On 11/7/23 5:52 AM, Kefeng Wang wrote:
Let's rename page_copy_prealloc() to folio_prealloc(), which could
be reused in more functons, as it maybe zero the new page, pass a
new should_zero to it, and call the vma_alloc_zeroed_movable_folio()
if need_zero is true.
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
---
mm/memory.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/mm/memory.c b/mm/memory.c
index b1bff4d245da..062136d25da3 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -988,12 +988,17 @@ copy_present_pte(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma,
return 0;
}
-static inline struct folio *page_copy_prealloc(struct mm_struct *src_mm,
- struct vm_area_struct *vma, unsigned long addr)
+static inline struct folio *folio_prealloc(struct mm_struct *src_mm,
+ struct vm_area_struct *vma, unsigned long addr, bool need_zero)
{
struct folio *new_folio;
- new_folio = vma_alloc_folio(GFP_HIGHUSER_MOVABLE, 0, vma, addr, false);
+ if (need_zero)
+ new_folio = vma_alloc_zeroed_movable_folio(vma, addr);
+ else
+ new_folio = vma_alloc_folio(GFP_HIGHUSER_MOVABLE, 0, vma,
+ addr, false);
+
if (!new_folio)
return NULL;
@@ -1125,7 +1130,7 @@ copy_pte_range(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma,
} else if (ret == -EBUSY) {
goto out;
} else if (ret == -EAGAIN) {
- prealloc = page_copy_prealloc(src_mm, src_vma, addr);
+ prealloc = folio_prealloc(src_mm, src_vma, addr, false);
if (!prealloc)
return -ENOMEM;
} else if (ret) {
Reviewed-by: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
