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

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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@xxxxxxxxxxxxx/

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




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