Re: [PATCH] driver: ip27-rtc - convert ioctl to unlocked_ioctl

Cyrill Gorcunov
2008-01-14T16:29:20Z

[Jiri Slaby - Mon, Jan 14, 2008 at 05:27:00PM +0100]
> On 01/14/2008 05:07 PM, Cyrill Gorcunov wrote:
>> Yes, process would be stopped, and not *just* stopped but could spend
>> all his cpu time-slice in attempt to get spinlock (espec if set time is
>> much longer than read), but if we use mutex here the process could just
>> sleep instead of trying to get spinlock granted. Am I wrong? Or this is
>> not worth to do it?
>
> I would say no. It'll spin only for nanoseconds there.
>

Thanks a lot Jiri, I'll resend improved patch.

- Cyrill -