linux-kernel - Re: kernfs/rtc: circular dependency between kernfs and ops

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Date:	Tue, 25 Mar 2014 20:19:16 -0400
From:	Sasha Levin <sasha.levin@...cle.com>
To:	Alessandro Zummo <a.zummo@...ertech.it>
CC:	Tejun Heo <tj@...nel.org>, Greg KH <greg@...ah.com>,
	rtc-linux@...glegroups.com, LKML <linux-kernel@...r.kernel.org>
Subject: Re: kernfs/rtc: circular dependency between kernfs and ops_lock

On 03/25/2014 06:39 PM, Alessandro Zummo wrote:
> On Tue, 25 Mar 2014 17:52:30 -0400
> Sasha Levin <sasha.levin@...cle.com> wrote:
>
>>>
>>>    Pretty interesting indeed. One option would be to remove
>>>    the sys files before acquiring the lock. But I wonder
>>>    if this could lead to other issues.
>>>
>>
>> Ping? Seems this thing got lost.
>
>   What if we move
>
>     rtc_sysfs_del_device(rtc);
>
>   before acquiring the lock?

Trying it now, I'll leave it going for a week and see if it reproduces.


Thanks,
Sasha

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