FUJITA Tomonori wrote: > Hmm, does SCSI mid-layer need to care about how many bytes the block > layer allocates? I don't think that extra_len is NOT good_bytes. > > I think that the block layer had better take care about it (fix > __end_that_request_first?). Yeah, probably calling completion functions w/o bytes count is the right thing to do but what I was talking about was what could break when the semantics of rq->data_len changed. If we keep rq->data_len() == sum(sg), we keep it business as usual for all the rest except for the device application layer if we don't we do the reverse and SCSI midlayer completion was a good example, I think. Things going the other way is fine with me but I at least want to hear a valid rationale. Till now all I got is "because that's the true size" which doesn't really make much sense to me. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
