Linux 6.0 compat: Check for migratepage VFS (#17217)
The 6.0 kernel removes the 'migratepage' VFS op. Check for
migratepage.
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Rob Norris <robn@despairlabs.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org