search for: used_pages

For virtualization, we've developed virtio_ring for efficient communication. This would also work well for userspace-kernel communication, particularly for things like the tun device. By using the same ABI, we can join guests to the host kernel trivially. These patches are fairly alpha; I've seen some network stalls I have to track down and there are some fixmes. Comments welcome!

For virtualization, we've developed virtio_ring for efficient communication. This would also work well for userspace-kernel communication, particularly for things like the tun device. By using the same ABI, we can join guests to the host kernel trivially. These patches are fairly alpha; I've seen some network stalls I have to track down and there are some fixmes. Comments welcome!

...* contains an ordered, non-overlapping, non-contiguous list of * (offset, pointer to L2 directory). @@ -103,6 +106,8 @@ struct l1_entry { struct sparse_array { struct l1_entry *l1_dir; /* L1 directory. */ size_t l1_size; /* Number of entries in L1 directory. */ + size_t used_pages; /* Number of non-NULL L2 entries. */ + uint64_t max_pages; /* Maximum L2 pages if fully allocated. */ bool debug; }; @@ -140,6 +145,8 @@ alloc_sparse_array (bool debug) return NULL; sa->l1_dir = NULL; sa->l1_size = 0; + sa->used_pages = 0; + sa->...

I will be following up to this email with four separate threads each addressed to the appropriate single list, with proposed changes to: - the NBD protocol - qemu: both server and client - libnbd: client - nbdkit: server The feature in question adds a new optional NBD_INFO_ packet to the NBD_OPT_GO portion of handshake, adding up to 16 bits of information that the server can advertise to the