Since the only user zswap_lru_putback() has gone, remove
list_lru_putback() too.
Signed-off-by: Chengming Zhou <zhouchengming@xxxxxxxxxxxxx>
---
include/linux/list_lru.h | 16 ----------------
mm/list_lru.c | 14 --------------
mm/zswap.c | 2 +-
3 files changed, 1 insertion(+), 31 deletions(-)
diff --git a/include/linux/list_lru.h b/include/linux/list_lru.h
index c679e6b293c4..f2882a820690 100644
--- a/include/linux/list_lru.h
+++ b/include/linux/list_lru.h
@@ -168,22 +168,6 @@ static inline unsigned long list_lru_count(struct list_lru *lru)
void list_lru_isolate(struct list_lru_one *list, struct list_head *item);
void list_lru_isolate_move(struct list_lru_one *list, struct list_head *item,
struct list_head *head);
-/**
- * list_lru_putback: undo list_lru_isolate
- * @lru: the lru pointer.
- * @item: the item to put back.
- * @nid: the node id of the sublist to put the item back to.
- * @memcg: the cgroup of the sublist to put the item back to.
- *
- * Put back an isolated item into its original LRU. Note that unlike
- * list_lru_add, this does not increment the node LRU count (as
- * list_lru_isolate does not originally decrement this count).
- *
- * Since we might have dropped the LRU lock in between, recompute list_lru_one
- * from the node's id and memcg.
- */
-void list_lru_putback(struct list_lru *lru, struct list_head *item, int nid,
- struct mem_cgroup *memcg);
typedef enum lru_status (*list_lru_walk_cb)(struct list_head *item,
struct list_lru_one *list, spinlock_t *lock, void *cb_arg);
diff --git a/mm/list_lru.c b/mm/list_lru.c
index 158781d1d3c2..61f3b6b1134f 100644
--- a/mm/list_lru.c
+++ b/mm/list_lru.c
@@ -162,20 +162,6 @@ void list_lru_isolate_move(struct list_lru_one *list, struct list_head *item,
}
EXPORT_SYMBOL_GPL(list_lru_isolate_move);
-void list_lru_putback(struct list_lru *lru, struct list_head *item, int nid,
- struct mem_cgroup *memcg)
-{
- struct list_lru_one *list =
- list_lru_from_memcg_idx(lru, nid, memcg_kmem_id(memcg));
-
- if (list_empty(item)) {
- list_add_tail(item, &list->list);
- if (!list->nr_items++)
- set_shrinker_bit(memcg, nid, lru_shrinker_id(lru));
- }
-}
-EXPORT_SYMBOL_GPL(list_lru_putback);
-
unsigned long list_lru_count_one(struct list_lru *lru,
int nid, struct mem_cgroup *memcg)
{
diff --git a/mm/zswap.c b/mm/zswap.c
index f5cb5a46e4d7..de68a5928527 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -411,7 +411,7 @@ static void zswap_lru_add(struct list_lru *list_lru, struct zswap_entry *entry)
* 2. list_lru_add() is called after memcg->kmemcg_id is updated. The
* new entry will be added directly to memcg's parent's list_lru.
*
- * Similar reasoning holds for list_lru_del() and list_lru_putback().
+ * Similar reasoning holds for list_lru_del().
*/
rcu_read_lock();
memcg = mem_cgroup_from_entry(entry);
--
b4 0.10.1
