mm: use pfn_swap_entry_folio() in copy_nonpresent_pte()

Call pfn_swap_entry_folio() as preparation for converting mm counter
functions to take a folio.

Link: https://lkml.kernel.org/r/20240111152429.3374566-8-willy@infradead.org
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/memory.c b/mm/memory.c
index a25bc8a370fd0e139440669d82dd5af22260b60a..c8dd249419142cddba5cb5babb86c9c7463c084a 100644 (file)
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -806,9 +806,9 @@ copy_nonpresent_pte(struct mm_struct *dst_mm, struct mm_struct *src_mm,
                }
                rss[MM_SWAPENTS]++;
        } else if (is_migration_entry(entry)) {
-               page = pfn_swap_entry_to_page(entry);
+               folio = pfn_swap_entry_folio(entry);
 
-               rss[mm_counter(page)]++;
+               rss[mm_counter(&folio->page)]++;
 
                if (!is_readable_migration_entry(entry) &&
                                is_cow_mapping(vm_flags)) {