From: David Hildenbrand (Arm) <david@kernel.org>
Date: Mon, 11 May 2026 14:05:31 +0000 (+0200)
Subject: mm/bootmem_info: stop using PG_private
X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=7cb87e71e55bb8f3b234ea173964cd53278af11e;p=thirdparty%2Flinux.git

mm/bootmem_info: stop using PG_private

Nobody checks PG_private for these pages, and we can happily use
set_page_private() without setting PG_private. So let's just stop
setting/clearing PG_private.

Link: https://lore.kernel.org/20260511-bootmem_info_prep-v1-3-3fb0be6fc688@kernel.org
Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
Acked-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/bootmem_info.c b/mm/bootmem_info.c
index a0a1ecdec8d0..6e2aaab3dca9 100644
--- a/mm/bootmem_info.c
+++ b/mm/bootmem_info.c
@@ -19,7 +19,6 @@ void get_page_bootmem(unsigned long info, struct page *page,
 {
 	BUG_ON(type > 0xf);
 	BUG_ON(info > (ULONG_MAX >> 4));
-	SetPagePrivate(page);
 	set_page_private(page, info << 4 | type);
 	page_ref_inc(page);
 }
@@ -32,7 +31,6 @@ void put_page_bootmem(struct page *page)
 	       type > MEMORY_HOTPLUG_MAX_BOOTMEM_TYPE);
 
 	if (page_ref_dec_return(page) == 1) {
-		ClearPagePrivate(page);
 		set_page_private(page, 0);
 		kmemleak_free_part_phys(PFN_PHYS(page_to_pfn(page)), PAGE_SIZE);
 		free_reserved_page(page);