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217316a601
We take global fiq->waitq.lock every time, when we are in this function, but interrupted requests are just small subset of all requests. This patch optimizes request_end() and makes it to take the lock when it's really needed. queue_interrupt() needs small change for that. After req is linked to interrupt list, we do smp_mb() and check for FR_FINISHED again. In case of FR_FINISHED bit has appeared, we remove req and leave the function: Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> |
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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.