On 01/23/2017 04:29 PM, Christoph Hellwig wrote: > DM already calls blk_mq_alloc_request on the request_queue of the > underlying device if it is a blk-mq device. But now that we allow drivers > to allocate additional data and initialize it ahead of time we need to do > the same for all drivers. Doing so and using the new cmd_size > infrastructure in the block layer greatly simplifies the dm-rq and mpath > code, and should also make arbitrary combinations of SQ and MQ devices > with SQ or MQ device mapper tables easily possible as a further step. > > Signed-off-by: Christoph Hellwig <hch@xxxxxx> > --- > drivers/md/dm-core.h | 1 - > drivers/md/dm-mpath.c | 132 ++++------------------ > drivers/md/dm-rq.c | 251 ++++++++++-------------------------------- > drivers/md/dm-rq.h | 2 +- > drivers/md/dm-target.c | 7 -- > drivers/md/dm.c | 18 +-- > drivers/md/dm.h | 3 +- > include/linux/device-mapper.h | 3 - > 8 files changed, 81 insertions(+), 336 deletions(-) > Reviewed-by: Hannes Reinecke <hare@xxxxxxxx> Cheers, Hannes -- Dr. Hannes Reinecke Teamlead Storage & Networking hare@xxxxxxx +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (AG Nürnberg) -- 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
