On 06/15/2017 09:59 AM, Goldwyn Rodrigues wrote: > From: Goldwyn Rodrigues <rgoldwyn@xxxxxxxx> > > A new bio operation flag REQ_NOWAIT is introduced to identify bio's > orignating from iocb with IOCB_NOWAIT. This flag indicates > to return immediately if a request cannot be made instead > of retrying. > > Stacked devices such as md (the ones with make_request_fn hooks) > currently are not supported because it may block for housekeeping. > For example, an md can have a part of the device suspended. > For this reason, only request based devices are supported. > In the future, this feature will be expanded to stacked devices > by teaching them how to handle the REQ_NOWAIT flags. Looks fine to me now. I don't know what tree will take these patches, but if it's not block, then you can add: Reviewed-by: Jens Axboe <axboe@xxxxxxxxx> -- Jens Axboe
