linux-kernel - [PATCH v8 3/6] zswap: make shrinking memcg-aware (fix 2)

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Message-Id: <20231206030627.4155634-1-nphamcs@gmail.com>
Date:   Tue,  5 Dec 2023 19:06:27 -0800
From:   Nhat Pham <nphamcs@...il.com>
To:     akpm@...ux-foundation.org
Cc:     hannes@...xchg.org, cerasuolodomenico@...il.com,
        yosryahmed@...gle.com, sjenning@...hat.com, ddstreet@...e.org,
        vitaly.wool@...sulko.com, mhocko@...nel.org,
        roman.gushchin@...ux.dev, shakeelb@...gle.com,
        muchun.song@...ux.dev, chrisl@...nel.org, linux-mm@...ck.org,
        kernel-team@...a.com, linux-kernel@...r.kernel.org,
        cgroups@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kselftest@...r.kernel.org, shuah@...nel.org
Subject: [PATCH v8 3/6] zswap: make shrinking memcg-aware (fix 2)

Drop the pool's reference at the end of the writeback step. Apply on
top of the first fixlet:

https://lore.kernel.org/linux-mm/20231130203522.GC543908@cmpxchg.org/T/#m6ba8efd2205486b1b333a29f5a890563b45c7a7e

Signed-off-by: Nhat Pham <nphamcs@...il.com>
---
 mm/zswap.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/zswap.c b/mm/zswap.c
index 7a84c1454988..56d4a8cc461d 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -859,6 +859,7 @@ static void shrink_worker(struct work_struct *w)
 resched:
 		cond_resched();
 	} while (!zswap_can_accept());
+	zswap_pool_put(pool);
 }
 
 static struct zswap_pool *zswap_pool_create(char *type, char *compressor)
-- 
2.34.1