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46141dc891
This patch introduces a helper to shrink unused space in the last AG by fixing up the freespace btree. Also make sure that the per-AG reservation works under the new AG size. If such per-AG reservation or extent allocation fails, roll the transaction so the new transaction could cancel without any side effects. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@redhat.com> 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 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.