diff options
Diffstat (limited to 'module/zfs')
| -rw-r--r-- | module/zfs/spa_misc.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/module/zfs/spa_misc.c b/module/zfs/spa_misc.c index 39a1d7d6a..831f83b33 100644 --- a/module/zfs/spa_misc.c +++ b/module/zfs/spa_misc.c @@ -1624,11 +1624,19 @@ spa_freeze_txg(spa_t *spa) return (spa->spa_freeze_txg); } -/* ARGSUSED */ +/* + * Return the inflated asize for a logical write in bytes. This is used by the + * DMU to calculate the space a logical write will require on disk. + * If lsize is smaller than the largest physical block size allocatable on this + * pool we use its value instead, since the write will end up using the whole + * block anyway. + */ uint64_t spa_get_worst_case_asize(spa_t *spa, uint64_t lsize) { - return (lsize * spa_asize_inflation); + if (lsize == 0) + return (0); /* No inflation needed */ + return (MAX(lsize, 1 << spa->spa_max_ashift) * spa_asize_inflation); } /* |