mm/memory-failure: use folio functions throughout collect_procs()

Saves a couple of calls to compound_head().

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Jane Chu <[email protected]>
Acked-by: Miaohe Lin <[email protected]>
Cc: Dan Williams <[email protected]>
Cc: Miaohe Lin <[email protected]>
Cc: Oscar Salvador <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
(cherry picked from commit 0edb5b2)

Author: Matthew Wilcox (Oracle)

mm/memory-failure.c

@@ -722,9 +722,9 @@ static void collect_procs(struct folio *folio, struct page *page,
 {
 	if (!folio->mapping)
 		return;
-	if (unlikely(PageKsm(page)))
+	if (unlikely(folio_test_ksm(folio)))
 		collect_procs_ksm(page, tokill, force_early);
-	else if (PageAnon(page))
+	else if (folio_test_anon(folio))
 		collect_procs_anon(folio, page, tokill, force_early);
 	else
 		collect_procs_file(folio, page, tokill, force_early);