The commit is pushed to "branch-rh8-4.18.0-240.1.1.vz8.5.x-ovz" and will appear
at https://src.openvz.org/scm/ovz/vzkernel.git
after rh8-4.18.0-240.1.1.vz8.5.18
------>
commit 2b164a669b9f4bb2e16fddd8b11217ceadd10d60
Author: Vasily Averin <v...@virtuozzo.com>
Date: Tue Apr 20 19:35:01 2021 +0300
memcg: Enable accounting for signals
User can send signals to another processes and force kernel to allocate
memory for 'struct sigqueue' objects. Number of signals is restricted by
RLIMIT_SIGPENDING per-task resource limit, though alive signals can
consume significant piece of memory.
It makes sense to account for these allocations to restrict the host's
memory consumption from inside the memcg-limited container.
Old virtuozzo versions accounted this memory, but it was lost during
vz7 rebase.
https://jira.sw.ru/browse/PSBM-128624
Signed-off-by: Vasily Averin <v...@virtuozzo.com>
---
kernel/signal.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/signal.c b/kernel/signal.c
index 171f7496f811..aa8025687930 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -4354,7 +4354,7 @@ void __init signals_init(void)
{
siginfo_buildtime_checks();
- sigqueue_cachep = KMEM_CACHE(sigqueue, SLAB_PANIC);
+ sigqueue_cachep = KMEM_CACHE(sigqueue, SLAB_PANIC | SLAB_ACCOUNT);
}
#ifdef CONFIG_KGDB_KDB
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