Mike Snitzer a271a89c6e dm mpath: take m->lock spinlock when testing QUEUE_IF_NO_PATH
Fix multipath_end_io, multipath_end_io_bio and multipath_busy to take
m->lock while testing if MPATHF_QUEUE_IF_NO_PATH bit is set.  These are
all slow-path cases when no paths are available so extra locking isn't a
performance hit.  Correctness matters most.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2020-07-13 11:47:32 -04:00
2020-07-09 18:00:56 -07:00
2020-07-12 16:34:50 -07:00

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.
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