The patch titled
Subject: mm/memory: add vm_normal_folio()
has been added to the -mm mm-unstable branch. Its filename is
mm-memory-add-vm_normal_folio.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-memory-add-vm_normal_folio.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Vishal Moola (Oracle)" <vishal.moola@xxxxxxxxx>
Subject: mm/memory: add vm_normal_folio()
Date: Wed, 21 Dec 2022 10:08:45 -0800
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@xxxxxxxxx
Link: https://lkml.kernel.org/r/20221221180848.20774-2-vishal.moola@xxxxxxxxx
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@xxxxxxxxx>
Reviewed-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: SeongJae Park <sj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mm.h | 2 ++
mm/memory.c | 10 ++++++++++
2 files changed, 12 insertions(+)
--- a/include/linux/mm.h~mm-memory-add-vm_normal_folio
+++ a/include/linux/mm.h
@@ -1968,6 +1968,8 @@ static inline bool can_do_mlock(void) {
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,
--- a/mm/memory.c~mm-memory-add-vm_normal_folio
+++ a/mm/memory.c
@@ -625,6 +625,16 @@ out:
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)
_
Patches currently in -mm which might be from vishal.moola@xxxxxxxxx are
mm-memory-add-vm_normal_folio.patch
madvise-convert-madvise_cold_or_pageout_pte_range-to-use-folios.patch
mm-damon-convert-damon_pa_mark_accessed_or_deactivate-to-use-folios.patch
mm-swap-convert-deactivate_page-to-folio_deactivate.patch
