From: Yu Kuai <yukuai3@xxxxxxxxxx> Changes in v9: - renaming the flag BIO_THROTTLED to BIO_BPS_THROTTLED, and always apply iops limit in path 1; - add tag for patch 4 Changes in v8: - use a new solution in patch 1 - move cleanups to a separate patchset - rename bytes/io_skipped to carryover_bytes/ios in patch 4 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. 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/ v7: https://lore.kernel.org/all/20220802140415.2960284-1-yukuai1@xxxxxxxxxxxxxxx/ v8: https://lore.kernel.org/all/20220823033130.874230-1-yukuai1@xxxxxxxxxxxxxxx/ Yu Kuai (4): 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 block/bio.c | 2 - block/blk-throttle.c | 137 +++++++++++++++++++++++++------------- block/blk-throttle.h | 11 ++- include/linux/bio.h | 2 +- include/linux/blk_types.h | 2 +- 5 files changed, 104 insertions(+), 50 deletions(-) -- 2.31.1
