block: don't try to throttle split bio if iops limit isn't set

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We need to throttle split bio in case of IOPS limit even though the
split bio has been marked as BIO_THROTTLED since block layer
accounts split bio actually.

If only throughput throttle is setup, no need to throttle any more
if BIO_THROTTLED is set since we have accounted & considered the
whole bio bytes already.

Add one flag of THROTL_TG_HAS_IOPS_LIMIT for serving this purpose.

Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20220216044514.2903784-8-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Ming Lei 2022-02-16 12:45:13 +08:00 • committed by Jens Axboe

parent 9f5ede3c01

commit 5a93b6027e

2 changed files with 25 additions and 7 deletions

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21

block/blk-throttle.c

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11

block/blk-throttle.h

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