The patch titled
Subject: mprotect: use pfn_swap_entry_folio
has been added to the -mm mm-unstable branch. Its filename is
mprotect-use-pfn_swap_entry_folio.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mprotect-use-pfn_swap_entry_folio.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: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mprotect: use pfn_swap_entry_folio
Date: Thu, 11 Jan 2024 15:24:22 +0000
We only want to know whether the folio is anonymous, so use
pfn_swap_entry_folio() and save a call to compound_head().
Link: https://lkml.kernel.org/r/20240111152429.3374566-4-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mprotect.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/mm/mprotect.c~mprotect-use-pfn_swap_entry_folio
+++ a/mm/mprotect.c
@@ -198,13 +198,13 @@ static long change_pte_range(struct mmu_
pte_t newpte;
if (is_writable_migration_entry(entry)) {
- struct page *page = pfn_swap_entry_to_page(entry);
+ struct folio *folio = pfn_swap_entry_folio(entry);
/*
* A protection check is difficult so
* just be safe and disable write
*/
- if (PageAnon(page))
+ if (folio_test_anon(folio))
entry = make_readable_exclusive_migration_entry(
swp_offset(entry));
else
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
memcg-convert-mem_cgroup_move_charge_pte_range-to-use-a-folio.patch
memcg-return-the-folio-in-union-mc_target.patch
memcg-use-a-folio-in-get_mctgt_type.patch
memcg-use-a-folio-in-get_mctgt_type_thp.patch
mm-add-pfn_swap_entry_folio.patch
proc-use-pfn_swap_entry_folio-where-obvious.patch
mprotect-use-pfn_swap_entry_folio.patch
bounds-support-non-power-of-two-config_nr_cpus.patch
