diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-throttle.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/block/blk-throttle.c b/block/blk-throttle.c index 11713ed..a467002 100644 --- a/block/blk-throttle.c +++ b/block/blk-throttle.c @@ -378,7 +378,8 @@ throtl_slice_used(struct throtl_data *td, struct throtl_grp *tg, bool rw) static inline void throtl_trim_slice(struct throtl_data *td, struct throtl_grp *tg, bool rw) { - unsigned long nr_slices, bytes_trim, time_elapsed, io_trim; + unsigned long nr_slices, time_elapsed, io_trim; + u64 bytes_trim, tmp; BUG_ON(time_before(tg->slice_end[rw], tg->slice_start[rw])); @@ -396,8 +397,10 @@ throtl_trim_slice(struct throtl_data *td, struct throtl_grp *tg, bool rw) if (!nr_slices) return; + tmp = tg->bps[rw] * throtl_slice * nr_slices; + do_div(tmp, HZ); + bytes_trim = tmp; - bytes_trim = (tg->bps[rw] * throtl_slice * nr_slices)/HZ; io_trim = (tg->iops[rw] * throtl_slice * nr_slices)/HZ; if (!bytes_trim && !io_trim) @@ -415,7 +418,7 @@ throtl_trim_slice(struct throtl_data *td, struct throtl_grp *tg, bool rw) tg->slice_start[rw] += nr_slices * throtl_slice; - throtl_log_tg(td, tg, "[%c] trim slice nr=%lu bytes=%lu io=%lu" + throtl_log_tg(td, tg, "[%c] trim slice nr=%lu bytes=%llu io=%lu" " start=%lu end=%lu jiffies=%lu", rw == READ ? 'R' : 'W', nr_slices, bytes_trim, io_trim, tg->slice_start[rw], tg->slice_end[rw], jiffies); @@ -462,7 +465,7 @@ static bool tg_with_in_bps_limit(struct throtl_data *td, struct throtl_grp *tg, struct bio *bio, unsigned long *wait) { bool rw = bio_data_dir(bio); - u64 bytes_allowed, extra_bytes; + u64 bytes_allowed, extra_bytes, tmp; unsigned long jiffy_elapsed, jiffy_wait, jiffy_elapsed_rnd; jiffy_elapsed = jiffy_elapsed_rnd = jiffies - tg->slice_start[rw]; @@ -473,8 +476,9 @@ static bool tg_with_in_bps_limit(struct throtl_data *td, struct throtl_grp *tg, jiffy_elapsed_rnd = roundup(jiffy_elapsed_rnd, throtl_slice); - bytes_allowed = (tg->bps[rw] * jiffies_to_msecs(jiffy_elapsed_rnd)) - / MSEC_PER_SEC; + tmp = tg->bps[rw] * jiffies_to_msecs(jiffy_elapsed_rnd); + do_div(tmp, MSEC_PER_SEC); + bytes_allowed = tmp; if (tg->bytes_disp[rw] + bio->bi_size <= bytes_allowed) { if (wait) |
