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270b09313b
IOPRIO_PRIO_DATA in the new kernel version includes level and hint, So Macro IOPRIO_PRIO_LEVEL is more accurate to get ckpt thread ioprio data/level, and it is also consisten with the way setting ckpt thread ioprio by IOPRIO_PRIO_VALUE(class, data/level). Besides, change variable name from "data" to "level" for more readable. Signed-off-by: Zhiguo Niu <zhiguo.niu@unisoc.com> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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.