Re: [2.6.37-rc1] sys_ioprio_set and RCU locking...

Jens Axboe
2010-11-09T20:35:22Z

On 2010-11-08 14:55, Jens Axboe wrote:
>>>>> Take the RCU lock for read across acquiring the pointer to the task
>>>>> credentials and dereferencing it.
>>>>
>>>> Jens, does this look sane?
>>>
>>> Yes, looks clean enough to me.
>>
>> Very good! Are you willing to take the patch in your tree?
>
> Certainly, I'm in the middle of patch monkeying now anyway. Will queue
> it up.

The patch was buggy, I discovered that it does not do the proper
RCU unlock if we fail the uid match. Merged version here:

http://git.kernel.dk/?p=linux-2.6-block.git;a=commit;h=1a882abdbf9579ad0e5655f928e4ede30db301e6

--
Jens Axboe