[PATCH] block/bfq: the delta_from_first should be ns rather than us
From: liubaozhu <hidden>
Date: 2021-07-21 06:32:02
Also in:
lkml
Subsystem:
bfq i/o scheduler, block layer, the rest · Maintainers:
Yu Kuai, Jens Axboe, Linus Torvalds
In the block/bfq-iosched.c,the function bfq_update_peak_rate(), bfqd->delta_from_first = now_ns - bfqd->first_dispatch, according to the subtraction operation here,now_ns is ns, and bfqd->first_dispatch is also ns,so bfqd->delta_from_first should be ns. Signed-off-by: liubaozhu <redacted> --- block/bfq-iosched.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/bfq-iosched.h b/block/bfq-iosched.h
index 99c2a3cb0..7cf4fc8c3 100644
--- a/block/bfq-iosched.h
+++ b/block/bfq-iosched.h@@ -632,7 +632,7 @@ struct bfq_data { u64 tot_sectors_dispatched; /* max rq size seen during current observation interval (sectors) */ u32 last_rq_max_size; - /* time elapsed from first dispatch in current observ. interval (us) */ + /* time elapsed from first dispatch in current observ. interval (ns) */ u64 delta_from_first; /* * Current estimate of the device peak rate, measured in
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2.20.1