Remove SCSI unchecked_isa_dma try 3

This reposts the patchkit to remove unchecked_isa_dma which was already discussed some time ago. Instead it replaces it with interfaces that declare the mask. Right now those interfaces map back to GFP_DMA eventually, but it is a preparation for using the DMA mask allocator eventually.

The previous time there were some disagreement on where to handle the sense buffer bouncing which was done in low level drivers in Boaz' version of the patchkit. I went back to the original code which keeps sense buffer bouncing in the mid layer, which should be non controversal.

I also removed blk_kmalloc and went back to the blk_q_mask() interfaces.

I believe there were no other controversies, so this should be ready for merging now.

Other main changes was to forward port it to 2.6.27rc8 and doing some retesting.

The changes are also available for pulling from

git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc-2.6 scsi-dma

Andi Kleen (21):
SCSI-ISA-DMA: Add the alloc/get_pages_mask calls
SCSI-ISA-DMA: Add blk_q_mask
SCSI-ISA-DMA: Pass gfp to scsi_allocate_command
SCSI-ISA-DMA: Add sense_buffer_isa to host template
SCSI-ISA-DMA: Remove unchecked_isa in BusLogic
SCSI-ISA-DMA: Remove unchecked_isa_dma in advansys.c
SCSI-ISA-DMA: Remove unchecked_isa_dma in gdth
SCSI-ISA-DMA: Remove unchecked_isa_dma in eata.c
SCSI-ISA-DMA: Remove unchecked_isa_dma in aha1542
SCSI-ISA-DMA: Remove unchecked_isa_dma in aha152x/wd7000/sym53c416/u14-34f/NCR53c406a
SCSI-ISA-DMA: Remove GFP_DMA uses in st/osst
SCSI-ISA-DMA: Remove unchecked_isa_dma support for hostdata
SCSI-ISA-DMA: Use blk_q_mask/get_pages_mask in sg driver
SCSI-ISA-DMA: Rely on block layer bouncing for ISA DMA devices scanning
SCSI-ISA-DMA: Don't disable direct_io for unchecked_isa_dma in st.c
SCSI-ISA-DMA: Remove automatic block layer bouncing for unchecked_isa_dma
SCSI-ISA-DMA: Remove GFP_DMA use in sr.c
SCSI-ISA-DMA: Remove unchecked_isa_dma from sysfs
SCSI-ISA-DMA: Switch to a single SCSI command pool
SCSI-ISA-DMA: Finally kill unchecked_isa_dma
SCSI-ISA-DMA: Convert DMA buffers in ch.c to allocate via the block layer

 Documentation/scsi/scsi_mid_low_api.txt |    4 +-
 drivers/scsi/BusLogic.c                 |   77 +++++++++++----
 drivers/scsi/NCR53c406a.c               |    8 ++-
 drivers/scsi/advansys.c                 |  162 ++++++++++++++++++++-----------
 drivers/scsi/aha152x.c                  |   29 +++++-
 drivers/scsi/aha1542.c                  |   40 ++++++--
 drivers/scsi/ch.c                       |   16 ++-
 drivers/scsi/eata.c                     |   54 ++++++++---
 drivers/scsi/gdth.c                     |   81 ++++++++++++----
 drivers/scsi/hosts.c                    |    5 +-
 drivers/scsi/osst.c                     |   24 ++---
 drivers/scsi/osst.h                     |    2 -
 drivers/scsi/scsi.c                     |   93 +++++++++++-------
 drivers/scsi/scsi_lib.c                 |    2 -
 drivers/scsi/scsi_scan.c                |    6 +-
 drivers/scsi/scsi_sysfs.c               |    2 -
 drivers/scsi/sg.c                       |   48 +++-------
 drivers/scsi/sr.c                       |    2 +-
 drivers/scsi/sr_ioctl.c                 |   13 +--
 drivers/scsi/sr_vendor.c                |    4 +-
 drivers/scsi/st.c                       |   37 +++----
 drivers/scsi/st.h                       |    2 -
 drivers/scsi/sym53c416.c                |    9 ++-
 drivers/scsi/u14-34f.c                  |   54 ++++++++---
 drivers/scsi/ultrastor.c                |   13 ++-
 drivers/scsi/wd7000.c                   |   48 ++++++---
 include/linux/blkdev.h                  |    5 +
 include/linux/gfp.h                     |   22 ++++-
 include/scsi/scsi_cmnd.h                |    5 +-
 include/scsi/scsi_host.h                |   14 ++-
 30 files changed, 569 insertions(+), 312 deletions(-)