The sendpage() call grabs the sock lock before calling the default
implementation - which tries to grab it once again.
Signed-off-by: NStefan Raspl <raspl@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com><
Signed-off-by: NDavid S. Miller <davem@davemloft.net>