On St 26-04-06 08:30:51, Nigel Cunningham wrote:
> HI.
>
> On Wednesday 26 April 2006 08:25, Pavel Machek wrote:
> > Hi!
> >
> > > > It does apply to all of the LRU pages. This is what I've been doing for
> > > > years now. The only corner case I've come across is XFS. It still wants
> > > > to write data even when there's nothing to do and it's threads are
> > > > frozen (IIRC - haven't looked at it for a while). I got around that by
> > > > freezing bdevs when freezing processes.
> > >
> > > This means if we freeze bdevs, we'll be able to save all of the LRU
> > > pages, except for the pages mapped by the current task, without copying.
> > > I think we can try to do this, but we'll need a patch to freeze bdevs for
> > > this purpose. ;-)
> >
> > ...adding more dependencies to how vm/blockdevs work. I'd say current
> > code is complex enough...
>
> You assume too much. This is just using existing code.
Let's see the patch, then.
Pavel
--
Thanks for all the (sleeping) penguins.
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