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author David Howells <dhowells@redhat.com> 1209456094 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1209481577 -0700

keys: make key_serial() a function if CONFIG_KEYS=y

Make key_serial() an inline function rather than a macro if CONFIG_KEYS=y.
This prevents double evaluation of the key pointer and also provides better
type checking.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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