324b494c28
Completion handling had been done in two steps: find all new completions under a lock, then handle those completions outside the lock. This was done to make the locked section as short as possible so that other threads using the same lock wait less time. The driver no longer shares locks during completion, and is in fact lockless for interrupt driven queues, so the optimization no longer serves its original purpose. Replace the two-pass completion queue handler with a single pass that completes entries immediately. Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Keith Busch <kbusch@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 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.