diff options
| author | Yu Kuai <yukuai3@huawei.com> | 2022-09-21 17:53:08 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-09-24 08:59:43 -0600 |
| commit | 85496749904016f36b69332f73a1cf3ecfee828f (patch) | |
| tree | 08fc32871c14c22ee1ae11e5819332ef51f42a19 /block/blk-throttle.c | |
| parent | c732a852b419fa057b53657e2daaf9433940391c (diff) | |
blk-throttle: remove THROTL_TG_HAS_IOPS_LIMIT
Currently, "tg->has_rules" and "tg->flags & THROTL_TG_HAS_IOPS_LIMIT"
both try to bypass bios that don't need to be throttled, however, they are
a little redundant and both not perfect:
1) "tg->has_rules" only distinguish read and write, but not iops and bps
limit.
2) "tg->flags & THROTL_TG_HAS_IOPS_LIMIT" only check if iops limit
exist, read and write is not distinguished, and bps limit is not
checked.
tg->has_rules will extended to distinguish bps and iops in the following
patch. There is no need to keep the flag.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20220921095309.1481289-2-yukuai1@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-throttle.c')
| -rw-r--r-- | block/blk-throttle.c | 16 |
1 files changed, 2 insertions, 14 deletions
diff --git a/block/blk-throttle.c b/block/blk-throttle.c index 55f2d985cfbb..a062539d84d0 100644 --- a/block/blk-throttle.c +++ b/block/blk-throttle.c @@ -420,24 +420,12 @@ static void tg_update_has_rules(struct throtl_grp *tg) struct throtl_grp *parent_tg = sq_to_tg(tg->service_queue.parent_sq); struct throtl_data *td = tg->td; int rw; - int has_iops_limit = 0; - - for (rw = READ; rw <= WRITE; rw++) { - unsigned int iops_limit = tg_iops_limit(tg, rw); + for (rw = READ; rw <= WRITE; rw++) tg->has_rules[rw] = (parent_tg && parent_tg->has_rules[rw]) || (td->limit_valid[td->limit_index] && (tg_bps_limit(tg, rw) != U64_MAX || - iops_limit != UINT_MAX)); - - if (iops_limit != UINT_MAX) - has_iops_limit = 1; - } - - if (has_iops_limit) - tg->flags |= THROTL_TG_HAS_IOPS_LIMIT; - else - tg->flags &= ~THROTL_TG_HAS_IOPS_LIMIT; + tg_iops_limit(tg, rw) != UINT_MAX)); } static void throtl_pd_online(struct blkg_policy_data *pd) |