empty in this case. So, there is no
warnings after removing the check.
Link: https://lkml.kernel.org/r/20230223065947.64134-1-songmuchun@xxxxxxxxxxxxx
Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/hugetlb_vmemmap.c | 14 ++++++--------
1 file changed, 6 insertions(+), 8 deletions(-)
--- a/mm/hugetlb_vmemmap.c~mm-hugetlb_vmemmap-simplify-hugetlb_vmemmap_init-a-bit
+++ a/mm/hugetlb_vmemmap.c
@@ -590,17 +590,15 @@ static struct ctl_table hugetlb_vmemmap_
static int __init hugetlb_vmemmap_init(void)
{
+ const struct hstate *h;
+
/* HUGETLB_VMEMMAP_RESERVE_SIZE should cover all used struct pages */
BUILD_BUG_ON(__NR_USED_SUBPAGE * sizeof(struct page) > HUGETLB_VMEMMAP_RESERVE_SIZE);
- if (IS_ENABLED(CONFIG_PROC_SYSCTL)) {
- const struct hstate *h;
-
- for_each_hstate(h) {
- if (hugetlb_vmemmap_optimizable(h)) {
- register_sysctl_init("vm", hugetlb_vmemmap_sysctls);
- break;
- }
+ for_each_hstate(h) {
+ if (hugetlb_vmemmap_optimizable(h)) {
+ register_sysctl_init("vm", hugetlb_vmemmap_sysctls);
+ break;
}
}
return 0;
_
Patches currently in -mm which might be from songmuchun@xxxxxxxxxxxxx are
mm-hugetlb_vmemmap-simplify-hugetlb_vmemmap_init-a-bit.patch
