PIPE_WANTW
if (fpipe->pipe_state & PIPE_WANTW)
if ((cpipe->pipe_state & PIPE_WANTW)) {
cpipe->pipe_state &= ~PIPE_WANTW;
wpipe->pipe_state |= PIPE_WANTW;
wpipe->pipe_state |= PIPE_WANTW;
wpipe->pipe_state |= PIPE_WANTW;
wpipe->pipe_state |= PIPE_WANTW;
wpipe->pipe_state |= PIPE_WANTW;
rpipe->pipe_state &= ~PIPE_WANTW;
if (rpipe->pipe_state & PIPE_WANTW) {
rpipe->pipe_state &= ~PIPE_WANTW;
rpipe->pipe_state &= ~(PIPE_WANT|PIPE_WANTW);
if (rpipe->pipe_state & PIPE_WANTW) {
rpipe->pipe_state &= ~PIPE_WANTW;