Re: [Lsf] IO less throttling and cgroup aware writeback (Was: Re: Preliminary Agenda and Activities for LSF)

Dave Chinner
2011-04-08T01:58:47Z

On Wed, Apr 06, 2011 at 07:10:17PM +0200, Jan Kara wrote:
> On Wed 06-04-11 12:08:05, Vivek Goyal wrote:
> > On Wed, Apr 06, 2011 at 11:37:15AM -0400, Vivek Goyal wrote:
> Well, I wouldn't bother too much with kswapd handling. MM people plan to
> get rid of writeback from direct reclaim and just remove the dirty page
> from LRU and recycle it once flusher thread writes it...

kswapd is not in the direct reclaim path - it's the background
memory reclaim path. Writeback from direct reclaim is a problem
because of stack usage, and that problem doesn't exist for kswapd.

Cheers,

Dave.
--
Dave Chinner
david@fromorbit.com