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089975379d
We never checked for errors on add_disk() as this function returned void. Now that this is fixed, use the shiny new error handling. There are two calls to dm_setup_md_queue() which can fail then, one on dm_early_create() and we can easily see that the error path there calls dm_destroy in the error path. The other use case is on the ioctl table_load case. If that fails userspace needs to call the DM_DEV_REMOVE_CMD to cleanup the state - similar to any other failure. Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> Signed-off-by: Mike Snitzer <snitzer@redhat.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.