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authorMatthew Wilcox (Oracle) <willy@infradead.org>2022-01-21 10:44:52 -0500
committerMatthew Wilcox (Oracle) <willy@infradead.org>2022-03-21 12:59:03 -0400
commitaf28a988b313a601c12c410a42e485ca46adcfee (patch)
tree2c5e610739fccb373154c4abdd1406de7330c127 /mm/rmap.c
parentb3ac04132c4b9bc5c9c14608424d410e7ca3b400 (diff)
mm/huge_memory: Convert __split_huge_pmd() to take a folio
Convert split_huge_pmd_address() at the same time since it only passes the folio through, and its two callers already have a folio on hand. Removes numerous calls to compound_head() and removes an assumption that a page cannot be larger than a PMD. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Diffstat (limited to 'mm/rmap.c')
-rw-r--r--mm/rmap.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index 36eef54d05d8..8b3d44e56e30 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1410,6 +1410,7 @@ out:
static bool try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
unsigned long address, void *arg)
{
+ struct folio *folio = page_folio(page);
struct mm_struct *mm = vma->vm_mm;
DEFINE_PAGE_VMA_WALK(pvmw, page, vma, address, 0);
pte_t pteval;
@@ -1428,7 +1429,7 @@ static bool try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
pvmw.flags = PVMW_SYNC;
if (flags & TTU_SPLIT_HUGE_PMD)
- split_huge_pmd_address(vma, address, false, page);
+ split_huge_pmd_address(vma, address, false, folio);
/*
* For THP, we have to assume the worse case ie pmd for invalidation.
@@ -1700,6 +1701,7 @@ void try_to_unmap(struct page *page, enum ttu_flags flags)
static bool try_to_migrate_one(struct page *page, struct vm_area_struct *vma,
unsigned long address, void *arg)
{
+ struct folio *folio = page_folio(page);
struct mm_struct *mm = vma->vm_mm;
DEFINE_PAGE_VMA_WALK(pvmw, page, vma, address, 0);
pte_t pteval;
@@ -1722,7 +1724,7 @@ static bool try_to_migrate_one(struct page *page, struct vm_area_struct *vma,
* TTU_SPLIT_HUGE_PMD and it wants to freeze.
*/
if (flags & TTU_SPLIT_HUGE_PMD)
- split_huge_pmd_address(vma, address, true, page);
+ split_huge_pmd_address(vma, address, true, folio);
/*
* For THP, we have to assume the worse case ie pmd for invalidation.