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Headers should not define non-inline functions, as this prevents them from being included more than once in a given program. pkey-helpers.h and the arch-specific headers it includes currently define multiple such non-inline functions. In most cases those functions can simply be made inline - this patch does just that. read_ptr() is an exception as it must not be inlined. Since it is only called from protection_keys.c, we just move it there. Link: https://lkml.kernel.org/r/20241209095019.1732120-9-kevin.brodsky@arm.com Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com> Cc: Aruna Ramakrishna <aruna.ramakrishna@oracle.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Joey Gouly <joey.gouly@arm.com> Cc: Keith Lucas <keith.lucas@oracle.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>