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3f8d3f5432
Don't have bio_detain() BUG_ON if a dm_cell_key is beyond BIO_PRISON_MAX_RANGE or spans a boundary. Update dm-thin.c:build_key() to use dm_cell_key_has_valid_range() which will do this checking without using BUG_ON. Also update process_discard_bio() to check the discard bio that DM core passes in (having first imposed max_discard_granularity based splitting). dm_cell_key_has_valid_range() will merely WARN_ON_ONCE if it returns false because if it does: it is programmer error that should be caught with proper testing. So relax the BUG_ONs to be WARN_ON_ONCE. Signed-off-by: Mike Snitzer <snitzer@kernel.org> |
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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.