struct bio **bio, int mirror_num,
unsigned long *bio_flags, int rw)
{
- u64 start;
+ u64 start = 0;
u64 end = 0;
u64 page_start;
int index;
- int first_index;
+ int first_index = 0;
for (index = 0; index < nr_pages; index++) {
page_start = page_offset(pages[index]);