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7195f240c6
Now that we've finished adding allocation groups to the realtime volume, let's make the file block mapping address (xfs_rtblock_t) a segmented value just like we do on the data device. This means that group number and block number conversions can be done with shifting and masking instead of integer division. While in theory we could continue caching the rgno shift value in m_rgblklog, the fact that we now always use the shift value means that we have an opportunity to increase the redundancy of the rt geometry by storing it in the ondisk superblock and adding more sb verifier code. Extend the sueprblock to store the rgblklog value. Now that we have segmented addresses, set the correct values in m_groups[XG_TYPE_RTG] so that the xfs_group helpers work correctly. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> |
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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.