Expand disk-part_tbl
int disk_expand_part_tbl(struct gendisk * disk, int partno);
disk
disk to expand part_tbl for
partno
expand such that this partno can fit in
Expand disk->part_tbl such that partno can fit in. disk->part_tbl uses RCU to allow unlocked dereferencing for stats and other stuff.
Matching bd_mutex locked, might sleep.
0 on success, -errno on failure.