[PATCH v6 0/7] dm-multipath: push back requests instead of queueing

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Hi Hannes,

I went over all of your patches and made a few tweaks, comments, and
improvements along the way.  Patch headers were modified very
slightly.

I wasn't seeing the need for (m->queue_io << 1) + m->queue_if_no_path
in v5's "[PATCH 3/6] dm-multipath: push back requests instead of
queueing" so I simplified that and documented the change in the
header.  If there is a reason for what you had please explain.

Patch 7 offers and incremental cleanup that builds on your v5
patchset.

I can rebase/modify any aspect of these patches so please just let me
know if there is something that needs changing.

Jun'ichi, I didn't add any tag for your contributions to this patchset
(either Acked-by or Reviewed-by) but I'd like you to reply to this
v6 patchset with those if you're OK with these changes.

Thanks,
Mike

Hannes Reinecke (5):
  dm mpath: do not call pg_init when it is already running
  dm mpath: push back requests instead of queueing
  dm mpath: remove process_queued_ios()
  dm mpath: reduce memory pressure when requeuing
  dm mpath: remove map_io()

Mike Snitzer (2):
  dm table: add dm_table_run_md_queue_async
  dm mpath: remove extra nesting in map function when path exists

 drivers/md/dm-mpath.c         | 208 ++++++++++++++----------------------------
 drivers/md/dm-table.c         |  19 ++++
 drivers/md/dm.c               |   5 +
 drivers/md/dm.h               |   1 +
 include/linux/device-mapper.h |   5 +
 5 files changed, 100 insertions(+), 138 deletions(-)

-- 
1.8.1.4

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