Re: [PATCH-rt 0/2] Fix up aio splats at reboot garbage collection

[Paul Gortmaker <paul.gortmaker@windriver.com>]

On 2015-02-20 12:39 PM, Benjamin LaHaise wrote:
> On Fri, Feb 20, 2015 at 12:31:17PM -0500, Paul Gortmaker wrote:
>> On 2015-02-18 08:33 AM, Mike Galbraith wrote:
>>> On Wed, 2015-02-18 at 12:28 +0100, Sebastian Andrzej Siewior wrote:
>>>> * Paul Gortmaker | 2015-02-15 15:52:37 [-0500]:
>>>>
>>>>> We ran into a splat during reboot that was caused by the percpu_ref_kill
>>>>> garbage collection in the fs/aio code.
>>>>
>>>> Could you please check if
>>>>      https://lkml.org/lkml/2015/2/16/391
>>>> works for you?
>>>
>>> I did not see a gripe with that and ltp.
>>
>> Same here ; set aside my two commits and applied the
>> sworkqueue implementation and the proposed aio patch
>> to the 3.14-rt tree and it doesn't splat on reboot.
>
> Sebastian, is this safe for non-RT kernels?  If so, could you please resend
> against mainline with a Signed-off-by so we can get this properly fixed?

The simple waitqueue and simple workqueue are -rt specific
additions; while we probably want to get those mainline
since they bring size optimizations, they aren't in there
yet, so we can't use this in mainline yet.

P.
--

>
> 		-ben
>
>> Thanks,
>> Paul.
>> --
>>
>>>
>>> 	-Mike
>>>
>