diff options
| author | Yu Kuai <yukuai3@huawei.com> | 2023-05-27 03:06:42 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-06-26 17:53:36 +0200 |
| commit | 06257fda83ebfd1c33fb992e41dba7be4e1184d4 (patch) | |
| tree | ed347de59d7caaee9d84c9c5ebd75a7011e057fb /block/blk-wbt.c | |
| parent | blk-wbt: remove dead code to handle wbt enable/disable with io inflight (diff) | |
| download | linux-06257fda83ebfd1c33fb992e41dba7be4e1184d4.tar.xz linux-06257fda83ebfd1c33fb992e41dba7be4e1184d4.zip | |
blk-wbt: cleanup rwb_enabled() and wbt_disabled()
'wb_normal' will set to 0 if 'min_lat_nsec' is 0, and 'min_lat_nsec' can
only be set to 0 through sysfs configuration where 'WBT_STATE_OFF_MANUAL'
is set together, in the meantime, they can only be cleared together
through sysfs afterwards. Hence 'wb_normal != 0' is the same as
'rwb->enable_state != WBT_STATE_OFF_MANUAL'.
The code is redundan, hence replace the checking of 'wb_normal' to
'enable_state' in rwb_enabled() and reuse rwb_enabled() for
wbt_disabled().
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20230527010644.647900-4-yukuai1@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-wbt.c')
| -rw-r--r-- | block/blk-wbt.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/block/blk-wbt.c b/block/blk-wbt.c index 21bbeb31a444..9f7c99c025f3 100644 --- a/block/blk-wbt.c +++ b/block/blk-wbt.c @@ -146,7 +146,7 @@ enum { static inline bool rwb_enabled(struct rq_wb *rwb) { return rwb && rwb->enable_state != WBT_STATE_OFF_DEFAULT && - rwb->wb_normal != 0; + rwb->enable_state != WBT_STATE_OFF_MANUAL; } static void wb_timestamp(struct rq_wb *rwb, unsigned long *var) @@ -494,8 +494,7 @@ bool wbt_disabled(struct request_queue *q) { struct rq_qos *rqos = wbt_rq_qos(q); - return !rqos || RQWB(rqos)->enable_state == WBT_STATE_OFF_DEFAULT || - RQWB(rqos)->enable_state == WBT_STATE_OFF_MANUAL; + return !rqos || !rwb_enabled(RQWB(rqos)); } u64 wbt_get_min_lat(struct request_queue *q) |