Creating each new cgroup allocates 4Kb for struct cgroup. This is the largest memory allocation in this scenario and is epecially important for small VMs with 1-2 CPUs. Accounting of this memory helps to avoid misuse inside memcg-limited containers. Signed-off-by: Vasily Averin <vvs@xxxxxxxxxx> --- kernel/cgroup/cgroup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index adb820e98f24..7595127c5b3a 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -5353,7 +5353,7 @@ static struct cgroup *cgroup_create(struct cgroup *parent, const char *name, /* allocate the cgroup and its ID, 0 is reserved for the root */ cgrp = kzalloc(struct_size(cgrp, ancestor_ids, (level + 1)), - GFP_KERNEL); + GFP_KERNEL_ACCOUNT); if (!cgrp) return ERR_PTR(-ENOMEM); -- 2.31.1
