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Subject: Re: [bpf-next V5 PATCH 11/15] page_pool: refurbish version of
 page_pool code
To: Jesper Dangaard Brouer <brouer@redhat.com>, netdev@vger.kernel.org,
        =?UTF-8?B?QmrDtnJuVMO2cGVs?= <bjorn.topel@intel.com>,
        magnus.karlsson@intel.com
Cc: eugenia@mellanox.com, Jason Wang <jasowang@redhat.com>,
        John Fastabend <john.fastabend@gmail.com>,
        Eran Ben Elisha <eranbe@mellanox.com>,
        Saeed Mahameed <saeedm@mellanox.com>, galp@mellanox.com,
        Daniel Borkmann <borkmann@iogearbox.net>,
        Alexei Starovoitov <alexei.starovoitov@gmail.com>,
        Tariq Toukan <tariqt@mellanox.com>
References: <152180742196.20167.5168801400337773178.stgit@firesoul>
 <152180753479.20167.856688163861554435.stgit@firesoul>
From: Eric Dumazet <eric.dumazet@gmail.com>
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Date: Fri, 23 Mar 2018 06:29:55 -0700
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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()