This patch shifts the key-related error codes up by one and inserts an
ECANCELED error code where not already defined.  It seems that has been
defined in glibc without passing it back to the kernel:-/
Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>