Re: [PATCH] lib/rhashtable: consider param->min_size when setting initial table size

From: Andrew Morton
Date: Tue Jul 17 2018 - 21:58:23 EST


On Tue, 17 Jul 2018 15:30:57 -0700 Davidlohr Bueso <dave@xxxxxxxxxxxx> wrote:

> On Mon, 16 Jul 2018, Herbert Xu wrote:
>
> >On Fri, Jul 13, 2018 at 11:25:16PM -0700, Davidlohr Bueso wrote:
> >> rhashtable_init() currently does not take into account the user-passed
> >> min_size parameter unless param->nelem_hint is set as well. As such,
> >> the default size (number of buckets) will always be HASH_DEFAULT_SIZE
> >> even if the smallest allowed size is larger than that. Remediate this
> >> by unconditionally calling into rounded_hashtable_size() and handling
> >> things accordingly.
> >>
> >> Signed-off-by: Davidlohr Bueso <dbueso@xxxxxxx>
> >
> >Acked-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
> >
> >Normally these patches go through netdev so could you please resend
> >it with my ack to netdev@xxxxxxxxxxxxxxx?
>
> So I've done the resend, but at least would think that routing the
> patch through Andrew would work best as he picked up the rhashtable
> changes regarding ipc and this touches the same call.
>

Either approach works.

Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>