[PATCH] Device-mapper misc cleanup

[Hannes Reinecke <hare@suse.de>]

This is small patchset for some cleanups I've found during
debugging other issues:

- Zero out bi_end_io: I always find it more convenient to
  explictly zero out things we've set previously. No harm
  done, but possibly easier debugging.
- Simplify call to free_devices(): free_devices() already
  does a list_for_each(), so we don't have to check for
  list_empty...
- Delayed cleanup for dm_table_destroy(): We have krefs
  in the kernel, which does exactly what we want. And I
  fail to see why we can't use them here. Plus we're
  saving an msleep ...

Hannes Reinecke (3):
  dm: zero out bi_end_io on remapping failure
  dm-table: simplify call to free_devices()
  dm-table: delayed cleanup for dm_table_destroy()

 drivers/md/dm-table.c |   29 ++++++++++++++---------------
 drivers/md/dm.c       |    1 +
 2 files changed, 15 insertions(+), 15 deletions(-)