On Thu, Nov 12, 2020 at 09:26:26PM +0000, Matthew Wilcox (Oracle) wrote: > Pagecache tags are used for dirty page writeback. Since dirtiness is > tracked on a per-THP basis, we only want to return the head page rather > than each subpage of a tagged page. All the filesystems which use huge > pages today are in-memory, so there are no tagged huge pages today. > > Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx> > Reviewed-by: Jan Kara <jack@xxxxxxx> > Reviewed-by: William Kucharski <william.kucharski@xxxxxxxxxx> Looks good, Reviewed-by: Christoph Hellwig <hch@xxxxxx>
