netdev - Re: [PATCH net-next 4/4] net: add dedicated kmem

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Date:   Thu, 2 Feb 2023 21:11:05 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        eric.dumazet@...il.com, Alexander Duyck <alexanderduyck@...com>,
        Soheil Hassas Yeganeh <soheil@...gle.com>
Subject: Re: [PATCH net-next 4/4] net: add dedicated kmem_cache for
 typical/small skb->head

On Thu,  2 Feb 2023 18:58:01 +0000 Eric Dumazet wrote:
> +/* We want SKB_SMALL_HEAD_CACHE_SIZE to not be a power of two. */

Why is that?  Is it to prevent potential mixing up of objects from 
the cache with objects from general slabs (since we only do a
end_offset == SKB_SMALL_HEAD_HEADROOM check)?