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.
