On Tue, Mar 09, 2021 at 01:16:13PM -0800, Shakeel Butt wrote:
> On Tue, Mar 9, 2021 at 12:04 AM Vasily Averin <vvs@xxxxxxxxxxxxx> wrote:
> >
> > Objects can be created from memcg-limited tasks
> > but its misuse may lead to host OOM.
> >
> > Signed-off-by: Vasily Averin <vvs@xxxxxxxxxxxxx>
> > ---
> > net/ipv6/ip6_fib.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
> > index ef9d022..fa92ed1 100644
> > --- a/net/ipv6/ip6_fib.c
> > +++ b/net/ipv6/ip6_fib.c
> > @@ -2445,7 +2445,7 @@ int __init fib6_init(void)
> >
> > fib6_node_kmem = kmem_cache_create("fib6_nodes",
>
> Can you talk a bit more about the lifetime of the object created from
> this kmem cache? Also who and what operation can trigger allocation?
The lifetime is less of a concern since we have a slab reparenting mechanism,
unless it's a very short-living object.
