Re: [PATCH v2 0/5] use refcount+RCU method to implement lockless slab shrink (part 1)

[Qi Zheng <zhengqi.arch@bytedance.com>]

On 2023/8/17 19:23, Qi Zheng wrote:
> Hi all,
> 
> To make reviewing and updating easier, I've chosen to split the previous
> patchset[1] into the following three parts:
> 
> part 1: some cleanups and preparations
> part 2: introduce new APIs and convert all shrinnkers to use these
> part 3: implement lockless slab shrink
> 
> This series is the part 1 and is based on the next-20230815.
> 
> Comments and suggestions are welcome.
> 
> [1]. https://lore.kernel.org/lkml/20230807110936.21819-1-zhengqi.arch@bytedance.com/
> 
> Thanks,
> Qi
> 
> Changlog in part 1 v1 -> part 1 v2:
>   - fix compilation warning in [PATCH 1/5]
>   - rename synchronize_shrinkers() to ttm_pool_synchronize_shrinkers()
>     (pointed by Christian König)
>   - collect Reviewed-by
> 
> Changlog in v4 -> part 1 v1:
>   - split from the previous large patchset
>   - fix comment format in [PATCH v4 01/48] (pointed by Muchun Song)
>   - change to use kzalloc_node() and fix typo in [PATCH v4 44/48]
>     (pointed by Dave Chinner)
>   - collect Reviewed-bys
>   - rebase onto the next-20230815

Hi all,

Any more comments and suggestions for this part 1? Or can this part
be merged first (just some cleanups and preparations)? Or should I
post the part 2 and part 3 first for everyone to review together?

Either one is fine for me. :)

Thanks,
Qi

> 
> Qi Zheng (5):
>    mm: move some shrinker-related function declarations to mm/internal.h
>    mm: vmscan: move shrinker-related code into a separate file
>    mm: shrinker: remove redundant shrinker_rwsem in debugfs operations
>    drm/ttm: introduce pool_shrink_rwsem
>    mm: shrinker: add a secondary array for shrinker_info::{map,
>      nr_deferred}
> 
>   drivers/gpu/drm/ttm/ttm_pool.c |  17 +-
>   include/linux/memcontrol.h     |  12 +-
>   include/linux/shrinker.h       |  37 +-
>   mm/Makefile                    |   4 +-
>   mm/internal.h                  |  28 ++
>   mm/shrinker.c                  | 751 +++++++++++++++++++++++++++++++++
>   mm/shrinker_debug.c            |  18 +-
>   mm/vmscan.c                    | 701 ------------------------------
>   8 files changed, 818 insertions(+), 750 deletions(-)
>   create mode 100644 mm/shrinker.c
>