2382 	unsigned zerofrom, offset, len;  in cont_expand_zero()  local
2389 		zerofrom = curpos & ~PAGE_MASK;  in cont_expand_zero()
2390 		if (zerofrom & (blocksize-1)) {  in cont_expand_zero()
2394 		len = PAGE_SIZE - zerofrom;  in cont_expand_zero()
2400 		zero_user(page, zerofrom, len);  in cont_expand_zero()
2418 		zerofrom = curpos & ~PAGE_MASK;  in cont_expand_zero()
2420 		if (offset <= zerofrom) {  in cont_expand_zero()
2423 		if (zerofrom & (blocksize-1)) {  in cont_expand_zero()
2427 		len = offset - zerofrom;  in cont_expand_zero()
2433 		zero_user(page, zerofrom, len);  in cont_expand_zero()
2456 	unsigned int zerofrom;  in cont_write_begin()  local
2463 	zerofrom = *bytes & ~PAGE_MASK;  in cont_write_begin()
2464 	if (pos+len > *bytes && zerofrom & (blocksize-1)) {  in cont_write_begin()