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[ Upstream commit cf8f0e6c1429be7652869059ea44696b72d5b726 ] It's quite reasonable that some customer somewhere will want to configure a realtime volume with more than 2^32 extents. If they try to do this, the highbit32() call will truncate the upper bits of the xfs_rtbxlen_t and produce the wrong value for rextslog. This in turn causes the rsumlevels to be wrong, which results in a realtime summary file that is the wrong length. Fix that. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com> Acked-by: "Darrick J. Wong" <djwong@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.