Re: [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas

[Peter Zijlstra]

On Wed, 2007-03-07 at 10:00 -0800, Linus Torvalds wrote:
> 
> 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.

It was claimed that they use it on tmpfs only, not on a 'real'
filesystem.

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