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b4f20bb4e6
We don't need to call this for every loop. This is particularly troublesome if we are task_work intensive, and get woken more often than we desire due to that. Just do it at the end, that's always safe as we initialize the waitqueue list head anyway. This can save a considerable amount of hammering on the waitqueue lock, which is also hot from the request completion side. 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.