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Date:   Wed, 16 Nov 2022 00:12:55 -0800
From:   Christoph Hellwig <hch@infradead.org>
To:     Jonathan Lemon <jonathan.lemon@gmail.com>
Cc:     io-uring@vger.kernel.org, kernel-team@meta.com
Subject: Re: [PATCH v1 05/15] io_uring: mark pages in ifq region with zctap
 information.
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On Mon, Nov 07, 2022 at 09:05:11PM -0800, Jonathan Lemon wrote:
> The network stack passes up pages, which must be mapped to
> zctap device buffers in order to get the reference count and
> other items.  Mark the page as private, and use the page_private
> field to record the lookup and ownership information.

Who coordinate ownership of page_private here?  What other parts
of the kernel could touch these pages?