lkml.org 
[lkml]   [2021]   [Oct]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] mm: skip current when memcg reclaim
Date
From: Zhaoyang Huang <zhaoyang.huang@unisoc.com>

Sibling thread of the same process could refault the reclaimed pages
in the same time, which would be typical in None global reclaim and
introduce thrashing.
---
mm/vmscan.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 5199b96..ebbdc37 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2841,6 +2841,11 @@ static void shrink_node_memcgs(pg_data_t *pgdat, struct scan_control *sc)
sc->memcg_low_skipped = 1;
continue;
}
+ /*
+ * Don't bother current when its memcg is below low
+ */
+ if (get_mem_cgroup_from_mm(current->mm) == memcg)
+ continue;
memcg_memory_event(memcg, MEMCG_LOW);
}

--
1.9.1
\
 
 \ /
  Last update: 2021-10-15 08:16    [W:0.110 / U:54.460 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site