> > > > How about updating as below to avoid lossing accuracy if new is less than > > 100? > > > > return div_u64(new * (100 - LAST_AGE_WEIGHT), 100) + > > div_u64(old * LAST_AGE_WEIGHT, 100); > > > > Thanks, > > > > We want to avoid overflow by doing the division first. To keep the accuracy, > how > about updating as below: > > res = div_u64_rem(new, 100, &rem_new) * (100 - LAST_AGE_WEIGHT) > + div_u64_rem(old, 100, &rem_old) * LAST_AGE_WEIGHT; > res += rem_new * (100 - LAST_AGE_WEIGHT) / 100 + rem_old * > LAST_AGE_WEIGHT / 100; > return res; > > Thanks, >
Friendly ping > > > } > > > /* This returns a new age and allocated blocks in ei */ _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
