linux-kernel - Re: Change in default vm_dirty

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Message-Id: <1182444953.21117.161.camel@twins>
Date:	Thu, 21 Jun 2007 18:55:53 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Mark Lord <lkml@....ca>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, davej@...hat.com,
	tim.c.chen@...ux.intel.com, linux-kernel@...r.kernel.org,
	torvalds@...ux-foundation.org
Subject: Re: Change in default vm_dirty_ratio

On Thu, 2007-06-21 at 12:54 -0400, Mark Lord wrote:
> Andrew Morton wrote:
> >
> > What do we actually want the kernel to *do*?  Stated in terms of "when the
> > dirty memory state is A, do B" and "when userspace does C, the kernel should
> > do D".
> 
> When we have dirty pages awaiting write-out,
> and the write-out device is completely idle,
> then we should be writing them out.
> 
> That's the easy bit taken care of.  ;)

Unless we're in laptop mode, in that case we want to procrastinate.. :-)

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