#ifndef __i386_MMU_H#define __i386_MMU_H#include<asm/semaphore.h>/* * The i386 doesn't have a mmu context, but * we put the segment information here. * * cpu_vm_mask is used to optimize ldt flushing. */typedefstruct{intsize;structsemaphoresem;void*ldt;void*vdso;}mm_context_t;#endif