On 11/7/23 5:52 AM, Kefeng Wang wrote:
Use a folio in validate_page_before_insert() to save two
compound_head() calls.
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
---
mm/memory.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/mm/memory.c b/mm/memory.c
index 1f18ed4a5497..b1bff4d245da 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1836,9 +1836,12 @@ pte_t *__get_locked_pte(struct mm_struct *mm, unsigned long addr,
static int validate_page_before_insert(struct page *page)
{
- if (PageAnon(page) || PageSlab(page) || page_has_type(page))
+ struct folio *folio = page_folio(page);
+
+ if (folio_test_anon(folio) || folio_test_slab(folio) ||
+ page_has_type(page))
return -EINVAL;
- flush_dcache_page(page);
+ flush_dcache_folio(folio);
return 0;
}
Reviewed-by: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
