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