6.1-stable review patch. If anyone has any objections, please let me know.
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From: Vishal Moola (Oracle) vishal.moola@gmail.com
[ Upstream commit 318e9342fbbb6888d903d86e83865609901a1c65 ]
Patch series "Convert deactivate_page() to folio_deactivate()", v4.
Deactivate_page() has already been converted to use folios. This patch series modifies the callers of deactivate_page() to use folios. It also introduces vm_normal_folio() to assist with folio conversions, and converts deactivate_page() to folio_deactivate() which takes in a folio.
This patch (of 4):
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.
Link: https://lkml.kernel.org/r/20221221180848.20774-1-vishal.moola@gmail.com Link: https://lkml.kernel.org/r/20221221180848.20774-2-vishal.moola@gmail.com Signed-off-by: Vishal Moola (Oracle) vishal.moola@gmail.com Reviewed-by: Matthew Wilcox (Oracle) willy@infradead.org Cc: SeongJae Park sj@kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Stable-dep-of: 24526268f4e3 ("mm: mempolicy: keep VMA walk if both MPOL_MF_STRICT and MPOL_MF_MOVE are specified") Signed-off-by: Sasha Levin sashal@kernel.org --- include/linux/mm.h | 2 ++ mm/memory.c | 10 ++++++++++ 2 files changed, 12 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h index 104ec00823da8..eefb0948110ae 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1906,6 +1906,8 @@ 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 2083078cd0615..0d1b3ee8fcd7a 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)