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[ Upstream commit9d123a35d7] If the caching thread fails to allocate a path, it returns without waking up any cache waiters, leaving them hang forever. Fix this by following the same approach as when we fail to start the caching thread: print an error message, disable inode caching and make the wakers fallback to non-caching mode behaviour (calling btrfs_find_free_objectid()). Fixes:581bb05094("Btrfs: Cache free inode numbers in memory") Reviewed-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.