cache_sector
bio->bi_iter.bi_sector = cache_sector(wc, e);
sector_t start_cache_sec = cache_sector(wc, e);
from.sector = cache_sector(wc, e);
if (expected_sector != (sector_t)-1 && unlikely(cache_sector(wc, e) != expected_sector))
if (expected_sector != (sector_t)-1 && unlikely(cache_sector(wc, e) != expected_sector))