[PATCH v3 0/6] scsi_debug: bug fixes and cleanups for data integrity support

[Akinobu Mita <akinobu.mita@gmail.com>]

This patch set includes bug fixes which I hit when I was tried testing
the data integrity support in scsi_debug on x86_32.

And it also includes cleanups which helps increasing readability and
further bug fixing in data integrity support.

* Changes from v2
- Add new bug fix patch for UNMAP command support
- Change the way to fix for the patch "fix invalid address passed to
  kunmap_atomic()"
- Reduce more lines of code for the patch "reduce duplication between
  prot_verify_read and prot_verify_writ"

* Changes from v1
- Split the patch "fix data integrity support on highmem machine" into
  two separate patches.
- Add new cleanup patch "reduce duplication between prot_verify_read and
  prot_verify_write".

Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
Cc: Douglas Gilbert <dgilbert@interlog.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org

Akinobu Mita (6):
  scsi_debug: fix invalid address passed to kunmap_atomic()
  scsi_debug: fix incorrectly nested kmap_atomic()
  scsi_debug: fix NULL pointer dereference with parameters dif=0 dix=1
  scsi_debug: invalidate protection info for unmapped region
  scsi_debug: simplify offset calculation for dif_storep
  scsi_debug: reduce duplication between prot_verify_read and
    prot_verify_write

 drivers/scsi/scsi_debug.c | 176 +++++++++++++++++++---------------------------
 1 file changed, 72 insertions(+), 104 deletions(-)

-- 
1.8.1.4