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| author | Vivek Goyal <vgoyal@redhat.com> | 2010-10-01 21:16:38 +0200 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2010-10-01 21:16:38 +0200 |
| commit | 5e901a2b95db709c5e40599ff4df6029be1e2a12 (patch) | |
| tree | e2450a1157c6f9411429fceb9939002d8c0282f8 /block/blk-throttle.c | |
| parent | 3aad5d3ee4e4fce8f4b5bb6ca73342dcade42b33 (diff) | |
| download | lwn-5e901a2b95db709c5e40599ff4df6029be1e2a12.tar.gz lwn-5e901a2b95db709c5e40599ff4df6029be1e2a12.zip | |
blkio-throttle: There is no need to convert jiffies to milli seconds
o Do not convert jiffies to mili seconds as it is not required. Just work
with jiffies and HZ.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'block/blk-throttle.c')
| -rw-r--r-- | block/blk-throttle.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/block/blk-throttle.c b/block/blk-throttle.c index a46700255719..c1bc1b6c887a 100644 --- a/block/blk-throttle.c +++ b/block/blk-throttle.c @@ -439,8 +439,7 @@ static bool tg_with_in_iops_limit(struct throtl_data *td, struct throtl_grp *tg, jiffy_elapsed_rnd = roundup(jiffy_elapsed_rnd, throtl_slice); - io_allowed = (tg->iops[rw] * jiffies_to_msecs(jiffy_elapsed_rnd)) - / MSEC_PER_SEC; + io_allowed = (tg->iops[rw] * jiffy_elapsed_rnd) / HZ; if (tg->io_disp[rw] + 1 <= io_allowed) { if (wait) @@ -476,8 +475,8 @@ static bool tg_with_in_bps_limit(struct throtl_data *td, struct throtl_grp *tg, jiffy_elapsed_rnd = roundup(jiffy_elapsed_rnd, throtl_slice); - tmp = tg->bps[rw] * jiffies_to_msecs(jiffy_elapsed_rnd); - do_div(tmp, MSEC_PER_SEC); + tmp = tg->bps[rw] * jiffy_elapsed_rnd; + do_div(tmp, HZ); bytes_allowed = tmp; if (tg->bytes_disp[rw] + bio->bi_size <= bytes_allowed) { |