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b0babf2a34
This adds bch2_btree_iter_peek_all_levels(), which returns keys from every level of the btree - interior nodes included - in monotonically increasing order, soon to be used by the backpointers check & repair code. - BTREE_ITER_ALL_LEVELS can now be passed to for_each_btree_key() to iterate thusly, much like BTREE_ITER_SLOTS - The existing algorithm in bch2_btree_iter_advance() doesn't work with peek_all_levels(): we have to defer the actual advancing until the next time we call peek, where we have the btree path traversed and uptodate. So, we add an advanced bit to btree_iter; when BTREE_ITER_ALL_LEVELS is set bch2_btree_iter_advanced() just marks the iterator as advanced. 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.