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