Syncing Files

Finally, we need to implement the fsync file operation, for both files and directories. The function is stamfs_sync_file:

• Take the inode from the given dentry parameter.
• Sync the buffers related to the inode (in our case, that's the inode's buffer-head and the block index buffer-head).
• Sync the data buffers of the file.
• If the inode itself is dirty, write the inode to disk in a synchronous manner.

Originally written by guy keren