458 	struct vm_region *pregion;  in add_nommu_region()  local
467 		pregion = rb_entry(parent, struct vm_region, vm_rb);  in add_nommu_region()
468 		if (region->vm_start < pregion->vm_start)  in add_nommu_region()
470 		else if (region->vm_start > pregion->vm_start)  in add_nommu_region()
472 		else if (pregion == region)  in add_nommu_region()
1081 		struct vm_region *pregion;  in do_mmap()  local
1088 			pregion = rb_entry(rb, struct vm_region, vm_rb);  in do_mmap()
1090 			if (!is_nommu_shared_mapping(pregion->vm_flags))  in do_mmap()
1094 			if (file_inode(pregion->vm_file) !=  in do_mmap()
1098 			if (pregion->vm_pgoff >= pgend)  in do_mmap()
1101 			rpglen = pregion->vm_end - pregion->vm_start;  in do_mmap()
1103 			rpgend = pregion->vm_pgoff + rpglen;  in do_mmap()
1109 			if ((pregion->vm_pgoff != pgoff || rpglen != pglen) &&  in do_mmap()
1110 			    !(pgoff >= pregion->vm_pgoff && pgend <= rpgend)) {  in do_mmap()
1118 			pregion->vm_usage++;  in do_mmap()
1119 			vma->vm_region = pregion;  in do_mmap()
1120 			start = pregion->vm_start;  in do_mmap()
1121 			start += (pgoff - pregion->vm_pgoff) << PAGE_SHIFT;  in do_mmap()
1125 			if (pregion->vm_flags & VM_MAPPED_COPY)  in do_mmap()
1133 					pregion->vm_usage--;  in do_mmap()
1134 					pregion = NULL;  in do_mmap()
1140 			region = pregion;  in do_mmap()