The quilt patch titled
Subject: mm, hwpoison: fix extra put_page() in soft_offline_page()
has been removed from the -mm tree. Its filename was
mm-hwpoison-fix-extra-put_page-in-soft_offline_page.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Subject: mm, hwpoison: fix extra put_page() in soft_offline_page()
Date: Thu, 18 Aug 2022 21:00:13 +0800
When hwpoison_filter() refuses to soft offline a page, the page refcnt
incremented previously by MF_COUNT_INCREASED would have been consumed via
get_hwpoison_page() if ret <= 0. So the put_ref_page() here will put the
extra one. Remove it to fix the issue.
Link: https://lkml.kernel.org/r/20220818130016.45313-4-linmiaohe@xxxxxxxxxx
Fixes: 9113eaf331bf ("mm/memory-failure.c: add hwpoison_filter for soft offline")
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Acked-by: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory-failure.c | 2 --
1 file changed, 2 deletions(-)
--- a/mm/memory-failure.c~mm-hwpoison-fix-extra-put_page-in-soft_offline_page
+++ a/mm/memory-failure.c
@@ -2591,8 +2591,6 @@ retry:
if (hwpoison_filter(page)) {
if (ret > 0)
put_page(page);
- else
- put_ref_page(ref_page);
mutex_unlock(&mf_mutex);
return -EOPNOTSUPP;
_
Patches currently in -mm which might be from linmiaohe@xxxxxxxxxx are
mm-hwpoison-use-clearpagehwpoison-in-memory_failure.patch
mm-hwpoison-use-__pagemovable-to-detect-non-lru-movable-pages.patch
mm-hwpoison-use-num_poisoned_pages_sub-to-decrease-num_poisoned_pages.patch
mm-hwpoison-avoid-unneeded-page_mapped_in_vma-overhead-in-collect_procs_anon.patch
mm-hwpoison-check-pagetable-explicitly-in-hwpoison_user_mappings.patch
mm-hwpoison-cleanup-some-obsolete-comments.patch
writeback-remove-unused-macro-dirty_full_scope.patch
