821979f5 Sun Nov 28 18:18:27 CST 2021 Matthew Wilcox (Oracle) <willy@infradead.org> iov_iter: Convert iter_xarray to use folios
Take advantage of how kmap_local_folio() works to simplify the loop.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: William Kucharski <william.kucharski@oracle.com>