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c9ebc4b737
Before this patch, journal replays could stomp on log flushes and each other because both log flushes and journal replays used the same sd_log_bio. Function gfs2_log_flush prevents other log flushes from interfering by taking the sd_log_flush_lock rwsem during the flush. However, it does not protect against journal replays. This patch allows the journal replay to take the same sd_log_flush_lock rwsem so use of the sd_log_bio is not stomped. Signed-off-by: Bob Peterson <rpeterso@redhat.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.