> > + if (nr_segments == 1 && (iod->flags & IOD_SINGLE_SEGMENT)) { > > nvme_pci_setup_prps() calls nvme_try_setup_prp_simple() which sets > IOD_SINGLE_SEGMENT if and only if the req has a single phys segment. So why do > you need to count the segments again here ? Looking at the flag only should be > enough, no ? Yes, the flag will be enough. I started with nr_segments first, but felt the need of a flag when I reached to handle the unmap part. This can be changed if the series requires an iteration. Or I can do this as part of the cleanup which I anyway need to do to replace the "iod->aborted" field with a flag. -- Kanchan