Refactor all the low-level helpers to take the first_to_check cursor as
parameter, rather than accessing it directly.
Signed-off-by: NJulian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: NJens Remus <jremus@linux.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>