Messages in this thread Patch in this message | | | From | "Matthew Wilcox (Oracle)" <> | Subject | [PATCH] mm/hwpoison: Check the subpage, not the head page | Date | Sun, 30 Jan 2022 01:30:42 +0000 |
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Hardware poison is tracked on a per-page basis, not on the head page.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> --- mm/rmap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/rmap.c b/mm/rmap.c index 6a1e8c7f6213..09b08888120e 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -1553,7 +1553,7 @@ static bool try_to_unmap_one(struct page *page, struct vm_area_struct *vma, /* Update high watermark before we lower rss */ update_hiwater_rss(mm); - if (PageHWPoison(page) && !(flags & TTU_IGNORE_HWPOISON)) { + if (PageHWPoison(subpage) && !(flags & TTU_IGNORE_HWPOISON)) { pteval = swp_entry_to_pte(make_hwpoison_entry(subpage)); if (PageHuge(page)) { hugetlb_count_sub(compound_nr(page), mm); @@ -1873,7 +1873,7 @@ static bool try_to_migrate_one(struct page *page, struct vm_area_struct *vma, * memory are supported. */ subpage = page; - } else if (PageHWPoison(page)) { + } else if (PageHWPoison(subpage)) { pteval = swp_entry_to_pte(make_hwpoison_entry(subpage)); if (PageHuge(page)) { hugetlb_count_sub(compound_nr(page), mm); -- 2.34.1
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