The patch titled
Subject: mm,hwpoison: cleanup unused PageHuge() check
has been added to the -mm tree. Its filename is
mmhwpoison-cleanup-unused-pagehuge-check.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mmhwpoison-cleanup-unused-pagehuge-check.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mmhwpoison-cleanup-unused-pagehuge-check.patch
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------------------------------------------------------
From: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Subject: mm,hwpoison: cleanup unused PageHuge() check
Patch series "HWPOISON: soft offline rework", v3.
This patch (of 15):
Drop the PageHuge check, which is dead code since memory_failure() forks
into memory_failure_hugetlb() for hugetlb pages.
memory_failure() and memory_failure_hugetlb() shares some functions like
hwpoison_user_mappings() and identify_page_state(), so they should
properly handle 4kB page, thp, and hugetlb.
Link: http://lkml.kernel.org/r/20200624150137.7052-1-nao.horiguchi@xxxxxxxxx
Link: http://lkml.kernel.org/r/20200624150137.7052-2-nao.horiguchi@xxxxxxxxx
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Cc: Dmitry Yakunin <zeil@xxxxxxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory-failure.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
--- a/mm/memory-failure.c~mmhwpoison-cleanup-unused-pagehuge-check
+++ a/mm/memory-failure.c
@@ -1382,10 +1382,7 @@ int memory_failure(unsigned long pfn, in
* page_remove_rmap() in try_to_unmap_one(). So to determine page status
* correctly, we save a copy of the page flags at this time.
*/
- if (PageHuge(p))
- page_flags = hpage->flags;
- else
- page_flags = p->flags;
+ page_flags = p->flags;
/*
* unpoison always clear PG_hwpoison inside page lock
_
Patches currently in -mm which might be from naoya.horiguchi@xxxxxxx are
mmhwpoison-cleanup-unused-pagehuge-check.patch
mm-hwpoison-remove-recalculating-hpage.patch
mmmadvise-call-soft_offline_page-without-mf_count_increased.patch
mmhwpoison-inject-dont-pin-for-hwpoison_filter.patch
mmhwpoison-remove-mf_count_increased.patch
mmhwpoison-remove-flag-argument-from-soft-offline-functions.patch
mmhwpoison-introduce-mf_msg_unsplit_thp.patch
