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-rw-r--r--mm/list_lru.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/mm/list_lru.c b/mm/list_lru.c
index 522b98ca76b3..286f92a0963e 100644
--- a/mm/list_lru.c
+++ b/mm/list_lru.c
@@ -219,7 +219,6 @@ __list_lru_walk_one(struct list_lru *lru, int nid, int memcg_idx,
struct list_head *item, *n;
unsigned long isolated = 0;
- spin_lock(&nlru->lock);
l = list_lru_from_memcg_idx(nlru, memcg_idx);
restart:
list_for_each_safe(item, n, &l->list) {
@@ -265,8 +264,6 @@ restart:
BUG();
}
}
-
- spin_unlock(&nlru->lock);
return isolated;
}
@@ -275,8 +272,14 @@ list_lru_walk_one(struct list_lru *lru, int nid, struct mem_cgroup *memcg,
list_lru_walk_cb isolate, void *cb_arg,
unsigned long *nr_to_walk)
{
- return __list_lru_walk_one(lru, nid, memcg_cache_id(memcg),
- isolate, cb_arg, nr_to_walk);
+ struct list_lru_node *nlru = &lru->node[nid];
+ unsigned long ret;
+
+ spin_lock(&nlru->lock);
+ ret = __list_lru_walk_one(lru, nid, memcg_cache_id(memcg),
+ isolate, cb_arg, nr_to_walk);
+ spin_unlock(&nlru->lock);
+ return ret;
}
EXPORT_SYMBOL_GPL(list_lru_walk_one);
@@ -291,8 +294,13 @@ unsigned long list_lru_walk_node(struct list_lru *lru, int nid,
nr_to_walk);
if (*nr_to_walk > 0 && list_lru_memcg_aware(lru)) {
for_each_memcg_cache_index(memcg_idx) {
+ struct list_lru_node *nlru = &lru->node[nid];
+
+ spin_lock(&nlru->lock);
isolated += __list_lru_walk_one(lru, nid, memcg_idx,
isolate, cb_arg, nr_to_walk);
+ spin_unlock(&nlru->lock);
+
if (*nr_to_walk <= 0)
break;
}