On 5/22/18 3:02 PM, Christoph Hellwig wrote: > On Tue, May 22, 2018 at 02:29:21PM -0600, Jens Axboe wrote: >>> of BLK_EH_HANDLED. Is the driver supposed to return BLK_EH_NOT_HANDLED >>> when the driver actually knows the request has been completed before >>> returning the status? >> >> If the driver knows it's completed, it'd have to return BLK_EH_NOT_HANDLED. >> Or BLK_EH_HANDLED would work too, since the above state transition would >> then fail. > > Btw, I think we should just kill off BLK_EH_HANDLED. WIP totally > untested progress toward that is here: > > http://git.infradead.org/users/hch/block.git/shortlog/refs/heads/blk-eh-ret > > The only real missing bit is SCSI overloading the value for internal > use. I think that's a great idea, the use cases aren't clear at all, driver writers will get this wrong. -- Jens Axboe
