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4bcb982cce
We're out of space here, and none of the flags are easily reclaimable. Bump it to 64-bits and re-arrange the struct a bit to avoid gaps. Add a specific bitwise type for the request flags, io_request_flags_t. This will help catch violations of casting this value to a smaller type on 32-bit archs, like unsigned int. This creates a hole in the io_kiocb, so move nr_tw up and rsrc_node down to retain needing only cacheline 0 and 1 for non-polled opcodes. No functional changes intended in this patch. 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.