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Introduce struct nvmet_alloc_ctrl_args to define the arguments for the function nvmet_alloc_ctrl() to avoid the need for passing a pointer to a struct nvmet_req as an argument. This new data structure aggregates together the arguments that were passed to nvmet_alloc_ctrl() (subsysnqn, hostnqn and kato), together with the struct nvmet_req fields used by nvmet_alloc_ctrl(), that is, the fields port, p2p_client, and ops as input and the result and error_loc fields as output, as well as a status field. nvmet_alloc_ctrl() is also changed to return a pointer to the allocated and initialized controller structure instead of a status code, as the status is now returned through the status field of struct nvmet_alloc_ctrl_args. The function nvmet_setup_p2p_ns_map() is changed to not take a pointer to a struct nvmet_req as argument, instead, directly specify the p2p_client device pointer needed as argument. The code in nvmet_execute_admin_connect() that initializes a new target controller after allocating it is moved into nvmet_alloc_ctrl(). The code that sets up an admin queue for the controller (and the call to nvmet_install_queue()) remains in nvmet_execute_admin_connect(). Finally, nvmet_alloc_ctrl() is also exported to allow target drivers to use this function directly to allocate and initialize a new controller structure without the need to rely on a fabrics connect command request. Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Tested-by: Rick Wertenbroek <rick.wertenbroek@gmail.com> Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Keith Busch <kbusch@kernel.org> |
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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 reStructuredText 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.