Re: [PATCH v2] mm/memory-failure: teach kill_accessing_process to accept hugetlb tail page pfn

On Fri, Dec 19, 2025 at 10:55:16AM -0700, Jane Chu wrote:

static int check_hwpoisoned_entry(pte_t pte, unsigned long addr, short shift,

• 		unsigned long poisoned_pfn, struct to_kill *tk)
  

• 		unsigned long poisoned_pfn, struct to_kill *tk,
  

• 		int pte_nr)
  

if we pass in huge_page_mask() instead ...

{ unsigned long pfn = 0;

• unsigned long hwpoison_vaddr;

if (pte_present(pte)) { pfn = pte_pfn(pte); @@ -694,10 +696,11 @@ static int check_hwpoisoned_entry(pte_t pte, unsigned long addr, short shift, pfn = swp_offset_pfn(swp); }

• if (!pfn || pfn != poisoned_pfn)

• if (!pfn || (pfn > poisoned_pfn || (pfn + pte_nr - 1) < poisoned_pfn))

... then we can simplify this to:

if (!pfn || ((pfn | mask) != (poisoned_pfn | mask))

return 0;

@@ -2037,6 +2038,7 @@ static int try_memory_failure_hugetlb(unsigned long pfn, int flags, int *hugetlb return action_result(pfn, MF_MSG_GET_HWPOISON, MF_IGNORED); }

• folio = page_folio(p); folio_lock(folio);

unnecessary whitespace change