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| author | Jens Axboe <axboe@fb.com> | 2016-11-11 08:23:53 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-11-11 16:18:29 -0700 |
| commit | 382cf633edcb0371a6dd506653014897c4ac2a4d (patch) | |
| tree | 85e190ec6239a4b57f72eb96c034a78279ba8546 /block/blk-wbt.c | |
| parent | 8054b89f8fca75d514965ee627a15b47020d2053 (diff) | |
| download | blackbird-obmc-linux-382cf633edcb0371a6dd506653014897c4ac2a4d.tar.gz blackbird-obmc-linux-382cf633edcb0371a6dd506653014897c4ac2a4d.zip | |
blk-wbt: use BLK_STAT_{READ,WRITE} instead of 0/1
Since we have proper enums for the stats directions, use them.
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-wbt.c')
| -rw-r--r-- | block/blk-wbt.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/block/blk-wbt.c b/block/blk-wbt.c index f6ec7e587fa6..20712f0db6ea 100644 --- a/block/blk-wbt.c +++ b/block/blk-wbt.c @@ -255,8 +255,8 @@ static bool inline stat_sample_valid(struct blk_rq_stat *stat) * that it's writes impacting us, and not just some sole read on * a device that is in a lower power state. */ - return stat[0].nr_samples >= 1 && - stat[1].nr_samples >= RWB_MIN_WRITE_SAMPLES; + return stat[BLK_STAT_READ].nr_samples >= 1 && + stat[BLK_STAT_WRITE].nr_samples >= RWB_MIN_WRITE_SAMPLES; } static u64 rwb_sync_issue_lat(struct rq_wb *rwb) @@ -293,7 +293,7 @@ static int __latency_exceeded(struct rq_wb *rwb, struct blk_rq_stat *stat) */ thislat = rwb_sync_issue_lat(rwb); if (thislat > rwb->cur_win_nsec || - (thislat > rwb->min_lat_nsec && !stat[0].nr_samples)) { + (thislat > rwb->min_lat_nsec && !stat[BLK_STAT_READ].nr_samples)) { trace_wbt_lat(bdi, thislat); return LAT_EXCEEDED; } @@ -308,7 +308,7 @@ static int __latency_exceeded(struct rq_wb *rwb, struct blk_rq_stat *stat) * waited or still has writes in flights, consider us doing * just writes as well. */ - if ((stat[1].nr_samples && blk_stat_is_current(stat)) || + if ((stat[BLK_STAT_WRITE].nr_samples && blk_stat_is_current(stat)) || wb_recent_wait(rwb) || wbt_inflight(rwb)) return LAT_UNKNOWN_WRITES; return LAT_UNKNOWN; @@ -317,8 +317,8 @@ static int __latency_exceeded(struct rq_wb *rwb, struct blk_rq_stat *stat) /* * If the 'min' latency exceeds our target, step down. */ - if (stat[0].min > rwb->min_lat_nsec) { - trace_wbt_lat(bdi, stat[0].min); + if (stat[BLK_STAT_READ].min > rwb->min_lat_nsec) { + trace_wbt_lat(bdi, stat[BLK_STAT_READ].min); trace_wbt_stat(bdi, stat); return LAT_EXCEEDED; } |
