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Normally, net/ would verify msghdr before importing iovec, for example see copy_msghdr_from_user(), which further assumed by __copy_msghdr() validating msg->msg_iovlen. io_uring does it in reverse order, which is fine, but it'll be more convenient for flip it so that the iovec business is done at the end and eventually can be nicely pulled out of msghdr parsing section and thought as a sepaarate step. That also makes structure accesses more localised, which should be better for caches. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/cd35dc1b48d4e6e31f59ae7304c037fbe8a3fd3d.1740569495.git.asml.silence@gmail.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.