75b28affdd
Both the sq and the cq rings have sizes just over a power of two, and the sq ring is significantly smaller. By bundling them in a single alllocation, we get the sq ring for free. This also means that IORING_OFF_SQ_RING and IORING_OFF_CQ_RING now mean the same thing. If we indicate this to userspace, we can save a mmap call. Signed-off-by: Hristo Venev <hristo@venev.name> 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.