| Message ID | 20221208203503.20665-2-vishal.moola@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Convert deactivate_page() to folio_deactivate() | expand |
On Thu, Dec 08, 2022 at 12:35:00PM -0800, Vishal Moola (Oracle) wrote: > Introduce a wrapper function called vm_normal_folio(). This function > calls vm_normal_page() and returns the folio of the page found, or null > if no page is found. > > This function allows callers to get a folio from a pte, which will > eventually allow them to completely replace their struct page variables > with struct folio instead. > > Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
diff --git a/include/linux/mm.h b/include/linux/mm.h index 8bbcccbc5565..626ae0757bd3 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1860,6 +1860,8 @@ static inline bool can_do_mlock(void) { return false; } extern int user_shm_lock(size_t, struct ucounts *); extern void user_shm_unlock(size_t, struct ucounts *); +struct folio *vm_normal_folio(struct vm_area_struct *vma, unsigned long addr, + pte_t pte); struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr, pte_t pte); struct page *vm_normal_page_pmd(struct vm_area_struct *vma, unsigned long addr, diff --git a/mm/memory.c b/mm/memory.c index f88c351aecd4..1247c19c516c 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -672,6 +672,16 @@ struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr, return pfn_to_page(pfn); } +struct folio *vm_normal_folio(struct vm_area_struct *vma, unsigned long addr, + pte_t pte) +{ + struct page *page = vm_normal_page(vma, addr, pte); + + if (page) + return page_folio(page); + return NULL; +} + #ifdef CONFIG_TRANSPARENT_HUGEPAGE struct page *vm_normal_page_pmd(struct vm_area_struct *vma, unsigned long addr, pmd_t pmd)
Introduce a wrapper function called vm_normal_folio(). This function calls vm_normal_page() and returns the folio of the page found, or null if no page is found. This function allows callers to get a folio from a pte, which will eventually allow them to completely replace their struct page variables with struct folio instead. Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com> --- include/linux/mm.h | 2 ++ mm/memory.c | 10 ++++++++++ 2 files changed, 12 insertions(+)