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

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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/20221124131641.1523772-1-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Anshuman Khandual 2022-11-24 18:46:41 +05:30 committed by Andrew Morton
parent 8d9b63708d
commit 373dfda2ba
1 changed files with 3 additions and 3 deletions
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6
include/linux/mm.h
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@ -2510,7 +2510,7 @@ 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));
@ -2518,7 +2518,7 @@ static struct page *pmd_to_page(pmd_t *pmd)
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