block: fix drain_all condition in blk_drain_queue()
authorTejun Heo <tj@kernel.org>
Tue, 13 Dec 2011 23:33:37 +0000 (00:33 +0100)
committerJens Axboe <axboe@kernel.dk>
Tue, 13 Dec 2011 23:33:37 +0000 (00:33 +0100)
commit481a7d64790cd7ca61a8bbcbd9d017ce58e6fe39
tree2e8fe86240a5e95600cdad5de223050df37ab116
parent34f6055c80285e4efb3f602a9119db75239744dc
block: fix drain_all condition in blk_drain_queue()

When trying to drain all requests, blk_drain_queue() checked only
q->rq.count[]; however, this only tracks REQ_ALLOCED requests.  This
patch updates blk_drain_queue() such that it looks at all the counters
and queues so that request_queue is actually empty on completion.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
block/blk-core.c