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Date:   Thu, 6 May 2021 21:08:50 +0000
From:   Al Viro <viro@zeniv.linux.org.uk>
To:     Jens Axboe <axboe@kernel.dk>
Cc:     Pavel Begunkov <asml.silence@gmail.com>,
        yangerkun <yangerkun@huawei.com>, linux-fsdevel@vger.kernel.org,
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Subject: Re: [PATCH] block: reexpand iov_iter after read/write
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On Thu, May 06, 2021 at 01:15:01PM -0600, Jens Axboe wrote:

> Attached output of perf annotate <func> for that last run.

Heh...  I wonder if keeping the value of iocb_flags(file) in
struct file itself would have a visible effect...