[PATCH 0/9]raid5: fix write hole

[Shaohua Li <shli@fb.com>]

Neil,

These are the patches to fix write hole issue. It did everything you requested.
- one meta data type format
- no super block
- format suitable for future extention of caching.
- just fix write hole issue, no caching support

The recovery doesn't use stripe cache yet, need further tweak of the stripe
cache code. I hope it's easy enough. Please let me know how you think.

Thanks,
Shaohua

Shaohua Li (8):
  md: override md superblock recovery_offset for cache device
  raid5: add basic stripe log
  raid5: log reclaim support
  raid5: log recovery
  raid5: disable batch with log enabled
  raid5: don't allow resize/reshape with cache(log) support
  raid5: enable log for raid array with cache disk
  raid5: skip resync if cache(log) is enabled

Song Liu (1):
  MD: add a new disk role to present cache device

 drivers/md/Makefile            |    2 +-
 drivers/md/md.c                |   28 +-
 drivers/md/md.h                |    4 +
 drivers/md/raid5-cache.c       | 1242 ++++++++++++++++++++++++++++++++++++++++
 drivers/md/raid5.c             |   51 +-
 drivers/md/raid5.h             |   19 +
 include/uapi/linux/raid/md_p.h |   51 ++
 7 files changed, 1388 insertions(+), 9 deletions(-)
 create mode 100644 drivers/md/raid5-cache.c

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1.8.5.6