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c1379e247a
All request preparations are done only during submission, reflect it in the code by moving io_req_prep() much earlier into io_queue_sqe(). That's much cleaner, because it doen't expose bits to async code which it won't ever use. Also it makes the interface harder to misuse, and there are potential places for bugs. For instance, __io_queue() doesn't clear @sqe before proceeding to a next linked request, that could have been disastrous, but hopefully there are linked requests IFF sqe==NULL, so not actually a bug. Signed-off-by: Pavel Begunkov <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 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.