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The previous commit ("dm verity: Add optional "try_verify_in_tasklet"
feature") imposed that CRYPTO_ALG_ASYNC mask be used even if the
optional "try_verify_in_tasklet" feature was not specified. This was
because verity_parse_opt_args() was called after handling the primary
args (due to it having data dependencies on having first parsed all
primary args).
Enhance verity_ctr() so that simple optional args, that don't have a
data dependency on primary args parsing, can alter how the primary
args are handled. In practice this means verity_parse_opt_args() gets
called twice. First with the new 'only_modifier_opts' arg set to true,
then again with it set to false _after_ parsing all primary args.
This allows the v->use_tasklet flag to be properly set and then used
when verity_ctr() parses the primary args and then calls
crypto_alloc_ahash() with CRYPTO_ALG_ASYNC conditionally set.
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
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.