linux-kernel - Re: [RFC][PATCH] mm: fix page

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Message-ID: <Pine.LNX.4.64.0703070959430.5963@woody.linux-foundation.org>
Date:	Wed, 7 Mar 2007 10:00:41 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
cc:	Nick Piggin <npiggin@...e.de>, Miklos Szeredi <miklos@...redi.hu>,
	akpm@...ux-foundation.org, mingo@...e.hu, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, benh@...nel.crashing.org,
	Jeff Dike <jdike@...toit.com>, hugh <hugh@...itas.com>
Subject: Re: [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas



On Wed, 7 Mar 2007, Peter Zijlstra wrote:
> 
> I'm not at all happy with this, but plain disallowing remap_file_pages on bdis
> without BDI_CAP_NO_WRITEBACK seems to offend some people, hence restrict it to
> root only.

I don't think that's a viable approach. Nonlinear mappings would normally 
be used by databases, and you don't want to limit databases to be run by 
root only.

		Linus
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