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8e3f913e2a
Previously, copygc needed to walk the entire extents & reflink btrees to find extents that needed to be moved. Now that we have backpointers, this patch implements bch2_evacuate_bucket() in the move code, which copygc now uses for evacuating mostly empty buckets. Also, thanks to the new backpointers code, copygc can now move btree nodes. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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.