diff options
Diffstat (limited to 'block/blk-wbt.h')
| -rw-r--r-- | block/blk-wbt.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/block/blk-wbt.h b/block/blk-wbt.h index 8f485f8e1baf7..65f1de519f67e 100644 --- a/block/blk-wbt.h +++ b/block/blk-wbt.h @@ -21,6 +21,15 @@ enum { WBT_NUM_RWQ = 2, }; +/* + * Enable states. Either off, or on by default (done at init time), + * or on through manual setup in sysfs. + */ +enum { + WBT_STATE_ON_DEFAULT = 1, + WBT_STATE_ON_MANUAL = 2, +}; + static inline void wbt_clear_state(struct blk_issue_stat *stat) { stat->time &= BLK_STAT_TIME_MASK; @@ -61,6 +70,8 @@ struct rq_wb { int scale_step; bool scaled_max; + short enable_state; /* WBT_STATE_* */ + /* * Number of consecutive periods where we don't have enough * information to make a firm scale up/down decision. |