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5af1eae78d
We have a couple error branches where we have an error stored in the 'err' variable and then jump to the 'out' label, however we don't return that error, we just return 0. Normally this is not a problem since those error branches call extent_io_tree_panic() which triggers a BUG() call, however it's possible to have rather exotic kernel config with CONFIG_BUG disabled in which case the BUG() call does nothing and we fallthrough. So make sure to return the error, not just to fix that exotic case but also to make the code less confusing. While at it also rename the 'err' variable to 'ret' since this is the style we prefer and use more widely. Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
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 reStructuredText 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.