exofs: raid6 support for the 3.16 merge window

Hi Linus
The following changes since commit:

	[d6d211db] Linux 3.15-rc5 (2014-05-09 13:10:52 -0700)

are available in the git repository at:

git://git.open-osd.org/linux-open-osd.git for-linus

for you to fetch changes up to:

	[ce5d36aa] ore: Support for raid 6 (2014-05-22 14:48:15 +0300)

proud to present support for raid6 in ORE.
These simple patches will enable raid6 using the Kernel's raid6_pq engine for support under exofs and pnfs-objects. There is nothing needed to do at exofs and pnfs-obj. Just fire your mkfs.exofs with --raid=6 (that was already supported before) and off you go as usual. The ORE will pick up the new map and will start writing two devices of redundancy bits. The patches are so simple because most of the ORE was already for the general raid case, only a few bug fixes were needed and the actual wiring into the raid6_pq engine.

Thanks
Boaz

----------------------------------------------------------------
Boaz Harrosh (3):
ore: (trivial) reformat some code
ore: Remove redundant dev_order(), more cleanups
ore: Support for raid 6

 fs/exofs/Kconfig.ore |   2 ++
 fs/exofs/ore.c       | 100 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------------------------------
 fs/exofs/ore_raid.c  |  56 ++++++++++++++++++++++++++++++--------------------------
 fs/exofs/ore_raid.h  |  21 ++-------------------
 4 files changed, 98 insertions(+), 81 deletions(-)