ae9f5ccea4
'struct ublk_map_data' is passed to ublk_copy_user_pages() for copying data between userspace buffer and request pages. Here what matters is userspace buffer address/len and 'struct request', so replace ->io field with user buffer address, and rename max_bytes as len. Meantime remove 'ubq' field from ublk_map_data, since it isn't used any more. Then code becomes more readable. Reviewed-by: Ziyang Zhang <ZiyangZhang@linux.alibaba.com> Signed-off-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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.