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d803d12394
Rather than try and have io_read/io_write turn REQ_F_REISSUE into -EAGAIN, catch the REQ_F_REISSUE when the request is otherwise considered as done. This is saner as we know this isn't happening during an actual submission, and it removes the need to randomly check REQ_F_REISSUE after read/write submission. If REQ_F_REISSUE is set, __io_submit_flush_completions() will skip over this request in terms of posting a CQE, and the regular request cleaning will ensure that it gets reissued via io-wq. 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.