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I/O injection gets reduced if it increases the request service times of the victim queue beyond a certain threshold. The threshold, in its turn, is computed as a function of the base service time enjoyed by the queue when it undergoes no injection. As a consequence, for injection to work properly, the above base value has to be accurate. In this respect, such a value may vary over time. For example, it varies if the size or the spatial locality of the I/O requests in the queue change. It is then important to update this value whenever possible. This commit performs this update. Reported-by: Srivatsa S. Bhat (VMware) <srivatsa@csail.mit.edu> Tested-by: Srivatsa S. Bhat (VMware) <srivatsa@csail.mit.edu> Signed-off-by: Paolo Valente <paolo.valente@linaro.org> 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.