diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/huge_mm.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 4d5bb67dc4ec..7748489fde1b 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -482,9 +482,14 @@ static inline bool is_huge_zero_folio(const struct folio *folio) return READ_ONCE(huge_zero_folio) == folio; } +static inline bool is_huge_zero_pfn(unsigned long pfn) +{ + return READ_ONCE(huge_zero_pfn) == (pfn & ~(HPAGE_PMD_NR - 1)); +} + static inline bool is_huge_zero_pmd(pmd_t pmd) { - return pmd_present(pmd) && READ_ONCE(huge_zero_pfn) == pmd_pfn(pmd); + return pmd_present(pmd) && is_huge_zero_pfn(pmd_pfn(pmd)); } struct folio *mm_get_huge_zero_folio(struct mm_struct *mm); @@ -632,6 +637,11 @@ static inline bool is_huge_zero_folio(const struct folio *folio) return false; } +static inline bool is_huge_zero_pfn(unsigned long pfn) +{ + return false; +} + static inline bool is_huge_zero_pmd(pmd_t pmd) { return false; |