adding locks to access global mr list
Signed-off-by: Eyal Salomon <esalomon@mellanox.com>
tasks pool got empty when writing ("rdma read") 1 MB of data
Signed-off-by: Eyal Salomon <esalomon@mellanox.com>
release global data memory region upon pool free

Signed-off-by: Eyal Salomon <esalomon@mellanox.com>