Component Type: kbuild config

Description: Enable temporary caching of the last request_key() result

More info: This option causes the result of the last successful request_key() call that didn't upcall to the kernel to be cached temporarily in the task_struct. The cache is cleared by exit and just prior to the resumption of userspace. This allows the key used for multiple step processes where each step wants to request a key that is likely the same as the one requested by the last step to save on the searching. An example of such a process is a pathwalk through a network filesystem in which each method needs to request an authentication key. Pathwalk will call multiple methods for each dentry traversed (permission, d_revalidate, lookup, getxattr, getacl, ...).

Build project: Kconfig (Linux kconfig) (Path: security\keys\Kconfig )

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