RFC RFC: handle queue_depth adjustments because of QUEUE_FULLs in scsi_error.c

First four patches are from Mike Christie's original RFC at:-

http://www.spinics.net/lists/linux-scsi/msg35959.html
http://www.spinics.net/lists/linux-scsi/msg35962.html
http://www.spinics.net/lists/linux-scsi/msg35961.html
http://www.spinics.net/lists/linux-scsi/msg35963.html
http://www.spinics.net/lists/linux-scsi/msg35964.html

Above four patches adds ramp down code and I appended ramp up code in following patches and tested this entire series with libfc/fcoe. This series works fine without any regression and also queue_depth adjustment works for both ramp down and ramp up.

Above patches are updated to scsi-misc -rc7 plus recently submitted 64 fcoe patches series by Rob
"[PATCH 00/64] libfc, libfcoe and fcoe updates for scsi-misc" This series also applies cleanly to scsi-misc -rc7.

I'd appreciate review comments for added more patches for ramp up.

I'll post my final patches to this list skipping fcoe list, this as per Rob Love suggestion since mostly scsi changes by this series beyond fcoe/libfc. However Rob agreed to review/Ack fcoe/libfc changes at this list.

Mike, I'll be able to post my ramp up patches only once you send final patches for ramp down on which my patches depends. As I said your patches are tested for libfc, so most common code is already tested and they are good go as far as libfc goes.

---

Mike Christie (4):
drivers: convert fc drivers calling scsi_track_queue_full
drivers: convert drivers setting the change_queue_depth callback scsi error: have scsi-ml call change_queue_depth to handle QUEUE_FULL
scsi-ml: modify change_queue_depth to take in reason why it is being called

Vasu Dev (5):
libfc: adds queue_depth ramp up to libfc
fcoe, libfc: fix an libfc issue with queue ramp down in libfc
scsi: add common queue_depth ramp up code
scsi: adds sdev->queue_ramp_up_period to sysfs
scsi: updates sdev to add queue_depth ramp up code

 drivers/ata/libata-scsi.c             |    6 ++-
 drivers/ata/sata_nv.c                 |    2 -
 drivers/message/fusion/mptscsih.c     |    8 +++-
 drivers/message/fusion/mptscsih.h     |    3 +
 drivers/scsi/3w-9xxx.c                |    5 ++
 drivers/scsi/3w-xxxx.c                |    5 ++
 drivers/scsi/53c700.c                 |    5 ++
 drivers/scsi/aacraid/linit.c          |    6 ++-
 drivers/scsi/arcmsr/arcmsr_hba.c      |    5 ++
 drivers/scsi/fcoe/fcoe.c              |    2 -
 drivers/scsi/hptiop.c                 |    5 ++
 drivers/scsi/ibmvscsi/ibmvfc.c        |    7 +++
 drivers/scsi/ibmvscsi/ibmvscsi.c      |    7 +++
 drivers/scsi/ipr.c                    |    7 +++
 drivers/scsi/libfc/fc_fcp.c           |   47 ++++++++++-----------
 drivers/scsi/libsas/sas_scsi_host.c   |    6 ++-
 drivers/scsi/lpfc/lpfc_scsi.c         |   75 ++++++++++++++++++---------------
 drivers/scsi/megaraid/megaraid_mbox.c |    7 +++
 drivers/scsi/mpt2sas/mpt2sas_scsih.c  |   10 +++-
 drivers/scsi/qla2xxx/qla_isr.c        |   32 --------------
 drivers/scsi/qla2xxx/qla_os.c         |   32 +++++++++++++-
 drivers/scsi/scsi.c                   |   10 ++++
 drivers/scsi/scsi_error.c             |   64 ++++++++++++++++++++++++++++
 drivers/scsi/scsi_scan.c              |    1 
 drivers/scsi/scsi_sysfs.c             |   41 +++++++++++++++++-
 include/linux/libata.h                |    2 -
 include/scsi/libfc.h                  |    2 -
 include/scsi/libsas.h                 |    3 +
 include/scsi/scsi_device.h            |    8 ++--
 include/scsi/scsi_host.h              |    9 ++++
 30 files changed, 295 insertions(+), 127 deletions(-)

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