On Tue, Nov 01 2016, Christoph Hellwig wrote: > On Tue, Nov 01, 2016 at 11:00:19AM -0600, Jens Axboe wrote: > > #2 is a bit more problematic, I'm pondering how we can implement that on > > top of the bio approach. The nice thing about the request based approach > > is that we have a 1:1 mapping with the unit on the driver side. And we > > have a place to store the timer. I don't particularly love the embedded > > timer, however, it'd be great to implement that differently. Trying to > > think of options there, haven't found any yet. > > I have a couple ideas for that. Give me a few weeks and I'll send > patches. I'm not that patient :-) For the SYNC part, it should be easy enough to do by just using an on-stack hrtimer. I guess that will do for now, since we don't have poll support for async O_DIRECT right now anyway. http://git.kernel.dk/cgit/linux-block/commit/?h=for-4.10/dio&id=e96d9afd56791a61d463cb88f8f3b48393b71020 Untested, but should get the point across. I'll fire up a test box. -- Jens Axboe -- 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
