mm/thp: rename pmd_to_page() as pmd_pgtable_page()

Current pmd_to_page(), which derives the page table page containing the pmd address has a very misleading name. The problem being, it sounds similar to pmd_page() which derives page embedded in a given pmd entry either for next level page or a mapped huge page. Rename it as pmd_pgtable_page() instead. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Anshuman Khandual <[email protected]> Cc: Mike Kravetz <[email protected]> Cc: "Kirill A. Shutemov" <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
kawasaki · Nov 30, 2022 · 373dfda · 373dfda
1 parent 8d9b637
commit 373dfda
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/include/linux/mm.h b/include/linux/mm.h
@@ -2510,15 +2510,15 @@ static inline void pgtable_pte_page_dtor(struct page *page)
 
 #if USE_SPLIT_PMD_PTLOCKS
 
-static struct page *pmd_to_page(pmd_t *pmd)
+static struct page *pmd_pgtable_page(pmd_t *pmd)
 {
 	unsigned long mask = ~(PTRS_PER_PMD * sizeof(pmd_t) - 1);
 	return virt_to_page((void *)((unsigned long) pmd & mask));
 }
 
 static inline spinlock_t *pmd_lockptr(struct mm_struct *mm, pmd_t *pmd)
 {
-	return ptlock_ptr(pmd_to_page(pmd));
+	return ptlock_ptr(pmd_pgtable_page(pmd));
 }
 
 static inline bool pmd_ptlock_init(struct page *page)
@@ -2537,7 +2537,7 @@ static inline void pmd_ptlock_free(struct page *page)
 	ptlock_free(page);
 }
 
-#define pmd_huge_pte(mm, pmd) (pmd_to_page(pmd)->pmd_huge_pte)
+#define pmd_huge_pte(mm, pmd) (pmd_pgtable_page(pmd)->pmd_huge_pte)
 
 #else