nvme: factor out a nvme_tryget_ns_head helper
authorChristoph Hellwig <hch@lst.de>
Wed, 7 Apr 2021 12:20:40 +0000 (14:20 +0200)
committerChristoph Hellwig <hch@lst.de>
Thu, 15 Apr 2021 06:12:55 +0000 (08:12 +0200)
commit871ca3ef132650b9b7777c2f2fd15b72c282d792
tree14933692068857d5a220c1b8d9964650dda92724
parent2405252a680e2151046f4f256d706c3ca92fedef
nvme: factor out a nvme_tryget_ns_head helper

Add a helper to avoid opencoding ns_head->ref manipulations.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Javier González <javier.gonz@samsung.com>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
drivers/nvme/host/core.c