15 Sep, 2016

1 commit

• e0c107526   dm rq: introduce dm_mq_kick_requeue_list() ... Browse Code »

  Make it possible for a request-based target to kick the DM device's
  blk-mq request_queue's requeue_list.

  Signed-off-by: Mike Snitzer
  Reviewed-by: Hannes Reinecke

  Mike Snitzer

  2016-09-15 23:16:05 +0800  

11 Jun, 2016

2 commits

• e83068a5f   dm mpath: add optional "queue_mode" feature ... Browse Code »

  Allow a user to specify an optional feature 'queue_mode ' where
  may be "bio", "rq" or "mq" -- which corresponds to bio-based,
  request_fn rq-based, and blk-mq rq-based respectively.

  If the queue_mode feature isn't specified the default for the
  "multipath" target is still "rq" but if dm_mod.use_blk_mq is set to Y
  it'll default to mode "mq".

  This new queue_mode feature introduces the ability for each multipath
  device to have its own queue_mode (whereas before this feature all
  multipath devices effectively had to have the same queue_mode).

  This commit also goes a long way to eliminate the awkward (ab)use of
  DM_TYPE_*, the associated filter_md_type() and other relatively fragile
  and difficult to maintain code.

  Signed-off-by: Mike Snitzer

  Mike Snitzer

  2016-06-11 03:16:02 +0800  
• 4cc96131a   dm: move request-based code out to dm-rq.[hc] ... Browse Code »

  Add some seperation between bio-based and request-based DM core code.

  'struct mapped_device' and other DM core only structures and functions
  have been moved to dm-core.h and all relevant DM core .c files have been
  updated to include dm-core.h rather than dm.h

  DM targets should _never_ include dm-core.h!

  [block core merge conflict resolution from Stephen Rothwell]
  Signed-off-by: Mike Snitzer
  Signed-off-by: Stephen Rothwell

  Mike Snitzer

  2016-06-11 03:15:44 +0800