diff options
Diffstat (limited to 'drivers/md/dm-io-tracker.h')
| -rw-r--r-- | drivers/md/dm-io-tracker.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/md/dm-io-tracker.h b/drivers/md/dm-io-tracker.h index 1dcf01f9f066..bdcc6273ebf0 100644 --- a/drivers/md/dm-io-tracker.h +++ b/drivers/md/dm-io-tracker.h @@ -45,6 +45,18 @@ static inline bool dm_iot_idle_for(struct dm_io_tracker *iot, unsigned long j) return r; } +static inline unsigned long dm_iot_idle_time(struct dm_io_tracker *iot) +{ + unsigned long r = 0; + + spin_lock_irq(&iot->lock); + if (!iot->in_flight) + r = jiffies - iot->idle_time; + spin_unlock_irq(&iot->lock); + + return r; +} + static inline void dm_iot_io_begin(struct dm_io_tracker *iot, sector_t len) { spin_lock_irq(&iot->lock); |