linux-kernel - Re: [patch] mm: tiny-shmem fix lor, mmap_sem vs i

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Message-Id: <1222283477.4425.55.camel@calx>
Date:	Wed, 24 Sep 2008 14:11:17 -0500
From:	Matt Mackall <mpm@...enic.com>
To:	David Howells <dhowells@...hat.com>
Cc:	Nick Piggin <npiggin@...e.de>, Hugh Dickins <hugh@...itas.com>,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	a.p.zijlstra@...llo.nl, linux-kernel@...r.kernel.org,
	Dave Hansen <haveblue@...ibm.com>
Subject: Re: [patch] mm: tiny-shmem fix lor, mmap_sem vs i_mutex


On Wed, 2008-09-24 at 19:56 +0100, David Howells wrote:
> Matt Mackall <mpm@...enic.com> wrote:
> 
> > Is there any reason I shouldn't use truncate() in regular shmem.c if I
> > were to unify the two files?
> 
> It would be nice to keep tiny-shmem.c, well, tiny for NOMMU systems that can't
> have swap and can't have virtual memory.  Note that regular shmem does not now
> build on top of ramfs, so you'd have to port the ramfs internals to it.

As the original author of tiny-shmem.c, I will naturally try to bear
this in mind. The goal would be to build both a regular and a tiny
version from one C file so that they won't diverge again in the future.

-- 
Mathematics is the supreme nostalgia of our time.

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