I am putting in a partition wall that runs parallel to floor joists below and rafters above. The floor joists and rafters are offset by about 7” and I’m going to build the wall under the rafters. This will put the wall between the floor joists below. I read elsewhere that the floor sheathing should be enough to support a non-load bearing wall like this without blocking the floor joists. I’m new to framing, so should I be concerned?