Also change dm_io_complete() to use bio_clear_polled() so that it clears both REQ_POLLED and BIO_PERCPU_CACHE if the bio is requeued due to BLK_STS_DM_REQUEUE. Only io_uring benefits from using BIOSET_PERCPU_CACHE, it is only safe to use in non-interrupt context but io_uring's completions are all in process context. This change improves DM's hipri bio polling performance by ~7%. Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx> --- drivers/md/dm.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index a2e80c376827..06f3720a190b 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -899,9 +899,9 @@ static void dm_io_complete(struct dm_io *io) /* * Upper layer won't help us poll split bio, io->orig_bio * may only reflect a subset of the pre-split original, - * so clear REQ_POLLED in case of requeue + * so clear REQ_POLLED and BIO_PERCPU_CACHE on requeue. */ - bio->bi_opf &= ~REQ_POLLED; + bio_clear_polled(bio); return; } @@ -3014,7 +3014,7 @@ struct dm_md_mempools *dm_alloc_md_mempools(struct mapped_device *md, enum dm_qu pool_size = max(dm_get_reserved_bio_based_ios(), min_pool_size); front_pad = roundup(per_io_data_size, __alignof__(struct dm_target_io)) + DM_TARGET_IO_BIO_OFFSET; io_front_pad = roundup(per_io_data_size, __alignof__(struct dm_io)) + DM_IO_BIO_OFFSET; - ret = bioset_init(&pools->io_bs, pool_size, io_front_pad, 0); + ret = bioset_init(&pools->io_bs, pool_size, io_front_pad, BIOSET_PERCPU_CACHE); if (ret) goto out; if (integrity && bioset_integrity_create(&pools->io_bs, pool_size)) -- 2.15.0 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel
