[merged] mm-hwpoison-add-in-use-hugepage-hwpoison-filter-judgement.patch removed from -mm tree

[merged] mm-hwpoison-add-in-use-hugepage-hwpoison-filter-judgement.patch removed from -mm tree

[Andrew Morton]

The patch titled
     Subject: mm/hwpoison: add in-use hugepage hwpoison filter judgement
has been removed from the -mm tree.  Its filename was
     mm-hwpoison-add-in-use-hugepage-hwpoison-filter-judgement.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: luofei <luofei@unicloud.com>
Subject: mm/hwpoison: add in-use hugepage hwpoison filter judgement

After successfully obtaining the reference count of the huge page, it is
still necessary to call hwpoison_filter() to make a filter judgement,
otherwise the filter hugepage will be unmaped and the related process may
be killed.

Link: https://lkml.kernel.org/r/20220223082254.2769757-1-luofei@unicloud.com
Signed-off-by: luofei <luofei@unicloud.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memory-failure.c |    8 ++++++++
 1 file changed, 8 insertions(+)

--- a/mm/memory-failure.c~mm-hwpoison-add-in-use-hugepage-hwpoison-filter-judgement
+++ a/mm/memory-failure.c
@@ -1534,6 +1534,14 @@ static int memory_failure_hugetlb(unsign
 	lock_page(head);
 	page_flags = head->flags;
 
+	if (hwpoison_filter(p)) {
+		if (TestClearPageHWPoison(head))
+			num_poisoned_pages_dec();
+		put_page(p);
+		res = -EOPNOTSUPP;
+		goto out;
+	}
+
 	/*
 	 * TODO: hwpoison for pud-sized hugetlb doesn't work right now, so
 	 * simply disable it. In order to make it work properly, we need
_

Patches currently in -mm which might be from luofei@unicloud.com are