Hi Jens, I ran with your suggestion and DM now sees a ~7% improvement in hipri bio polling with io_uring (using dm-linear on null_blk, IOPS went from 900K to 966K). I'd appreciate it if you could pick up the first patch for 5.19. I'll rebase dm's 5.19 branch on block once it lands. (FYI, this series builds on linux-dm.git's "dm-5.18" branch, and the commits in this series are available in linux-dm.git's "dm-5.19" branch). Thanks, Mike Mike Snitzer (3): block: allow BIOSET_PERCPU_CACHE use from bio_alloc_clone dm: enable BIOSET_PERCPU_CACHE for dm_io bioset dm: conditionally enable BIOSET_PERCPU_CACHE for bio-based dm_io bioset block/bio.c | 56 ++++++++++++++++++++++++++++++++------------------- block/blk.h | 7 ------- drivers/md/dm-table.c | 11 +++++++--- drivers/md/dm.c | 10 ++++----- drivers/md/dm.h | 4 ++-- include/linux/bio.h | 7 +++++++ 6 files changed, 57 insertions(+), 38 deletions(-) -- 2.15.0
