linux-kernel - Re: [uClinux-dev] Re: [PATCH] NOMMU: Pages allocated to a ramfs inode's pagecache may get wrongly discarded

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Message-ID: <20090312175557.GD14491@shareable.org>
Date:	Thu, 12 Mar 2009 17:55:57 +0000
From:	Jamie Lokier <jamie@...reable.org>
To:	uClinux development list <uclinux-dev@...inux.org>
Cc:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Lee Schermerhorn <lee.schermerhorn@...com>,
	Rik van Riel <riel@...riel.com>, peterz@...radead.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Minchan Kim <minchan.kim@...il.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	torvalds@...ux-foundation.org
Subject: Re: [uClinux-dev] Re: [PATCH] NOMMU: Pages allocated to a ramfs inode's pagecache may get wrongly discarded

Robin Getz wrote:
> > Currently, CONFIG_UNEVICTABLE_LRU can't use on nommu machine
> > because nobody of vmscan folk havbe nommu machine.
> > 
> > Yes, it is very stupid reason. _very_ welcome to tester! :)
> 
> As always - if you (or any kernel developer) would like a noMMU machine to 
> test on - please send me a private email.

Well, that explains why vmscan has historically performed a little
dubiously on small nommu machines!

By the way, this is just a random side thought... nommu kernels work
just fine in emulators :-)

-- Jamie
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