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.