Mailinglist Archive: opensuse-kernel (95 mails)

[Jan Kara <jack@xxxxxxx>]

On Tue 10-05-11 14:27:43, Michal Hocko wrote:
> On Tue 10-05-11 10:40:37, Mel Gorman wrote:
> [...]
> > > > - - patches.suse/files-slab-rcu.patch
> > >
> > > Nick's VFS black magic. The patch is not applied in openSUSE-11.4.
> > > Sorry, I cannot say anything about this patch.
> >
> > Drop it unless there is a known specific use case it helps. There is
> > now a whole host of other VFS black magic merged to mainline and it
> > improves open/close performance in other ways. Slab-destroy-by-rcu
> > means there is a variable amount of time spent freeing slab
> > objects. Many users probably don't care, but realtime people have
> > complained about variable latency when freeing slab objects before
> > and this is the kind of thing that can surprise them.
>
> Jack should have pinged Nick about this one so I would rather wait for
> what he comes with.
  Yes, I've pinged him but he didn't reply so far. So I'd just drop the
patch. If Nick wants to pursue this further, he has the patch in his
mailbox. And if he doesn't, we don't have a real need to do so...

                                                                Honza

-- 
Jan Kara <jack@xxxxxxx>
SUSE Labs, CR
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