PROT_GROWSDOWN    492 mm/mprotect.c  	const int grows = prot & (PROT_GROWSDOWN|PROT_GROWSUP);
PROT_GROWSDOWN    498 mm/mprotect.c  	prot &= ~(PROT_GROWSDOWN|PROT_GROWSUP);
PROT_GROWSDOWN    499 mm/mprotect.c  	if (grows == (PROT_GROWSDOWN|PROT_GROWSUP)) /* can't be both */
PROT_GROWSDOWN    531 mm/mprotect.c  	if (unlikely(grows & PROT_GROWSDOWN)) {