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8a092f440e
xfs: enable in-core block reservation for rt metadata [v6.2 03/14] In preparation for adding reverse mapping and refcounting to the realtime device, enhance the metadir code to reserve free space for btree shape changes as delayed allocation blocks. This enables us to pre-allocate space for the rmap and refcount btrees in the same manner as we do for the data device counterparts, which is how we avoid ENOSPC failures when space is low but we've already committed to a COW operation. This has been running on the djcloud for months with no problems. Enjoy! Signed-off-by: "Darrick J. Wong" <djwong@kernel.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 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.