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Caleb Sander Mateos
c9d066ebfd
ublk_get_req_ref() and ublk_put_req_ref() currently call ublk_need_req_ref(ubq) to check whether the ublk device features require reference counting of its requests. However, all callers already know that reference counting is required: - __ublk_check_and_get_req() is only called from ublk_check_and_get_req() if user copy is enabled, and from ublk_register_io_buf() if zero copy is enabled - ublk_io_release() is only called for requests registered by ublk_register_io_buf(), which requires zero copy - ublk_ch_read_iter() and ublk_ch_write_iter() only call ublk_put_req_ref() if ublk_check_and_get_req() succeeded, which requires user copy to be enabled So drop the ublk_need_req_ref() check and the ubq argument in ublk_get_req_ref() and ublk_put_req_ref(). Signed-off-by: Caleb Sander Mateos <csander@purestorage.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250620151008.3976463-14-csander@purestorage.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 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.