Hi Andreas, I noticed that resize is protected by resize_lock. Then parallel resizer works. However, I think there is no need to make parallel resizer work. I think we can use an atomic integer 'resize_flag' instead of resize_lock, resize_flag is set to 1 before the kernel does resizing work, while resize_flag is set to 0 after the kernel finishes resizing work. Resizing is allowed only if resize_flag is 0. If resize_flag is 1, kernel returns -EBUSY to userspace. What about your opinion? Yongqiang. -- Best Wishes Yongqiang Yang -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html