Re: [RFC 08/23] filemap: align the index to mapping_min_order in filemap_get_folios_tag()

[Luis Chamberlain]

On Fri, Sep 15, 2023 at 08:50:59PM +0100, Matthew Wilcox wrote:
> On Fri, Sep 15, 2023 at 08:38:33PM +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 in filemap_get_folios_tag().
> 
> ... because?  It should already search backwards in the page cache,
> otherwise calling sync_file_range() would skip the start if it landed
> in a tail page of a folio.

Thanks! Will drop and verify!

  Luis