248     char buf[WRITE_SIZE];  in rk29_fwrite()
278         sz = pread(fd, buf, WRITE_SIZE, offset);  in rk29_fwrite()
279         if (sz < WRITE_SIZE)  in rk29_fwrite()
281         count = min(end, offset + WRITE_SIZE) - begin;  in rk29_fwrite()
283         sz = pwrite(fd, buf, WRITE_SIZE, offset);  in rk29_fwrite()
284         if (sz < WRITE_SIZE)  in rk29_fwrite()
287         offset += WRITE_SIZE;  in rk29_fwrite()
290     for (; offset < (end & ~WRITE_MASK); offset += WRITE_SIZE) {  in rk29_fwrite()
291         sz = pwrite(fd, p, WRITE_SIZE, offset);  in rk29_fwrite()
292         if (sz < WRITE_SIZE)  in rk29_fwrite()
294         count += WRITE_SIZE;  in rk29_fwrite()
295         p += WRITE_SIZE;  in rk29_fwrite()
300         sz = pread(fd, buf, WRITE_SIZE, offset);  in rk29_fwrite()
301         if (sz < WRITE_SIZE)  in rk29_fwrite()
304         sz = pwrite(fd, buf, WRITE_SIZE, offset);  in rk29_fwrite()
305         if (sz < WRITE_SIZE)  in rk29_fwrite()