Jens Axboe 06b76d44ba io_uring: standardize the prep methods
We currently have a mix of use cases. Most of the newer ones are pretty
uniform, but we have some older ones that use different calling
calling conventions. This is confusing.

For the opcodes that currently rely on the req->io->sqe copy saving
them from reuse, add a request type struct in the io_kiocb command
union to store the data they need.

Prepare for all opcodes having a standard prep method, so we can call
it in a uniform fashion and outside of the opcode handler. This is in
preparation for passing in the 'sqe' pointer, rather than storing it
in the io_kiocb. Once we have uniform prep handlers, we can leave all
the prep work to that part, and not even pass in the sqe to the opcode
handler. This ensures that we don't reuse sqe data inadvertently.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-12-20 10:04:22 -07:00
2019-12-09 10:36:44 -08:00
2019-12-20 10:04:22 -07:00
2019-12-04 19:44:13 -08:00
2019-12-09 10:36:44 -08:00
2019-12-07 11:00:19 -08:00
2019-12-05 13:18:54 -08:00
2019-10-29 04:43:29 -06:00
2019-12-08 14:57:55 -08:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
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In order to build the documentation, use ``make htmldocs`` or
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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.
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