linux-kernel - Re: [PATCH] shmem: unify regular and tiny shmem

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Date:	Fri, 05 Dec 2008 12:15:36 -0600
From:	Matt Mackall <mpm@...enic.com>
To:	Hugh Dickins <hugh@...itas.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] shmem: unify regular and tiny shmem

On Fri, 2008-12-05 at 13:18 +0000, Hugh Dickins wrote:
> I agree with where you're going (surrendering your empire to mine!
> or perhaps you don't you see it quite that way?), but I think this
> isn't quite the patch you meant to send: it shouldn't contain that
> 
> > -			&shmem_file_operations);
> > +		  &shmem_file_operations);
> > +
> > +#ifndef CONFIG_MMU
> > +	error = ramfs_nommu_expand_for_mapping(inode, size);
> > +	if (error)
> > +		goto close_file;
> > +#endif
> 
> hunk in mm/shmem.c

I'm staring at the source and I'm at a loss as to why not? SHMEM depends
on MMU, so this only gets done when !SHMEM && !MMU, which makes it the
same as the tiny-shmem.c code it's unifying, no?

> and it should be deleting mm/tiny-shmem.c?

Not sure how that bit fell off, yes.

-- 
Mathematics is the supreme nostalgia of our time.

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