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Re: [RFC PATCH 10/14] ring_buffer: Fix more races when terminating the producer in the benchmark

From Oleg Nesterov <oleg@redhat.com>
Newsgroups linux.kernel
Subject Re: [RFC PATCH 10/14] ring_buffer: Fix more races when terminating the producer in the benchmark
Date 2015-09-07 20:00 +0200
Message-ID <q68RX-4gy-5@gated-at.bofh.it> (permalink)
References <pRemC-3Qx-7@gated-at.bofh.it> <pRemE-3Qx-77@gated-at.bofh.it> <pTsOv-2PZ-27@gated-at.bofh.it> <q4VDs-6AD-7@gated-at.bofh.it>
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Sorry, I didn't read these emails, and I never looked at this code...
Can't understand what are you talking about but a minor nit anyway ;)

On 09/04, Petr Mladek wrote:
>
> +	__set_current_state(TASK_RUNNING);
>  	if (!kthread_should_stop())
>  		wait_to_die();

I bet this wait_to_die() can die, consumer/producer can simply exit.

Just you need get_task_struct() after kthread_create(), and put_task_struct()
after kthread_stop().

Oleg.

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Re: [RFC PATCH 10/14] ring_buffer: Fix more races when terminating  the producer in the benchmark Petr Mladek <pmladek@suse.com> - 2015-09-04 11:40 +0200
  Re: [RFC PATCH 10/14] ring_buffer: Fix more races when terminating  the producer in the benchmark Oleg Nesterov <oleg@redhat.com> - 2015-09-07 20:00 +0200

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