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7e5b8e00e2
A user contributed a filessytem dump, where the dump was actually corrupted (due to being taken while the filesystem was online), but which exposed an interesting bug in fsck - reconstruct_inode(). When itearting in BTREE_ITER_filter_snapshots mode, it's required to give an end position for the iteration and it can't span inode numbers; continuing into the next inode might mean we start seeing keys from a different snapshot tree, that the is_ancestor() checks always filter, thus we're never able to return a key and stop iterating. Backwards iteration never implemented the end position because nothing else needed it - except for reconstuct_inode(). Additionally, backwards iteration is now able to overlay keys from the journal, which will be useful if we ever decide to start doing journal replay in the background. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
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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 reStructuredText 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.