Re: nonblocking-vm.patch

[Andrew Morton <akpm@zip.com.au>]

Rik van Riel wrote:
> 
> On Wed, 4 Sep 2002, Andrew Morton wrote:
> 
> > > get cleaned.  We can do this by simply refusing to
> > > scan that zone again for a number of jiffies, say
> > > 1/4 of a second.
> >
> > Well, it may be better to terminate that sleep earlier if IO
> > completes.
> 
> But only if enough IO completes. Otherwise we'll just end
> up doing too much scanning for no gain again.
> 

Well we want to _find_ the just-completed IO, yes?  Which implies
parking it onto the cold end of the inactive list at interrupt
time, or a separate list or something.

But let's look at the instrumentation and the profiles first.  I
expect it'll be OK.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/