At swapoff time, we're going to swap in the pages continuously. So calling
lookup_swap_cache would confuse statistics. We should use find_get_page
directly here.
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
---
mm/swapfile.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 960d14a4b19e..e033a53a99df 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1865,7 +1865,12 @@ static int unuse_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
offset = swp_offset(entry);
pte_unmap(pte);
swap_map = &si->swap_map[offset];
- page = lookup_swap_cache(entry, vma, addr);
+ /*
+ * Since we're going to swap in the pages continuously,
+ * calling lookup_swap_cache() would confuse statistics.
+ */
+ page = find_get_page(swap_address_space(entry),
+ swp_offset(entry));
if (!page) {
struct vm_fault vmf = {
.vma = vma,
--
2.23.0
