[Libguestfs] [PATCH nbdkit v2 01/11] server: Implement NBD_FLAG_CAN_MULTI_CONN.

[Richard W.M. Jones]

For existing commits, this is almost identical to v1, except that I
updated some commit messages and reordered the commits in a somewhat
more logical sequence.

The main changes are the extra commits:

[06/11] plugins: Return NBD_FLAG_CAN_MULTI_CONN from some readonly plugins.

 - Readonly plugins that can set the flag unconditionally.

[09/11] partitioning: Return NBD_FLAG_CAN_MULTI_CONN.
[10/11] data, memory: Return NBD_FLAG_CAN_MULTI_CONN.

 - Writeable plugins where it should be safe to set the flag always.

[11/11] memory, data: Use fine-grained locking and

 - Let's play with locking.

That last commit should be "data, memory: ..."

Rich.