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3089738868
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>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.