[dm-devel] [PATCH 0/8] dm: io accounting & polling improvement

[Mike Snitzer]

On Tue, Apr 12 2022 at  4:56P -0400,
Ming Lei <ming.lei at redhat.com> wrote:

> Hello Guys,
> 
> The 1st patch adds bdev based io accounting interface.
> 
> The 2nd ~ 5th patches improves dm's io accounting & split, meantime
> fixes kernel panic on dm-zone.
> 
> The other patches improves io polling & dm io reference handling.
> 
> 
> Ming Lei (8):
>   block: replace disk based account with bdev's
>   dm: don't pass bio to __dm_start_io_acct and dm_end_io_acct
>   dm: pass 'dm_io' instance to dm_io_acct directly
>   dm: switch to bdev based io accounting interface
>   dm: always setup ->orig_bio in alloc_io
>   dm: don't grab target io reference in dm_zone_map_bio
>   dm: improve target io referencing
>   dm: put all polled io into one single list
> 
>  block/blk-core.c              |  15 +--
>  drivers/block/zram/zram_drv.c |   5 +-
>  drivers/md/dm-core.h          |  17 ++-
>  drivers/md/dm-zone.c          |  10 --
>  drivers/md/dm.c               | 190 +++++++++++++++++++---------------
>  include/linux/blkdev.h        |   7 +-
>  6 files changed, 131 insertions(+), 113 deletions(-)
> 
> -- 
> 2.31.1
> 

I'll review this closely but, a couple weeks ago, I queued up quite a
lot of conflicting changes for 5.19 here:

https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git/log/?h=dm-5.19