Hello everyone, I have a question that has been bothering me for a long time. I would like to ask a familiar friend to help explain it. In the NFSv4 protocol, it is clearly defined that during the delegation RECALL processing, the client needs to write the modified cache to the server side. However, throughout the process, I have not found the code for flushing dirty data in the kernel NFS client. I have repeatedly reviewed the code logic of nfs4_callback_recall and nfs4_state_manager, but still cannot understand where the dirty data is flushed. My question is: When the client is handling the RECALL operation, where does the process of flushing the dirty data take place? Best regards