"kwan.huen" <kwan.h...@samsung.com> writes: > --- > drivers/block/nvme-core.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c > index 85b8036..332341a 100644 > --- a/drivers/block/nvme-core.c > +++ b/drivers/block/nvme-core.c > @@ -769,6 +769,9 @@ static int nvme_submit_iod(struct nvme_queue *nvmeq, > struct nvme_iod *iod, > if (req->cmd_flags & REQ_RAHEAD) > dsmgmt |= NVME_RW_DSM_FREQ_PREFETCH; > > + if (rq_data_dir(req)) > + dsmgmt |= bio_get_streamid(req->bio) << 8; > +
There's no public specification for this, yet. How many bits are set aside for the stream id? Do you need to do bounds checking/input validation? What happens on adapters with older firmware when these bits are set? Cheers, Jeff -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/