af_unix: get rid of splice_read remnants

	... including the rest of misguided 73ed5d25dc -
the real solution there was to quit unlocking/relocking the
socket.  Unfortunately, the other kludge ("use freezable
sleep in ->recvmsg(); whaddya mean 'somebody might hold
a lock when calling it'?" is not so easily killed.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
1 file changed