Hi, All the changes from this patchset are available here: https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git/log/?h=dm-5.18 This work is based on Jens' for-5.18/block For the linux-block crowd, I'm spamming you purely to seek review of the last patch in this patchset (but welcome review of the entire set if you're willing). Given all the DM changes that precede the last block patch I'd appreciate review so it can be merged for 5.18 via linux-dm.git. DM is the only consumer of the recently added bio_start_io_acct_time that the last patch enhances and renames to bio_start_io_acct_remapped This patchset's primary purpose is to add the dm_submit_bio_remap() interface to improve the bio-based IO accounting for DM targets that take ownership of bios and use their own workqueues to process/remap and later submit the bios. Motivation is to fix the relatively useless nature of dm-crypt's buffered IO stats. DM core shouldn't immediately start IO accounting for bios that dm-crypt goes on to queue in workqueues. The IO should only have its IO started once submitted. Otherwise the iostats for dm-crypt just looks like an upfront flood of IO but then offer little indication that anything is happening. Given dm-crypt's cpu intensive nature it takes time to complete IO but unless you look at the underlying devices' iostats you wouldn't see it occurring. Mike Mike Snitzer (14): dm: rename split functions dm: fold __clone_and_map_data_bio into __split_and_process_bio dm: refactor dm_split_and_process_bio a bit dm: reduce code duplication in __map_bio dm: remove impossible BUG_ON in __send_empty_flush dm: remove unused mapped_device argument from free_tio dm: remove code only needed before submit_bio recursion dm: record old_sector in dm_target_io before calling map function dm: prep for following changes dm: add dm_submit_bio_remap interface dm crypt: use dm_submit_bio_remap dm delay: dm_submit_bio_remap dm: improve correctness and efficiency of bio-based IO accounting block: add bio_start_io_acct_remapped for the benefit of DM block/blk-core.c | 24 ++--- drivers/md/dm-core.h | 4 +- drivers/md/dm-crypt.c | 7 +- drivers/md/dm-delay.c | 3 +- drivers/md/dm.c | 224 ++++++++++++++++++++++-------------------- include/linux/blkdev.h | 16 ++- include/linux/device-mapper.h | 7 ++ 7 files changed, 156 insertions(+), 129 deletions(-) -- 2.15.0 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel
