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ab2a29ccff
This patch adds two new inode fields, bi_dir and bi_dir_offset, that point back to the inode's dirent. Since we're only adding fields for a single backpointer, files that have been hardlinked won't necessarily have valid backpointers: we also add a new inode flag, BCH_INODE_BACKPTR_UNTRUSTED, that's set if an inode has ever had multiple links to it. That's ok, because we only really need this functionality for directories, which can never have multiple hardlinks - when we add subvolumes, we'll need a way to enemurate and print subvolumes, and this will let us reconstruct a path to a subvolume root given a subvolume root inode. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
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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.