client-handshake: synchronize config.remote_port setting b/w

rpc_clnt_reconnect and client_query_portmap_cbk

problem:
-------
Theoretically there is a possibility that we could complete
querying the remote brick's port number before rpc_transport_connect
can return. If rpc_clnt_reconnect happens to be the caller of
rpc_transport_connect and we've already got the remote brick's port
number by the time rpc_transport_connect returns, without synchronization,
rpc_clnt_connect resets config.remote_port to zero even before we have
attempted a connection with remote brick.

fix:
---
By making only poll thread do setting and resetting of
config.remote_port, we avoid the race-condition.

Change-Id: I51879ba1cac651a80ff5c9c070ec7fe1ceea9e05
BUG: 765051
Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Reviewed-on: http://review.gluster.org/4044
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>

0 files changed, 0 insertions, 0 deletions