rbd: store data_type in img_req instead of obj_req

All object requests are associated with an image request now -- avoid
duplicating the same info in each object request.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Ilya Dryomov 2018-02-01 11:50:47 +01:00
commit ecc633caeb