lkml.org 
[lkml]   [2009]   [Sep]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 03/10] writeback: stop background writeback when below background threshold
From
Date
On Thu, 2009-09-24 at 18:13 +0200, Jens Axboe wrote:

> > > > for (;;) {
> > > > /*
> > > > + * Stop writeback when nr_pages has been consumed
> > > > */
> > > > + if (args->nr_pages <= 0)
> > > > break;
> > > >
> > > > /*
> > > > + * For background writeout, stop when we are below the
> > > > + * background dirty threshold
> > > > */
> > > > + if (args->for_background && !over_bground_thresh())
> > > > break;
> > >
> > >
> > > What I'm not getting is why this is conditional on for_background(),
> > > shouldn't we always stop writeback when below the background threshold?
> >
> > Ah, that would be for things like sync, which need to write out
> > everything, right?
>
> Yes, wb_writeback() handles any kind of writeback. The definition of our
> background writeout is to stop when we are no longer over the background
> writeout threshold.

Right, ok

Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>



\
 
 \ /
  Last update: 2009-09-24 18:29    [W:0.067 / U:0.932 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site