Re: [mm][RFC][PATCH 0/11] mm accessor updates.

KAMEZAWA Hiroyuki
2009-12-16T10:34:18Z

On Wed, 16 Dec 2009 11:28:06 +0100
Andi Kleen <andi@firstfloor.org> wrote:

> > > Also the patches didn't fare too well in testing unfortunately.
> > >
> > > I suspect we'll rather need multiple locks split per address
> > > space range.
> >
> > This set doesn't include any changes of the logic. Just replace all mmap_sem.
> > I think this is good start point (for introducing another logic etc..)
>
> The problem is that for range locking simple wrapping the locks
> in macros is not enough. You need more changes.
>
maybe. but removing scatterred mmap_sem from codes is the first thing to do.
I think this removing itself will take 3 month or a half year.
(So, I didn't remove mmap_sem and leave it as it is.)

The problem of range locking is more than mmap_sem, anyway. I don't think
it's possible easily.

But ok, if no one welcome this, I stop this.

Thanks,
-Kame