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At unpin_extent_range() we trigger a WARN_ON() when we don't find an extent map or we find one with a start offset not matching the start offset of the target range. This however isn't very useful for debugging because: 1) We don't know which condition was triggered, as they are both in the same WARN_ON() call; 2) We don't know which inode was affected, from which root, for which range, what's the start offset of the extent map, and so on. So trigger a separate warning for each case and log a message for each case providing information about the inode, its root, the target range, the generation and the start offset of the extent map we found. 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 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.