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e67ab0450c
bch2_btree_node_iter_prev_filter() tried to be smart about iterating backwards when skipping over whiteouts/discards - but unfortunately, doing so can leave the node iterator in an inconsistent state; the sane solution is to just always iterate backwards one key at a time. But we compact btree nodes when more than a quarter of the keys are whiteouts/discards, so the optimization wasn't buying us that much anyways. 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.