switch the block layer to use kmap_local_page

[Christoph Hellwig]

Hi all,

this series switches the core block layer code and all users of the
existing bvec kmap helpers to use kmap_local_page.  Drivers that
currently use open coded kmap_atomic calls will converted in a follow
on series.

Diffstat:
 arch/mips/include/asm/mach-rc32434/rb.h |    2 -
 block/bio-integrity.c                   |   14 ++++------
 block/bio.c                             |   37 +++++++---------------------
 block/blk-map.c                         |    2 -
 block/bounce.c                          |   35 ++++++--------------------
 block/t10-pi.c                          |   16 ++++--------
 drivers/block/ps3disk.c                 |   19 ++------------
 drivers/block/rbd.c                     |   15 +----------
 drivers/md/dm-writecache.c              |    5 +--
 include/linux/bio.h                     |   42 --------------------------------
 include/linux/bvec.h                    |   27 ++++++++++++++++++--
 include/linux/highmem.h                 |    4 +--
 12 files changed, 64 insertions(+), 154 deletions(-)