This patches changes the SCSI layer to always provide block layer tags, and always make them host wide by default. We've been doing this for the blk-mq path since blk-mq was introduces and this catches up in the old I/O path so that drivers get a coherent execution environment.
Since V1 a few more drivers are using block tags and have been updated, and a spinlock for a single assignment has been changed from the previously used spinlock to a barrier by explicit request from James. I refuse any responsibility for mental or physical harm caused by that barrier. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
