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9e3aa80544
While testing a weird problem with -o degraded, I noticed I was getting leaked root errors BTRFS warning (device loop0): writable mount is not allowed due to too many missing devices BTRFS error (device loop0): open_ctree failed BTRFS error (device loop0): leaked root -9-0 refcount 1 This is the DATA_RELOC root, which gets read before the other fs roots, but is included in the fs roots radix tree. Handle this by adding a btrfs_drop_and_free_fs_root() on the data reloc root if it exists. This is ok to do here if we fail further up because we will only drop the ref if we delete the root from the radix tree, and all other cleanup won't be duplicated. CC: stable@vger.kernel.org # 5.8+ Reviewed-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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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.