On Thu, Mar 21, 2013 at 1:51 AM, Michael S. Tsirkin <m...@redhat.com> wrote: >> In that case, no, I don't see any reason for LOCAL_WRITE, since the >> only RDMA operations that will access this memory are remote reads. > > What is the meaning of LOCAL_WRITE then? There are no local > RDMA writes as far as I can see.
Umm, it means you're giving the local adapter permission to write to that memory. So you can use it as a receive buffer or as the target for remote data from an RDMA read operation. > OK then what we need is a new flag saying "I really do not > intend to write into this memory please do not break > COW or do anything else just in case I do". Isn't that a shared read-only mapping? - R. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
