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rpc: - On a RPC_TRANSPORT_CLEANUP event, rpc_clnt_notify calls the registered notifyfn with a RPC_CLNT_DESTROY event. The notifyfn should properly cleanup the saved mydata on this event. - Break the reconnect chain when an rpc client is disabled. This will prevent new disconnect events which can lead to crashes. glusterd: - Added support for RPC_CLNT_DESTROY in glusterd_brick_rpc_notify - Use a common glusterd_rpc_clnt_unref() function throught glusterd in place of rpc_clnt_unref(). This function correctly gives up the big-lock before performing the unref. Change-Id: I93230441c5089039643fc9f5632477ef1b695348 BUG: 962619 Signed-off-by: Kaushal M <kaushal@redhat.com> Reviewed-on: http://review.gluster.org/5512 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>