pwrite pread need check EINTR?

[jazy333]

like the following snippet:
n = pwrite(fd, slab, size, off);
if (n < size) {
log_error("pwrite fd %d %zu bytes at offset %"PRId64" failed: %s",
fd, size, off, strerror(errno));
return FC_ERROR;
}

when n<size ,pread or pwrite may interrupt by signal ,errno is equal to EINTR,
it should process on writing,not return an error?