Question about ll_rw_blk.c, add_request()

Bernd Schmidt (crux@pool.informatik.rwth-aachen.de)
Tue, 16 Apr 1996 13:05:19 +0200 (MESZ)

Just one short question to make sure I understand the code:
In add_request(), new requests for the hardware are put in a queue. I think
that there are not supposed to be several requests for the same sector in the
queue at the same time, e.g. one reading the sector and one writing it. I think
that the buffer and page caches try to avoid this situation. Is this correct?