diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/f2fs/extent_cache.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/fs/f2fs/extent_cache.c b/fs/f2fs/extent_cache.c index 1daf8c88c09b..c8efc957c230 100644 --- a/fs/f2fs/extent_cache.c +++ b/fs/f2fs/extent_cache.c @@ -874,11 +874,18 @@ unlock_out: static unsigned long long __calculate_block_age(unsigned long long new, unsigned long long old) { - unsigned long long diff; + unsigned int rem_old, rem_new; + unsigned long long res; - diff = (new >= old) ? new - (new - old) : new + (old - new); + res = div_u64_rem(new, 100, &rem_new) * (100 - LAST_AGE_WEIGHT) + + div_u64_rem(old, 100, &rem_old) * LAST_AGE_WEIGHT; - return div_u64(diff * LAST_AGE_WEIGHT, 100); + if (rem_new) + res += rem_new * (100 - LAST_AGE_WEIGHT) / 100; + if (rem_old) + res += rem_old * LAST_AGE_WEIGHT / 100; + + return res; } /* This returns a new age and allocated blocks in ei */ |