unsigned long offset; 
unsigned long extent, next, old_end; pmd_t *old_pmd, *new_pmd; 
static unsigned long move_page_tables(struct vm_area_struct *vma,		unsigned long old_addr, struct vm_area_struct *new_vma,		unsigned long new_addr, unsigned long len){	unsigned long offset;	flush_cache_range(vma, old_addr, old_addr + len);	/*	 * This is not the clever way to do this, but we're taking the	 * easy way out on the assumption that most remappings will be	 * only a few pages.. This also makes error recovery easier.	 */	for (offset = 0; offset < len; offset += PAGE_SIZE) {		if (move_one_page(vma, old_addr + offset,				new_vma, new_addr + offset) < 0)			break;		cond_resched();	}	return offset;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/7be7a546994f1222b2312fd348da14e16b6b7b42/mremap.c/clean/mm/mremap.c