[PATCHv4,0/9] scsi: remove legacy cmd_list implementation

Message

Hannes Reinecke Nov. 18, 2019, 9:21 a.m. UTC

Hi all,

with the switch to blk-mq we have an efficient way of looking up
outstanding commands via blk_mq_rq_busy_iter().
In this patchset the dpt_i2o and aacraid drivers are switched over
to using that function, and the now obsolete cmd_list implemantation
in the SCSI midlayer is removed.

As usual, comments and reviews are welcome.

Changes to v1:
- Fixup kbuild warning

Changes to v2:
- Add scsi_host_busy_iter()
- Include reviews from Christoph

Changes to v3:
- Include reviews from Christoph
- Add midlayer helper to terminate outstanding commands
- Split off aacraid modifcations into several patches

Hannes Reinecke (9):
  dpt_i2o: rename adpt_i2o_to_scsi() to adpt_i2o_scsi_complete()
  scsi: add scsi_host_flush_commands() helper
  dpt_i2o: use scsi_host_flush_commands() to abort outstanding commands
  aacraid: Do not wait for outstanding write commands on
    synchronize_cache
  aacraid: use midlayer helper to terminate outstanding commands
  scsi: add scsi_host_busy_iter()
  aacraid: use scsi_host_busy_iter() in aac_wait_for_io_completion()
  aacraid: use scsi_host_busy_iter() in get_num_of_incomplete_fibs()
  scsi: Remove cmd_list functionality

 drivers/scsi/aacraid/aachba.c   | 76 +-------------------------------------
 drivers/scsi/aacraid/comminit.c | 30 +++++++--------
 drivers/scsi/aacraid/commsup.c  | 24 +-----------
 drivers/scsi/aacraid/linit.c    | 81 +++++++++++++++++++++--------------------
 drivers/scsi/dpt_i2o.c          | 25 ++-----------
 drivers/scsi/dpti.h             |  3 +-
 drivers/scsi/hosts.c            | 57 +++++++++++++++++++++++++++++
 drivers/scsi/scsi.c             | 14 -------
 drivers/scsi/scsi_error.c       |  1 -
 drivers/scsi/scsi_lib.c         | 31 ----------------
 drivers/scsi/scsi_priv.h        |  2 -
 drivers/scsi/scsi_scan.c        |  1 -
 include/scsi/scsi_cmnd.h        |  1 -
 include/scsi/scsi_device.h      |  1 -
 include/scsi/scsi_host.h        |  8 +++-
 15 files changed, 125 insertions(+), 230 deletions(-)