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71c61a0077
LOCALIO will be able to call fh_verify() with a NULL rqstp. In this case, the existing trace points need to be skipped because they want to dereference the address fields in the passed-in rqstp. Temporarily make these trace points conditional to avoid a seg fault in this case. Putting the "rqstp != NULL" check in the trace points themselves makes the check more efficient. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Mike Snitzer <snitzer@kernel.org> Acked-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: NeilBrown <neilb@suse.de> Signed-off-by: Anna Schumaker <anna.schumaker@oracle.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 reStructuredText 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.