linux-kernel - Re: [PATCH v9 10/12] kthread: Allow to cancel kthread work

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Message-ID: <20160620202739.GB3262@mtj.duckdns.org>
Date:	Mon, 20 Jun 2016 16:27:39 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Petr Mladek <pmladek@...e.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Josh Triplett <josh@...htriplett.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jiri Kosina <jkosina@...e.cz>, Borislav Petkov <bp@...e.de>,
	Michal Hocko <mhocko@...e.cz>, linux-mm@...ck.org,
	Vlastimil Babka <vbabka@...e.cz>, linux-api@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v9 10/12] kthread: Allow to cancel kthread work

On Thu, Jun 16, 2016 at 01:17:29PM +0200, Petr Mladek wrote:
> +/*
> + * Returns true when the work could not be queued at the moment.
> + * It happens when it is already pending in a worker list
> + * or when it is being cancelled.
> + *
> + * This function must be called under work->worker->lock.

Replace the comment with a lockdep assertion?

> + */
> +static inline bool queuing_blocked(const struct kthread_work *work)
> +{
> +	return !list_empty(&work->node) || work->canceling;
> +}

Other than that,

Acked-by: Tejun Heo <tj@...nel.org>

Thanks.

-- 
tejun