PIPE_SIZE
ctx->c_bufsiz = PIPE_SIZE;
#define MINPIPESIZE (PIPE_SIZE/3)
error = pipe_buffer_realloc(cpipe, PIPE_SIZE);
if (uio->uio_resid > PIPE_SIZE &&
wpipe->pipe_buffer.size <= PIPE_SIZE &&
if (size > PIPE_SIZE)
#ifndef PIPE_SIZE