netdev - Re: [bpf-next V5 PATCH 11/15] page_pool: refurbish version of page

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Message-ID: <b8463e12-d1eb-d862-c5f4-09fc0ac33382@gmail.com>
Date:   Fri, 23 Mar 2018 06:29:55 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Jesper Dangaard Brouer <brouer@...hat.com>, netdev@...r.kernel.org,
        BjörnTöpel <bjorn.topel@...el.com>,
        magnus.karlsson@...el.com
Cc:     eugenia@...lanox.com, Jason Wang <jasowang@...hat.com>,
        John Fastabend <john.fastabend@...il.com>,
        Eran Ben Elisha <eranbe@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>, galp@...lanox.com,
        Daniel Borkmann <borkmann@...earbox.net>,
        Alexei Starovoitov <alexei.starovoitov@...il.com>,
        Tariq Toukan <tariqt@...lanox.com>
Subject: Re: [bpf-next V5 PATCH 11/15] page_pool: refurbish version of
 page_pool code



On 03/23/2018 05:18 AM, Jesper Dangaard Brouer wrote:

> +
> +void page_pool_destroy_rcu(struct page_pool *pool)
> +{
> +	call_rcu(&pool->rcu, __page_pool_destroy_rcu);
> +}
> +EXPORT_SYMBOL(page_pool_destroy_rcu);
> 


Why do we need to respect one rcu grace period before destroying a page pool ?

In any case, this should be called page_pool_destroy()