468 	struct vm_region *pregion;  in add_nommu_region()  local
477 		pregion = rb_entry(parent, struct vm_region, vm_rb);  in add_nommu_region()
478 		if (region->vm_start < pregion->vm_start)  in add_nommu_region()
480 		else if (region->vm_start > pregion->vm_start)  in add_nommu_region()
482 		else if (pregion == region)  in add_nommu_region()
1134 		struct vm_region *pregion;  in do_mmap()  local
1141 			pregion = rb_entry(rb, struct vm_region, vm_rb);  in do_mmap()
1143 			if (!(pregion->vm_flags & VM_MAYSHARE))  in do_mmap()
1147 			if (file_inode(pregion->vm_file) !=  in do_mmap()
1151 			if (pregion->vm_pgoff >= pgend)  in do_mmap()
1154 			rpglen = pregion->vm_end - pregion->vm_start;  in do_mmap()
1156 			rpgend = pregion->vm_pgoff + rpglen;  in do_mmap()
1162 			if ((pregion->vm_pgoff != pgoff || rpglen != pglen) &&  in do_mmap()
1163 			    !(pgoff >= pregion->vm_pgoff && pgend <= rpgend)) {  in do_mmap()
1171 			pregion->vm_usage++;  in do_mmap()
1172 			vma->vm_region = pregion;  in do_mmap()
1173 			start = pregion->vm_start;  in do_mmap()
1174 			start += (pgoff - pregion->vm_pgoff) << PAGE_SHIFT;  in do_mmap()
1178 			if (pregion->vm_flags & VM_MAPPED_COPY)  in do_mmap()
1186 					pregion->vm_usage--;  in do_mmap()
1187 					pregion = NULL;  in do_mmap()
1193 			region = pregion;  in do_mmap()