commit aed3ea94bdd2ac0a21ed0103d34097e202ee77f6
author Jens Axboe <axboe@fb.com> Mon Dec 22 14:04:42 2014 -0700
committer Jens Axboe <axboe@fb.com> Wed Dec 31 09:39:16 2014 -0700
tree e432ae8b2224a4172e4c91350b0135b14c587442
parent 2b25d981790b830f0e045881386866b970bf9066

block: wake up waiters when a queue is marked dying

If it's dying, we can't expect new request to complete and come
in an wake up other tasks waiting for requests. So after we
have marked it as dying, wake up everybody currently waiting
for a request. Once they wake, they will retry their allocation
and fail appropriately due to the state of the queue.

Tested-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>