Re: [PATCH 7/8] mm: memory-failure: fetch compound head after extra page refcnt is held

[Naoya Horiguchi]

On Sat, Jul 08, 2023 at 04:57:43PM +0800, Miaohe Lin wrote:
> Page might become thp, huge page or being splited after compound head
> is fetched but before page refcnt is bumped. So hpage might be a tail
> page leading to VM_BUG_ON_PAGE(PageTail(page)) in PageTransHuge().
> 
> Fixes: 415c64c1453a ("mm/memory-failure: split thp earlier in memory error handling")
> Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>

Acked-by: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>