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Kent Overstreet 66487c54ad bcachefs: Fix is_ancestor bitmap
The is_ancestor bitmap is at optimization for bch2_snapshot_is_ancestor;
once we get sufficiently close to the ancestor ID we're searching for we
test a bitmap.

But initialization of the is_ancestor bitmap was broken; we do it by
using bch2_snapshot_parent(), but we call that on nodes that haven't
been initialized yet with bch2_mark_snapshot().

Fix this by adding a separate loop in bch2_snapshots_read() for
initializing the is_ancestor bitmap, and also add some new debug asserts
for checking this sort of breakage in the future.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-22 17:10:11 -04:00
arch
block
certs
crypto
Documentation
drivers
fs bcachefs: Fix is_ancestor bitmap 2023-10-22 17:10:11 -04:00
include bcachefs: Update export_operations for snapshots 2023-10-22 17:09:17 -04:00
init
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MAINTAINERS MAINTAINERS: add Brian Foster as a reviewer for bcachefs 2023-10-22 17:10:08 -04:00
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README

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.