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mm/zswap: add LRU_STOP to comment about dropping the lru lock

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This function has been able to return LRU_STOP since commit b49547ade3
("mm/zswap: stop lru list shrinking when encounter warm region").  To
reduce confusion, update the comment to also list LRU_STOP as an option.

Link: https://lkml.kernel.org/r/20241127-lru-stop-comment-v1-1-f54a7cba9429@google.com
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Chengming Zhou <chengming.zhou@linux.dev>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Alice Ryhl 2024-11-27 13:53:29 +00:00 committed by Andrew Morton
parent 580ef4353c
commit feb06fb9af
1 changed files with 1 additions and 1 deletions
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mm/zswap.c
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@ -1156,7 +1156,7 @@ static enum lru_status shrink_memcg_cb(struct list_head *item, struct list_lru_o
/*
* It's safe to drop the lock here because we return either
* LRU_REMOVED_RETRY or LRU_RETRY.
* LRU_REMOVED_RETRY, LRU_RETRY or LRU_STOP.
*/
spin_unlock(&l->lock);