linux-kernel - Re: [PATCH net-next v3 2/5] mm: add a signature in struct page

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Message-ID: <CANn89i+ASy7d+ew0BrnsB5aH8BPb+kr_pazWgfaAB9939o-cmQ@mail.gmail.com>
Date:   Wed, 14 Apr 2021 22:51:59 +0200
From:   Eric Dumazet <edumazet@...gle.com>
To:     Shakeel Butt <shakeelb@...gle.com>
Cc:     Jesper Dangaard Brouer <brouer@...hat.com>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        Matthew Wilcox <willy@...radead.org>,
        Matteo Croce <mcroce@...ux.microsoft.com>,
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        Andrew Lunn <andrew@...n.ch>, Paolo Abeni <pabeni@...hat.com>
Subject: Re: [PATCH net-next v3 2/5] mm: add a signature in struct page

On Wed, Apr 14, 2021 at 10:09 PM Shakeel Butt <shakeelb@...gle.com> wrote:

>
> I will let TCP RX zerocopy experts respond to this but from my high
> level code inspection, I didn't see page->private usage.

Indeed, we do not use page->private, since we do not own the page(s).