Hi folks, I'm trying to look for an explanation of if this is true and if so why writes gets priority over other operations (like reads)? I see in the code in write.c if FLUSH_HIGHPRI is set in flags then we'll have an RPC marked with high priority. The problem is I don't see anything setting FLUSH_HIGHPRI. I see that writes are written with either FLUSH_STABLE or FLUSH_COND_STABLE (or no flags). Basically I can't see how FLUSH_HIGHPRI is used. If it's not used, then question: does the NFS layer ever priorities writes over other operations? If NFS doesn't then prioritization must be coming from the VM system I'm thinking. Thank you.
