[1/4] mm/list_lru: use list_lru_walk_one() in list_lru_walk_node()

Commit Message

Sebastian Andrzej Siewior July 16, 2018, 11:19 a.m. UTC

list_lru_walk_node() invokes __list_lru_walk_one() with -1 as the
memcg_idx parameter. The same can be achieved by list_lru_walk_one() and
passing NULL as memcg argument which then gets converted into -1. This
is a preparation step when the spin_lock() function is lifted to the
caller of __list_lru_walk_one().
Invoke list_lru_walk_one() instead __list_lru_walk_one() when possible.

Reviewed-by: Vladimir Davydov <[e-mail]>
Signed-off-by: Sebastian Andrzej Siewior <[e-mail]>
---
 mm/list_lru.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch

diff --git a/mm/list_lru.c b/mm/list_lru.c
index ca6dbcfe4256..344306714636 100644
--- a/mm/list_lru.c
+++ b/mm/list_lru.c
@@ -294,8 +294,8 @@  unsigned long list_lru_walk_node(struct list_lru *lru, int nid,
 	long isolated = 0;
 	int memcg_idx;
 
-	isolated += __list_lru_walk_one(lru, nid, -1, isolate, cb_arg,
-					nr_to_walk);
+	isolated += list_lru_walk_one(lru, nid, NULL, isolate, cb_arg,
+				      nr_to_walk);
 	if (*nr_to_walk > 0 && list_lru_memcg_aware(lru)) {
 		for_each_memcg_cache_index(memcg_idx) {
 			isolated += __list_lru_walk_one(lru, nid, memcg_idx,