linux-kernel - Re: [PATCH net-next v3 3/5] page_pool: Allow drivers to hint on SKB recycling

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Message-ID: <YHDtQWyzFmrjuQWr@apalos.home>
Date:   Sat, 10 Apr 2021 03:11:45 +0300
From:   Ilias Apalodimas <ilias.apalodimas@...aro.org>
To:     Matteo Croce <mcroce@...ux.microsoft.com>
Cc:     netdev@...r.kernel.org, linux-mm@...ck.org,
        Ayush Sawal <ayush.sawal@...lsio.com>,
        Vinay Kumar Yadav <vinay.yadav@...lsio.com>,
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Subject: Re: [PATCH net-next v3 3/5] page_pool: Allow drivers to hint on SKB
 recycling

Hi Matteo, 

[...]
> +bool page_pool_return_skb_page(void *data);
> +
>  struct page_pool *page_pool_create(const struct page_pool_params *params);
>  
>  #ifdef CONFIG_PAGE_POOL
> @@ -243,4 +247,13 @@ static inline void page_pool_ring_unlock(struct page_pool *pool)
>  		spin_unlock_bh(&pool->ring.producer_lock);
>  }
>  
> +/* Store mem_info on struct page and use it while recycling skb frags */
> +static inline
> +void page_pool_store_mem_info(struct page *page, struct xdp_mem_info *mem)
> +{
> +	u32 *xmi = (u32 *)mem;
> +

I just noticed this changed from the original patchset I was carrying. 
On the original, I had a union containing a u32 member to explicitly avoid
this casting. Let's wait for comments on the rest of the series, but i'd like 
to change that back in a v4. Aplogies, I completely missed this on the
previous postings ...

Thanks
/Ilias