From: Yu Kuai <yukuai3@xxxxxxxxxx> 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. With this patchset, biowon't be bypassedd if: 1) Bio is read/write, and corresponding read/write iops limit exist. 2) If corresponding iops limit doesn't exist, corresponding bps limit exist and bio is not throttled before. Yu Kuai (2): blk-throttle: remove THROTL_TG_HAS_IOPS_LIMIT blk-throttle: improve bypassing bios checkings block/blk-throttle.c | 21 +++++++-------------- block/blk-throttle.h | 28 +++++++++++++++++++--------- 2 files changed, 26 insertions(+), 23 deletions(-) -- 2.31.1
