linux-kernel - Re: [PATCH net-next v11 0/6] introduce page_pool

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Message-ID: <20231017081303.769e4fbe@kernel.org>
Date:   Tue, 17 Oct 2023 08:13:03 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Yunsheng Lin <linyunsheng@...wei.com>
Cc:     <davem@...emloft.net>, <pabeni@...hat.com>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>, <bpf@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        Alexander Duyck <alexander.duyck@...il.com>
Subject: Re: [PATCH net-next v11 0/6] introduce page_pool_alloc() related
 API

On Tue, 17 Oct 2023 15:56:48 +0800 Yunsheng Lin wrote:
> > And I can't figure out now what the "cache" in the name is referring to.
> > Looks like these are just convenience wrappers which return VA instead
> > of struct page..  
> 
> Yes, it is corresponding to some API like napi_alloc_frag() returning va
> instead of 'struct page' mentioned in patch 5.
> 
> Anyway, naming is hard, any suggestion for a better naming is always
> welcomed:)

I'd just throw a _va (for virtual address) at the end. And not really
mention it in the documentation. Plus the kdoc of the function should
say that this is just a thin wrapper around other page pool APIs, and
it's safe to mix it with other page pool APIs?