[PATCH 0/2] Resubmit items failed during writeback

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This patchset aims to fix the AIL items retry problem that is on my plate for a
while, and it's based on a discussion I had with Dave off-list.

This basically consists of:

1- a mechanism to properly report failures during writeback back to the items
   attached to the failed buffer
2- Use this mechanism to detect such failures and properly re-submit the items
   failed previously

It is worth to mention that this same problem is also possible in dquot code,
but the fix is almost identical to the inodes.

I am not submitting a fix for dquot yet to avoid the need to create VX for both
patches, once we agree with the solution, I'll submit a fix to dquot.

Reviews are welcome :-)

-- 
2.9.3

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