tree 4058ba173eb411422482125e14e7bb12b70c8b38
parent 7bed45954b95601230ebf387d3e4e20e4a3cc025
author Ming Lei <ming.lei@redhat.com> 1516207312 +0800
committer Jens Axboe <axboe@kernel.dk> 1516207587 -0700

blk-mq: turn WARN_ON in __blk_mq_run_hw_queue into printk

We know this WARN_ON is harmless and in reality it may be trigged,
so convert it to printk() and dump_stack() to avoid to confusing
people.

Also add comment about two releated races here.

Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Stefan Haberland <sth@linux.vnet.ibm.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "jianchao.wang" <jianchao.w.wang@oracle.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>