9de6c08700
Refilling the Input Queue requires additional checks, as the refilled SBALs can overlap with the ACKs that qdio maintains on the queue. This code path is way too complex, and does a whole bunch of wrap-around checks that the modulo arithmetic in sub_buf() takes care of by itself. So shrink down all that code into a few lines of equivalent functionality. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
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.