r2_start          381 arch/x86/mm/pageattr.c 		     unsigned long r2_start, unsigned long r2_end)
r2_start          383 arch/x86/mm/pageattr.c 	return (r1_start <= r2_end && r1_end >= r2_start) ||
r2_start          384 arch/x86/mm/pageattr.c 		(r2_start <= r1_end && r2_end >= r1_start);