Re: [RFC 07/23] filemap: align the index to mapping_min_order in __filemap_add_folio()

[Matthew Wilcox]

On Fri, Sep 15, 2023 at 08:38:32PM +0200, Pankaj Raghav wrote:
> From: Luis Chamberlain <mcgrof@xxxxxxxxxx>
> 
> Align the index to the mapping_min_order number of pages while setting
> the XA_STATE and xas_set_order().

Not sure why this one's necessary either.  The index should already be
aligned to folio_order.

Some bits of it are clearly needed, like checking that folio_order() >=
min_order.