mm/vmscan: remove ignore_references argument of reclaim_folio_list()

All reclaim_folio_list() callers are passing 'true' for
'ignore_references' parameter.  In other words, the parameter is not
really being used.  Simplify the code by removing the parameter.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: SeongJae Park <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: sjp38

mm/vmscan.c

@@ -2109,8 +2109,7 @@ static void shrink_active_list(unsigned long nr_to_scan,
 }
 
 static unsigned int reclaim_folio_list(struct list_head *folio_list,
-				      struct pglist_data *pgdat,
-				      bool ignore_references)
+				      struct pglist_data *pgdat)
 {
 	struct reclaim_stat dummy_stat;
 	unsigned int nr_reclaimed;
@@ -2123,7 +2122,7 @@ static unsigned int reclaim_folio_list(struct list_head *folio_list,
 		.no_demotion = 1,
 	};
 
-	nr_reclaimed = shrink_folio_list(folio_list, pgdat, &sc, &dummy_stat, ignore_references);
+	nr_reclaimed = shrink_folio_list(folio_list, pgdat, &sc, &dummy_stat, true);
 	while (!list_empty(folio_list)) {
 		folio = lru_to_folio(folio_list);
 		list_del(&folio->lru);
@@ -2155,12 +2154,11 @@ unsigned long reclaim_pages(struct list_head *folio_list)
 			continue;
 		}
 
-		nr_reclaimed += reclaim_folio_list(&node_folio_list, NODE_DATA(nid),
-						   true);
+		nr_reclaimed += reclaim_folio_list(&node_folio_list, NODE_DATA(nid));
 		nid = folio_nid(lru_to_folio(folio_list));
 	} while (!list_empty(folio_list));
 
-	nr_reclaimed += reclaim_folio_list(&node_folio_list, NODE_DATA(nid), true);
+	nr_reclaimed += reclaim_folio_list(&node_folio_list, NODE_DATA(nid));
 
 	memalloc_noreclaim_restore(noreclaim_flag);