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2433bea592
find_reloc_root() searches reloc_control::reloc_root_tree to find the reloc root. This behavior is only useful for relocation backref cache. For the incoming more generic purpose backref cache, we don't care about who owns the reloc root, but only care if it's a reloc root. So this patch makes the following modifications to make the reloc root search more specific to relocation backref: - Add backref_node::is_reloc_root This will be an extra indicator for generic purposed backref cache. User doesn't need to read root key from backref_node::root to determine if it's a reloc root. Also for reloc tree root, it's useless and will be queued to useless list. - Add backref_cache::is_reloc This will allow backref cache code to do different behavior for generic purpose backref cache and relocation backref cache. - Pass fs_info to find_reloc_root() - Export find_reloc_root() So backref.c can utilize this function. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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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.