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bc6d2d1041
hash_check_key() checks and repairs the hash table btrees: dirents and xattrs are open addressing hash tables. We recently had a corruption reported where the hash type on an inode somehow got flipped, which made the existing dirents invisible and allowed new ones to be created with the same name. Now, hash_check_key() can repair duplicates: it will delete one of them, if it has an xattr or dangling dirent, but if it has two valid dirents one of them gets renamed. 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 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.