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The functions in fs/crypto/*.c are only called by filesystems configured with encryption support. Since the ->get_context(), ->set_context(), and ->empty_dir() operations are always provided in that case (and must be, otherwise there would be no way to get/set encryption policies, or in the case of ->get_context() even access encrypted files at all), there is no need to check for these operations being NULL and we can remove these unneeded checks. Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Richard Weinberger <richard@nod.at> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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.