Re: remap_file_pages() use

From: Kirill A. Shutemov
Date: Mon May 19 2014 - 11:18:39 EST


Christoph Hellwig wrote:
> On Mon, May 19, 2014 at 06:02:38PM +0300, Kirill A. Shutemov wrote:
> > > Stop right there. We found out about two real life users of
> > > remap_file_pages() already, without even committing the patches to warn
> > > about using it to any tree.
> >
> > Who is the second here? Oracle?
>
> PyPy.
>
> Oracle would be the third, although use of the feature is optional and
> fairly hard to opt in to, so I didn't count it.

IIUC PyPy uses the syscall in some early prototype and looks like guys are
okay to rework it to mmap() if default sysctl_max_map_count will be high
enough.

--
Kirill A. Shutemov
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