diff mbox series

[v8,3/6] zswap: make shrinking memcg-aware (fix)

Message ID 20231205195419.2563217-1-nphamcs@gmail.com
State New
Headers show
Series None | expand

Commit Message

Nhat Pham Dec. 5, 2023, 7:54 p.m. UTC 
Use the correct function for the onlineness check for the memcg
selection, and use mem_cgroup_iter_break() to break the iteration.

Suggested-by: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Nhat Pham <nphamcs@gmail.com>
---
 mm/zswap.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
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Patch

diff --git a/mm/zswap.c b/mm/zswap.c
index f323e45cbdc7..7a84c1454988 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -834,9 +834,9 @@  static void shrink_worker(struct work_struct *w)
 			goto resched;
 		}
 
-		if (!mem_cgroup_online(memcg)) {
+		if (!mem_cgroup_tryget_online(memcg)) {
 			/* drop the reference from mem_cgroup_iter() */
-			mem_cgroup_put(memcg);
+			mem_cgroup_iter_break(NULL, memcg);
 			pool->next_shrink = NULL;
 			spin_unlock(&zswap_pools_lock);
 
@@ -985,7 +985,7 @@  static void zswap_pool_destroy(struct zswap_pool *pool)
 	list_lru_destroy(&pool->list_lru);
 
 	spin_lock(&zswap_pools_lock);
-	mem_cgroup_put(pool->next_shrink);
+	mem_cgroup_iter_break(NULL, pool->next_shrink);
 	pool->next_shrink = NULL;
 	spin_unlock(&zswap_pools_lock);