diff options
Diffstat (limited to 'block/blk-iocost.c')
| -rw-r--r-- | block/blk-iocost.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/block/blk-iocost.c b/block/blk-iocost.c index bbf30bb06c07..c0499c294da9 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -287,10 +287,7 @@ enum { MIN_DELAY = 250, MAX_DELAY = 250 * USEC_PER_MSEC, - /* - * Halve debts if total usage keeps staying under 25% w/o any shortages - * for over 100ms. - */ + /* halve debts if total usage keeps staying under 25% for over 100ms */ DEBT_BUSY_USAGE_PCT = 25, DEBT_REDUCTION_IDLE_DUR = 100 * USEC_PER_MSEC, @@ -1990,9 +1987,9 @@ static void transfer_surpluses(struct list_head *surpluses, struct ioc_now *now) * sufficiently idle for a while, the debts are halved. */ static void ioc_forgive_debts(struct ioc *ioc, u64 usage_us_sum, int nr_debtors, - int nr_shortages, struct ioc_now *now) + struct ioc_now *now) { - if (nr_shortages || + if (ioc->busy_level < 0 || div64_u64(100 * usage_us_sum, now->now - ioc->period_at) >= DEBT_BUSY_USAGE_PCT) ioc->debt_busy_at = now->now; @@ -2205,8 +2202,6 @@ static void ioc_timer_fn(struct timer_list *timer) list_for_each_entry_safe(iocg, tiocg, &surpluses, surplus_list) list_del_init(&iocg->surplus_list); - ioc_forgive_debts(ioc, usage_us_sum, nr_debtors, nr_shortages, &now); - /* * If q is getting clogged or we're missing too much, we're issuing * too much IO and should lower vtime rate. If we're not missing @@ -2301,6 +2296,8 @@ static void ioc_timer_fn(struct timer_list *timer) ioc_refresh_params(ioc, false); + ioc_forgive_debts(ioc, usage_us_sum, nr_debtors, &now); + /* * This period is done. Move onto the next one. If nothing's * going on with the device, stop the timer. |