[PATCH 10/33] mm: Convert pmd_ptlock_free() to use ptdescs

Vishal Moola (Oracle)
2023-04-17T20:53:52Z

This removes some direct accesses to struct page, working towards
splitting out struct ptdesc from struct page.

Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
---
include/linux/mm.h | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index d2485a110936..2390fc2542aa 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2911,12 +2911,12 @@ static inline bool pmd_ptlock_init(struct ptdesc *ptdesc)
return ptlock_init(ptdesc);
}

-static inline void pmd_ptlock_free(struct page *page)
+static inline void pmd_ptlock_free(struct ptdesc *ptdesc)
{
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
- VM_BUG_ON_PAGE(page->pmd_huge_pte, page);
+ VM_BUG_ON_PAGE(ptdesc->pmd_huge_pte, ptdesc_page(ptdesc));
#endif
- ptlock_free(page);
+ ptlock_free(ptdesc_page(ptdesc));
}

#define pmd_huge_pte(mm, pmd) (pmd_ptdesc(pmd)->pmd_huge_pte)
@@ -2929,7 +2929,7 @@ static inline spinlock_t *pmd_lockptr(struct mm_struct *mm, pmd_t *pmd)
}

static inline bool pmd_ptlock_init(struct ptdesc *ptdesc) { return true; }
-static inline void pmd_ptlock_free(struct page *page) {}
+static inline void pmd_ptlock_free(struct ptdesc *ptdesc) {}

#define pmd_huge_pte(mm, pmd) ((mm)->pmd_huge_pte)

@@ -2953,7 +2953,7 @@ static inline bool pgtable_pmd_page_ctor(struct page *page)

static inline void pgtable_pmd_page_dtor(struct page *page)
{
- pmd_ptlock_free(page);
+ pmd_ptlock_free(page_ptdesc(page));
__ClearPageTable(page);
dec_lruvec_page_state(page, NR_PAGETABLE);
}
--
2.39.2