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From: Andrew Morton <akpm@zip.com.au>
To: Rik van Riel <riel@conectiva.com.br>
Cc: Linus Torvalds <torvalds@transmeta.com>,
	lkml <linux-kernel@vger.kernel.org>
Subject: Re: [patch 9/21] batched addition of pages to the LRU
Date: Sun, 11 Aug 2002 22:51:19 -0700	[thread overview]
Message-ID: <3D574CD7.DF054D05@zip.com.au> (raw)
In-Reply-To: <Pine.LNX.4.44L.0208120222420.23404-100000@imladris.surriel.com>

Rik van Riel wrote:
> 
> On Sun, 11 Aug 2002, Andrew Morton wrote:
> 
> > And it only takes one dirty block!  Any LRU page which is dirty
> > against a blocked queue is like a hand grenade floating
> > down a stream [1].  If some innocent task tries to write that
> > page it gets DoSed via the request queue.
> 
> This is exactly why we shouldn't wait on dirty pages in
> the pageout path.

It's not the wait-on-writeback which is the problem.  It's
the writeout.   Perhaps that's what you meant.

      reply	other threads:[~2002-08-12  5:37 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-08-11  7:39 Andrew Morton
2002-08-11 15:23 ` Rik van Riel
2002-08-12  5:16   ` Andrew Morton
2002-08-12  5:24     ` Rik van Riel
2002-08-12  5:51       ` Andrew Morton [this message]

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