sorry for the stupid question, but
if I have a linux system and the Numa, I perform a write operation to the disk, the file is cached in in Linux (page cache). Knows another Numa node (socket) that the file is already in the cache or it will read it from the disk? If another node knows that the file is in the cache - does this mean that every Numa node will constantly poll the central table some cached data or it is running as it differently?
Thank you for your attention to my problem