mainline inclusion
from mainline-5.0-rc1
commit 4e224106
category: bugfix
bugzilla: 167363
CVE: NA

---------------------------

This gets rid of all the messing with cq_vector and the ->polled field
by using an atomic bitop to mark the queue enabled or not.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NKeith Busch <keith.busch@intel.com>
Signed-off-by: NJens Axboe <axboe@kernel.dk>

Conflicts:
	drivers/nvme/host/pci.c
	[ Non-bugfix patch 4b04cc6a("nvme: add separate poll queue
	  map") is not applied. ]
Signed-off-by: NZhihao Cheng <chengzhihao1@huawei.com>
Reviewed-by: NHou Tao <houtao1@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>