From: Frank van der Linden <fvdl@google.com>
Date: Fri, 28 Feb 2025 18:29:06 +0000 (+0000)
Subject: mm/hugetlb: remove redundant __ClearPageReserved
X-Git-Tag: v6.15-rc1~81^2~293
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=992e5491b6b83e4de28b14ee96347ff6bf16280a;p=thirdparty%2Fkernel%2Flinux.git

mm/hugetlb: remove redundant __ClearPageReserved

In hugetlb_folio_init_tail_vmemmap, the reserved flag is cleared for the
tail page just before it is zeroed out, which is redundant.  Remove the
__ClearPageReserved call.

Link: https://lkml.kernel.org/r/20250228182928.2645936-6-fvdl@google.com
Signed-off-by: Frank van der Linden <fvdl@google.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dan Carpenter <dan.carpenter@linaro.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Joao Martins <joao.m.martins@oracle.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Roman Gushchin (Cruise) <roman.gushchin@linux.dev>
Cc: Usama Arif <usamaarif642@gmail.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 2585d4da6c453..d5f616d07e81e 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -3210,7 +3210,6 @@ static void __init hugetlb_folio_init_tail_vmemmap(struct folio *folio,
 	for (pfn = head_pfn + start_page_number; pfn < end_pfn; pfn++) {
 		struct page *page = pfn_to_page(pfn);
 
-		__ClearPageReserved(folio_page(folio, pfn - head_pfn));
 		__init_single_page(page, pfn, zone, nid);
 		prep_compound_tail((struct page *)folio, pfn - head_pfn);
 		ret = page_ref_freeze(page, 1);