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Use of the synchronous digest API limits dm-verity to using pure CPU based algorithm providers and rules out the use of off CPU algorithm providers which are normally asynchronous by nature, potentially freeing CPU cycles. This can reduce performance per Watt in situations such as during boot time when a lot of concurrent file accesses are made to the protected volume. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> CC: Eric Biggers <ebiggers3@gmail.com> CC: Ondrej Mosnáček <omosnacek+linux-crypto@gmail.com> Tested-by: Milan Broz <gmazyland@gmail.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.