[PATCH] maple_tree: export symbol mas_preallocate()

[Matthew Wilcox]

On Wed, Mar 08, 2023 at 04:29:13PM +0100, Christoph Hellwig wrote:
> On Wed, Mar 08, 2023 at 04:18:55PM +0100, Danilo Krummrich wrote:
> > Consistency wise I think we should either also export mas_preallocate() or 
> > don't export the other ones either.
> 
> Please send a patch to drop all unused exports.

While that's usually a good rule, it just creates unnecessary friction
in this kind of case -- a set of library functions which have only been
introduced in the last few months.  If they're still unused in a year,
sure, let's get rid of the exports.