nvme: add a nvme_ns_head_multipath helper

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Move the multipath gendisk out of #ifdef CONFIG_NVME_MULTIPATH and add
a new nvme_ns_head_multipath that uses it to check if a ns_head has
a multipath device associated with it.

Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
[hch: added the IS_ENABLED, converted a few existing users]
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: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>

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Minwoo Im 2021-04-07 17:49:29 +02:00 • committed by Christoph Hellwig

parent 95d54bd1a4

commit 3089738868

2 changed files with 8 additions and 7 deletions

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8

drivers/nvme/host/core.c

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7

drivers/nvme/host/nvme.h

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