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