[Unionfs] RT patch - again

[Paul Hewlett]

On Wednesday 28 November 2007 02:40:16 Erez Zadok wrote:
> In message <200711270926.23750.paul at gccs.co.za>, Paul Hewlett writes:
> > Erez
> >
> > What would solve this is if the CONFIG variables in the kernel are always
> > defined but to either 0 (disabled) or to 1 (enabled) and alas that is not
> > going to happen.
>
> Yes: we have three mutually-exclusive cases to distinguish:
>
> 1. RT patches not applied
> 2. RT patches applied and CONFIG_PREEMPT_RT=y
> 2. RT patches applied and CONFIG_PREEMPT_RT=n
>
> You can't distinguish among three cases with only one yes/no bit.  You need
> two bits at least.
>
> The easiest solution, honestly, is if the RT maintainers rename that
> .__nrpages field back to .nrpages -- then a simple ifdef will work for me.
> Do you think renaming the field back is something they'd agree to?

Erez

Don't know - I'm just trying out the RT kernel and am not a member of the RT 
dev group. The kernel sources are from the Gentoo pro-audio overlay but the 
original work is done by Ingo Molnar at RedHat

http://www.kernel.org/pub/linux/kernel/projects/rt/

Paul
>
> BTW, I understand why they did renamed it: to catch every person who uses
> that field w/o the wrapper.  Makes sense while developing code, as I use
> that trick too.  But after that, it's ok to rename the field back to its
> original name.
>
> If there's an RT ML you can point me to, I'll be happy to post this request
> to them.
>

> Thanks,
> Erez.



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