diff options
| author | Chengming Zhou <zhouchengming@bytedance.com> | 2024-02-04 03:06:01 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-02-22 10:24:54 -0800 |
| commit | b49547ade38a63ff39c9fbc53fb38622cb63854a (patch) | |
| tree | dda6b34e05378084c6d75a45245d48b21ad8fc50 /include/linux/list_lru.h | |
| parent | 0827a1fb143fae588cb6f5b9a97c405d6c2ddec9 (diff) | |
mm/zswap: stop lru list shrinking when encounter warm region
When the shrinker encounter an existing folio in swap cache, it means we
are shrinking into the warmer region. We should terminate shrinking if
we're in the dynamic shrinker context.
This patch add LRU_STOP to support this, to avoid overshrinking.
Link: https://lkml.kernel.org/r/20240201-b4-zswap-invalidate-entry-v2-3-99d4084260a0@bytedance.com
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Nhat Pham <nphamcs@gmail.com>
Reviewed-by: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/list_lru.h')
| -rw-r--r-- | include/linux/list_lru.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/list_lru.h b/include/linux/list_lru.h index f2882a820690..792b67ceb631 100644 --- a/include/linux/list_lru.h +++ b/include/linux/list_lru.h @@ -24,6 +24,8 @@ enum lru_status { LRU_SKIP, /* item cannot be locked, skip */ LRU_RETRY, /* item not freeable. May drop the lock internally, but has to return locked. */ + LRU_STOP, /* stop lru list walking. May drop the lock + internally, but has to return locked. */ }; struct list_lru_one { |