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| Filename | Latest commit message | Latest commit date |
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1d11ed122f
commit 9076dbd5ee837c3882fc42891c14cecd0354a849 upstream. While fixing up our ->last_byte_to_unpin locking I noticed that we will shorten len based on ->last_byte_to_unpin if we're caching when we're adding back the free space. This is correct for the free space, as we cannot unpin more than ->last_byte_to_unpin, however we use len to adjust the ->bytes_pinned counters and such, which need to track the actual pinned usage. This could result in WARN_ON(space_info->bytes_pinned) triggering at unmount time. Fix this by using a local variable for the amount to add to free space cache, and leave len untouched in this case. CC: stable@vger.kernel.org # 5.4+ Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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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.