[PATCH] mm: migrate: drop redundant anonymous statistics for file folios migration

[Baolin Wang <baolin.wang@linux.alibaba.com>]

Commit 5d65c8d758f2 ("mm: count the number of anonymous THPs per size") adds
a new anonymous counter per THP size, however, when folio_mapping() is not NULL
during folio migration, it means this is not an anonymous folio, so remove the
redundant anonymous statistics in this case.

Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
---
 mm/migrate.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/mm/migrate.c b/mm/migrate.c
index e9e00d1d1d19..d7fdfdd23fd0 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -523,8 +523,6 @@ static int __folio_migrate_mapping(struct address_space *mapping,
 	 */
 	newfolio->index = folio->index;
 	newfolio->mapping = folio->mapping;
-	if (folio_test_anon(folio) && folio_test_large(folio))
-		mod_mthp_stat(folio_order(folio), MTHP_STAT_NR_ANON, 1);
 	folio_ref_add(newfolio, nr); /* add cache reference */
 	if (folio_test_swapbacked(folio)) {
 		__folio_set_swapbacked(newfolio);
-- 
2.39.3