137                 if (unlikely(use4k))  in mm_map_proc_page_table()
147                     else if (unlikely(*pde_ptr & (1 << 7)))  in mm_map_proc_page_table()
162                         if (unlikely(*pte_ptr != 0))  in mm_map_proc_page_table()
172                     if (unlikely((*pde_ptr != 0) && user == true))  in mm_map_proc_page_table()
278                     if (unlikely(mm_check_page_table(pt_ptr)) == 0)  in mm_unmap_proc_table()
293             if (unlikely(mm_check_page_table(pd_ptr)) == 0)  in mm_unmap_proc_table()
300         if (unlikely(mm_check_page_table(pdpt_ptr)) == 0)  in mm_unmap_proc_table()
324     if (unlikely(vaddr & (PAGE_4K_SIZE - 1)))  in mm_create_vma()
328     if (unlikely(vma == NULL))  in mm_create_vma()
372         if (unlikely(vma->anon_vma == NULL || vma->anon_vma->page == NULL))  in mm_map_vma()
380     if (unlikely(pg->anon_vma == NULL)) // 若页面不存在anon_vma，则为页面创建anon_vma  in mm_map_vma()
383         if (unlikely(pg->anon_vma == NULL))  in mm_map_vma()
413         if (unlikely(retval != 0))  in mm_map_vma()
433         if (unlikely(retval != 0))  in mm_map_vma()
449         if (unlikely(retval != 0))  in mm_map_vma()
481         if (unlikely(vma == NULL))  in mm_map()
497         if (unlikely(retval != 0))  in mm_map()
519     if (unlikely(vma->vm_mm != mm))  in mm_unmap_vma()
556         if (unlikely(vma == NULL))  in mm_unmap()
562         if (unlikely(vma->vm_start != (vaddr + unmapped)))  in mm_unmap()