linux-kernel - Re: [PATCH] w1: w1_process() is not freezable kthread

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Message-ID: <alpine.LNX.2.00.1510281425310.8998@pobox.suse.cz>
Date:	Wed, 28 Oct 2015 14:26:56 +0900 (KST)
From:	Jiri Kosina <jikos@...nel.org>
To:	Evgeniy Polyakov <zbr@...emap.net>
cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	GregKH <greg@...ah.com>
Subject: Re: [PATCH] w1: w1_process() is not freezable kthread

On Tue, 27 Oct 2015, Evgeniy Polyakov wrote:

> > w1_process() calls try_to_freeze(), but the thread doesn't mark itself
> > freezable through set_freezable(), so the try_to_freeze() call is useless.
> 
> I believe it is better to mark it freezable, what do you think? Its task 
> is useless if anyone else goes sleeping, it should freeze too.

I fail to see why this kthread should be freezable at all. There is no way 
for w1 device to generate new I/O requests that should be written out to 
filesystem, is it?

Thanks,

-- 
Jiri Kosina
SUSE Labs

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