From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Lameter <clameter@sgi.com>
Subject: Re: [00/41] Large Blocksize Support V7 (adds memmap support)
Date: Mon, 17 Sep 2007 15:00:42 -0700 (PDT)
Message-ID: <Pine.LNX.4.64.0709171458541.29993@schroedinger.engr.sgi.com>
References: <20070911060349.993975297@sgi.com> <87ir6c3z2l.fsf@informatik.uni-tuebingen.de>
 <20070916181313.GA16406@skynet.ie> <200709161903.37295.nickpiggin@yahoo.com.au>
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Cc: Mel Gorman <mel@skynet.ie>,
	Goswin von Brederlow <brederlo@informatik.uni-tuebingen.de>,
	Andrew Morton <akpm@linux-foundation.org>,
	Joern Engel <joern@logfs.org>, andrea@suse.de,
	torvalds@linux-foundation.org, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
	William Lee Irwin III <wli@holomorphy.com>,
	David Chinner <dgc@sgi.com>,
	Jens Axboe <jens.axboe@oracle.com>,
	Badari Pulavarty <pbadari@gmail.com>,
	Maxim Levitsky <maximlevitsky@gmail.com>,
	Fengguang Wu <fengguang.wu@gmail.com>,
	swin wang <wangswin@gmail.com>, totty.lu@gmail.com,
	hugh@veritas.com
To: Nick Piggin <nickpiggin@yahoo.com.au>
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On Sun, 16 Sep 2007, Nick Piggin wrote:

> I don't know how it would prevent fragmentation from building up
> anyway. It's commonly the case that potentially unmovable objects
> are allowed to fill up all of ram (dentries, inodes, etc).

Not in 2.6.23 with ZONE_MOVABLE. Unmovable objects are not allocated from 
ZONE_MOVABLE and thus the memory that can be allocated for them is 
limited.