On Mon, Jan 2, 2017 at 10:40 AM, Arnd Bergmann <arnd@xxxxxxxx> wrote: > b) without MMC CMDQ support: > - report queue depth of '2' > - first request gets handled as above > - if one request is pending, prepare the second request and > add a pointer to the mmc host structure (not that different > from what we do today) > - when the host driver completes a request, have it immediately > issue the next one from the interrupt handler. In case we need > to sleep here, use a threaded IRQ, or a workqueue. This should > avoid the need for the NULL requests This part we can do already today with the old block layer and I think we (heh, I guess me) should do that as the first step. After this migrating to blk-mq becomes much easier. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
