MAX_EXPECTED_BUFFER
(type == PT_EAGER ? MAX_EAGER_BUFFER : MAX_EXPECTED_BUFFER))
#define MAX_EXPECTED_PAGES (MAX_EXPECTED_BUFFER / PAGE_SIZE)
if (bufsize > MAX_EXPECTED_BUFFER)
MAX_EXPECTED_BUFFER >>
if (bufsize > MAX_EXPECTED_BUFFER)
MAX_EXPECTED_BUFFER >>