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mm/hwpoison-inject: support injecting hwpoison to free page
memory_failure() can handle free buddy page. Support injecting hwpoison to free page by adding is_free_buddy_page check when hwpoison filter is disabled. [akpm@linux-foundation.org: export is_free_buddy_page() to modules] Link: https://lkml.kernel.org/r/20220218092052.3853-1-linmiaohe@huawei.com Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Cc: Naoya Horiguchi <naoya.horiguchi@nec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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2 changed files with 3 additions and 2 deletions
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@ -32,9 +32,9 @@ static int hwpoison_inject(void *data, u64 val)
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shake_page(hpage);
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/*
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* This implies unable to support non-LRU pages.
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* This implies unable to support non-LRU pages except free page.
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*/
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if (!PageLRU(hpage) && !PageHuge(p))
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if (!PageLRU(hpage) && !PageHuge(p) && !is_free_buddy_page(p))
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return 0;
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/*
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@ -9417,6 +9417,7 @@ bool is_free_buddy_page(struct page *page)
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return order < MAX_ORDER;
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}
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EXPORT_SYMBOL(is_free_buddy_page);
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#ifdef CONFIG_MEMORY_FAILURE
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/*
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