[PATCH 0/2] Modify read error handle for RAID-4,5,6.

["majianpeng" <majianpeng@gmail.com>]

When RAID-4,5,6 degraded and met read-error, it will eject the rdev.And then
the RAID will fail and lost data.Because the function of set-badsector,when 
this occur,it will set-badsector,not ejecting the rdev.
When RAID-4,5,6 met read-error, it will re-write if RAID was not degrade.But if 
re-write error,it will eject the rdev and RAID will degrade and it will take too
long time for recoverying.So I add judgement for controling how may re-write-error
can eject the rdev.

I do those for flexible controling the read-error for different situation.
	

majianpeng (2):
  md/raid456: When readed error and raid was degraded,it try to
    set badsector, not ejecting the rdev.
  md/raid456:Add interface for contorling eject rdev when re-write
    failed.

 drivers/md/md.c    |   35 +++++++++++++++++++++++++++++++++++
 drivers/md/md.h    |    2 ++
 drivers/md/raid5.c |   28 +++++++++++++++++++---------
 3 files changed, 56 insertions(+), 9 deletions(-)

-- 
1.7.5.4
 				
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majianpeng
2012-05-26