1#ifndef __SYSDEP_I386_BARRIER_H 2#define __SYSDEP_I386_BARRIER_H 3 4/* Copied from include/asm-i386 for use by userspace. i386 has the option 5 * of using mfence, but I'm just using this, which works everywhere, for now. 6 */ 7#define mb() asm volatile("lock; addl $0,0(%esp)") 8 9#endif 10