linux-kernel - Re: [PATCH 0/2] don't use pid for request cancellation

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Message-ID: <9b90fd1d-c60d-523a-b6b5-6c960ae52cc6@kernel.dk>
Date:   Mon, 15 Jun 2020 09:04:56 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Pavel Begunkov <asml.silence@...il.com>, io-uring@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     ebiederm@...ssion.com
Subject: Re: [PATCH 0/2] don't use pid for request cancellation

On 6/15/20 1:33 AM, Pavel Begunkov wrote:
> Cancel requests of an extiting task based on ->task address. As
> reported by Eric W. Biederman, using pid for this purpose is not
> right.
> 
> note: rebased on top of "cancel all" patches

Looks good, and I had the same thought of not grabbing a ref to the
task for the cancel case where we don't need to dereference it.

-- 
Jens Axboe