Re: [PATCH 01/45] writeback: reduce calls to global_page_state inbalance_dirty_pages()

[Jan Kara]

On Fri 09-10-09 17:18:32, Peter Zijlstra wrote:
> On Fri, 2009-10-09 at 17:12 +0200, Jan Kara wrote:
> >   Ugh, but this is not equivalent! We would block the writer on some BDI
> > without any dirty data if we are over global dirty limit. That didn't
> > happen before.
> 
> It should have, we should throttle everything calling
> balance_dirty_pages() when we're over the total limit.
  OK :) I agree it's reasonable. But Wu, please note this in the
changelog because it might be a substantial change for some loads.

								Honza
-- 
Jan Kara <jack@xxxxxxx>
SUSE Labs, CR
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