linux-kernel - Re: [PATCH 5.9] io_uring: fix NULL-mm for linked reqs

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Message-ID: <41f3f2db-bc1c-22cc-d93c-4ed31cfb225f@kernel.dk>
Date:   Thu, 25 Jun 2020 07:24:21 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Pavel Begunkov <asml.silence@...il.com>, io-uring@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5.9] io_uring: fix NULL-mm for linked reqs

On 6/25/20 3:38 AM, Pavel Begunkov wrote:
> __io_queue_sqe() tries to handle all request of a link,
> so it's not enough to grab mm in io_sq_thread_acquire_mm()
> based just on the head.
> 
> Don't check req->needs_mm and do it always.

Applied, thanks.

-- 
Jens Axboe