tree 443ef957c07dd59b979057be737f733e5142b2d3
parent 183f7802e73e26206558864d1b67e64382257277
author Mike Snitzer <snitzer@redhat.com> 1430167070 -0400
committer Mike Snitzer <snitzer@redhat.com> 1432923537 -0400

dm: do not allocate any mempools for blk-mq request-based DM

Do not allocate the io_pool mempool for blk-mq request-based DM
(DM_TYPE_MQ_REQUEST_BASED) in dm_alloc_rq_mempools().

Also refine __bind_mempools() to have more precise awareness of which
mempools each type of DM device uses -- avoids mempool churn when
reloading DM tables (particularly for DM_TYPE_REQUEST_BASED).

Signed-off-by: Mike Snitzer <snitzer@redhat.com>