diff options
| author | Kairui Song <kasong@tencent.com> | 2026-04-28 02:06:58 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-06-04 14:45:04 -0700 |
| commit | 6e9be217a3cecbd8e8a5beec2aeba4ae9ebd2af9 (patch) | |
| tree | 9f44f815a4f51436ae7b8479c18bf1844bca101b | |
| parent | 16b475d2ac3c7994370254644015ae2e5dd5210b (diff) | |
mm/mglru: use a smaller batch for reclaim
With a fixed number to reclaim calculated at the beginning, making each
following step smaller should reduce the lock contention and avoid
over-aggressive reclaim of folios, as it will abort earlier when the
number of folios to be reclaimed is reached.
Link: https://lore.kernel.org/20260428-mglru-reclaim-v7-7-02fabb92dc43@tencent.com
Signed-off-by: Kairui Song <kasong@tencent.com>
Reviewed-by: Axel Rasmussen <axelrasmussen@google.com>
Reviewed-by: Chen Ridong <chenridong@huaweicloud.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Barry Song <baohua@kernel.org>
Cc: Chris Li <chrisl@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: David Stevens <stevensd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kalesh Singh <kaleshsingh@google.com>
Cc: Leno Hou <lenohou@gmail.com>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vernon Yang <vernon2gm@gmail.com>
Cc: Wei Xu <weixugc@google.com>
Cc: Yafang <laoar.shao@gmail.com>
Cc: Yuanchu Xie <yuanchu@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | mm/vmscan.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 32ffbb557e15..6128b191b81d 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -5011,7 +5011,7 @@ static bool try_to_shrink_lruvec(struct lruvec *lruvec, struct scan_control *sc) break; } - nr_batch = min(nr_to_scan, MAX_LRU_BATCH); + nr_batch = min(nr_to_scan, MIN_LRU_BATCH); delta = evict_folios(nr_batch, lruvec, sc, swappiness); if (!delta) break; |