From: Yu Kuai <yukuai3@xxxxxxxxxx> Changes in v7: - add patch 5 to improve handling of re-entered bio for bps limit - as suggested by Tejun, add some comments - sdd some Acked tag by Tejun Changes in v6: - rename parameter in patch 3 - add comments and reviewed tag for patch 4 Changes in v5: - add comments in patch 4 - clear bytes/io_skipped in throtl_start_new_slice_with_credit() in patch 4 - and cleanup patches 5-8 Changes in v4: - add reviewed-by tag for patch 1 - add patch 2,3 - use a different way to fix io hung in patch 4 Changes in v3: - fix a check in patch 1 - fix link err in patch 2 on 32-bit platform - handle overflow in patch 2 Changes in v2: - use a new solution suggested by Ming - change the title of patch 1 - add patch 2 Patch 1 fix that blk-throttle can't work if multiple bios are throttle. Patch 2 fix overflow while calculating wait time. Patch 3,4 fix io hung due to configuration updates. Patch 5 improve handling of re-entered bio for bps limit. Patch 6-9 are cleanup patches, there are no functional changes, just some places that I think can be optimized during code review. Previous version: v1: https://lore.kernel.org/all/20220517134909.2910251-1-yukuai3@xxxxxxxxxx/ v2: https://lore.kernel.org/all/20220518072751.1188163-1-yukuai3@xxxxxxxxxx/ v3: https://lore.kernel.org/all/20220519085811.879097-1-yukuai3@xxxxxxxxxx/ v4: https://lore.kernel.org/all/20220523082633.2324980-1-yukuai3@xxxxxxxxxx/ v5: https://lore.kernel.org/all/20220528064330.3471000-1-yukuai3@xxxxxxxxxx/ v6: https://lore.kernel.org/all/20220701093441.885741-1-yukuai1@xxxxxxxxxxxxxxx/ Yu Kuai (9): blk-throttle: fix that io throttle can only work for single bio blk-throttle: prevent overflow while calculating wait time blk-throttle: factor out code to calculate ios/bytes_allowed blk-throttle: fix io hung due to configuration updates blk-throttle: improve handling of re-entered bio for bps limit blk-throttle: use 'READ/WRITE' instead of '0/1' blk-throttle: calling throtl_dequeue/enqueue_tg in pairs blk-throttle: cleanup tg_update_disptime() blk-throttle: clean up flag 'THROTL_TG_PENDING' block/blk-throttle.c | 175 ++++++++++++++++++++++++++++++------------- block/blk-throttle.h | 20 ++++- 2 files changed, 139 insertions(+), 56 deletions(-) -- 2.31.1
