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From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Andrea Arcangeli <andrea@novell.com>
Cc: Rik van Riel <riel@redhat.com>, Andrew Morton <akpm@osdl.org>,
	linux-kernel@vger.kernel.org
Subject: Re: lowmem_reserve (replaces protection)
Date: Wed, 27 Oct 2004 12:05:19 +1000	[thread overview]
Message-ID: <417F025F.5080001@yahoo.com.au> (raw)
In-Reply-To: <20041027005425.GO14325@dualathlon.random>

Andrea Arcangeli wrote:

> the per-classzone kswapd treshold was very well taken care of in 2.4,
> thanks the watermarks embedding the low/min/high and the classzone being
> passed up to the kswapd wakeup function.
> 

Kswapd actually should take care of this properly: see the
initial loop before the real scanning loop.

I thought this was a bit subtle, but it seems to work fine,
and Andrew likes it.

I have a patch to explicitly have kswapd use the lower zone
protection watermarks but I haven't really demonstrated it is
better than what is currently there (other than being simpler).

  parent reply	other threads:[~2004-10-27  2:08 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-10-25 17:01 lowmem_reserve (replaces protection) Andrea Arcangeli
2004-10-26  1:48 ` Rik van Riel
2004-10-26  1:58   ` Andrea Arcangeli
2004-10-26  3:48     ` Nick Piggin
2004-10-26  4:04       ` Andrea Arcangeli
2004-10-26  4:17         ` Nick Piggin
2004-10-27  0:25           ` Andrea Arcangeli
2004-10-27  0:42             ` Andrew Morton
2004-10-27  0:48               ` Andrea Arcangeli
2004-10-27  2:06             ` Nick Piggin
2004-10-28  0:26             ` Andrea Arcangeli
2004-10-27  0:31           ` Rik van Riel
2004-10-27  0:54             ` Andrea Arcangeli
2004-10-27  0:56               ` Andrea Arcangeli
2004-10-27  1:35                 ` Andrea Arcangeli
2004-10-27  2:08                   ` Andrew Morton
2004-10-27  2:31                     ` Andrea Arcangeli
2004-10-27  2:56                   ` Nick Piggin
2004-10-27  1:00               ` Rik van Riel
2004-10-27  1:10                 ` Andrea Arcangeli
2004-10-27  2:05               ` Nick Piggin [this message]
2004-10-27  2:29                 ` Andrea Arcangeli
2004-10-27  3:01                   ` Nick Piggin
2004-10-27  3:23                     ` Andrea Arcangeli
2004-10-27  3:34                       ` Nick Piggin
2004-10-27  3:43                         ` Andrew Morton
2004-10-27  4:44                           ` Andrea Arcangeli
2004-10-27  4:51                             ` Rik van Riel
2004-10-27  5:05                               ` Andrea Arcangeli
2004-10-27  5:50                                 ` Nick Piggin
2004-10-27  5:33                             ` Andrew Morton
2004-10-27  6:11                               ` Andrea Arcangeli

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