dm_io_region 81 include/linux/dm-io.h struct dm_io_region *region, unsigned long *sync_error_bits); dm_io_region 64 include/linux/dm-kcopyd.h int dm_kcopyd_copy(struct dm_kcopyd_client *kc, struct dm_io_region *from, dm_io_region 65 include/linux/dm-kcopyd.h unsigned num_dests, struct dm_io_region *dests, dm_io_region 84 include/linux/dm-kcopyd.h unsigned num_dests, struct dm_io_region *dests,