if ((newState & Smb2LeaseState.SMB2_LEASE_READ_CACHING) == 0) {
                // Lost read cache - invalidate directory cache
                entry.invalidate();
            }
        } else {
            // Lease completely broken - invalidate cache
            entry.invalidate();
        }

        if ((newState & Smb2LeaseState.SMB2_LEASE_HANDLE_CACHING) == 0) {

     *
     * @return true if valid, false if invalidated
     */
    public boolean isValid() {
        return valid;
    }

    /**
     * Invalidate this memory region
     *
     * After invalidation, the region cannot be used for RDMA operations.
     */
    public abstract void invalidate();

    /**
     * Generate local key for this memory region
     *

                    this.currentHash = newHash.clone();
                }
            }
        }

        public boolean isValid() {
            return isValid;
        }

        public void invalidate() {
            this.isValid = false;
            // Clear sensitive data
            synchronized (hashLock) {
                Arrays.fill(currentHash, (byte) 0);
            }
        }
    }

            if (file != null) {
                try {
                    // Invalidate any cached read data
                    // This would typically clear file's internal read buffers
                    // For now, we log the action as the actual implementation
                    // depends on SmbFile's internal caching mechanism
                    log.info("Invalidated read cache for: {}", path);
                } catch (Exception e) {

        entry.updateChild("file1.txt", 1024L, 1000L, false, 0x20, 500L, 800L);
        entry.updateChild("file2.txt", 2048L, 2000L, false, 0x20, 600L, 900L);
        entry.markComplete();

        // Test FILE_ADDED - should invalidate cache
        directoryLeaseManager.handleDirectoryChange(directoryPath, "file3.txt", DirectoryChangeNotifier.DirectoryChangeType.FILE_ADDED);
        assertFalse(entry.isComplete());

        // Re-setup for next test

        entry.updateChild("file1.txt", 1024L, 1000L, false, 0x20, 500L, 800L);
        entry.updateChild("file2.txt", 2048L, 2000L, false, 0x20, 600L, 900L);
        entry.markComplete();

        // Invalidate the cache
        entry.invalidate();

        assertFalse(entry.isComplete());
        assertTrue(entry.hasChanges());
        assertTrue(entry.getChildren().isEmpty());
    }

    @Test

     * @param access access permissions (ignored for TCP)
     */
    public TcpMemoryRegion(ByteBuffer buffer, EnumSet<RdmaAccess> access) {
        super(buffer, access);
    }

    @Override
    public void invalidate() {
        // No real invalidation needed for TCP
        valid = false;
    }

    @Override
    protected int generateLocalKey() {
        return keyGenerator.getAndIncrement();
    }

    @Override

            this.lastUpdateTime = System.currentTimeMillis();
        } finally {
            lock.writeLock().unlock();
        }
    }

    /**
     * Invalidate the cache
     */
    public void invalidate() {
        lock.writeLock().lock();
        try {
            children.clear();
            isComplete = false;
            hasChanges = true;
        } finally {

    }

    @Override
    public void invalidate() {
        if (valid && memoryRegister != null) {
            try {
                // In real implementation, this would deregister the memory:
                // memoryRegister.deregisterMemory();

                log.debug("DiSNI memory region invalidated");
            } catch (Exception e) {

     * Used in SMB2 READ and WRITE requests to indicate RDMA channel
     */
    public static final int SMB2_CHANNEL_RDMA_V1 = 0x00000001;

    /**
     * SMB2 Channel constant for RDMA V1 invalidate
     * Used to indicate RDMA with invalidation
     */
    public static final int SMB2_CHANNEL_RDMA_V1_INVALIDATE = 0x00000002;

    /**
     * SMB2 RDMA Transform Capabilities negotiate context ID
     */