diff options
| author | Kemeng Shi <shikemeng@huaweicloud.com> | 2025-02-24 19:39:10 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-03-05 21:36:15 -0800 |
| commit | 51f271c1940fc9a5f77931ec603b457ea293bd56 (patch) | |
| tree | ac46f6e60e59c5cea0dfef1f1817dd79251d4b20 /mm | |
| parent | 47b16d0462a460000b8f05dfb1292377ac48f3ca (diff) | |
mm: swap: add back full cluster when no entry is reclaimed
If no swap cache is reclaimed, cluster taken off from full_clusters list
will not be put in any list and we can't reclaime HAS_CACHE slots
efficiently. Do relocate_cluster for such cluster to avoid inefficiency.
Link: https://lkml.kernel.org/r/20250224113910.522439-1-shikemeng@huaweicloud.com
Fixes: 3b644773eefd ("mm, swap: reduce contention on device lock")
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Reviewed-by: Kairui Song <kasong@tencent.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/swapfile.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c index fab99d67026a..a6c41c7ffb03 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -858,6 +858,10 @@ static void swap_reclaim_full_clusters(struct swap_info_struct *si, bool force) offset++; } + /* in case no swap cache is reclaimed */ + if (ci->flags == CLUSTER_FLAG_NONE) + relocate_cluster(si, ci); + unlock_cluster(ci); if (to_scan <= 0) break; |