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

[KAMEZAWA Hiroyuki]

On Wed, 16 Dec 2009 11:49:51 +0100
Andi Kleen <andi@xxxxxxxxxxxxxx> wrote:

> On Wed, Dec 16, 2009 at 07:31:09PM +0900, KAMEZAWA Hiroyuki wrote:
> > On Wed, 16 Dec 2009 11:28:06 +0100
> > Andi Kleen <andi@xxxxxxxxxxxxxx> 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.)
> 
> I suspect you would just need to change them again then.
> 
Do you have alternative recommendation rather than wrapping all accesses by
special functions ?

Thanks,
-Kame

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/