damon_call() and damos_walk() can leak memory and/or deadlock when they
race with kdamond terminations.  Fix those.

Changes from RFC v3
(https://lore.kernel.org/20260327142605.4834-1-sj@kernel.org)
- Drop RFC tag.
- Rebase to latest mm-new.
Changes from RFC v2
(https://lore.kernel.org/20260327004952.58266-1-sj@kernel.org)
- Update and wordsmith commit message.
- Add damos_walk() race fix.
Changes from RFC v1
(https://lore.kernel.org/20260326062347.88569-3-sj@kernel.org)
- Clarify damon_call() call condition.
- Init call_controls_obsolete before kdamond_started completion.
- Wordsmith commit message.
- Split out repeat_call_control leak fix from the series.

SeongJae Park (2):
  mm/damon/core: fix damon_call() vs kdamond_fn() exit race
  mm/damon/core: fix damos_walk() vs kdamond_fn() exit race

 include/linux/damon.h |  2 ++
 mm/damon/core.c       | 66 ++++++++++++++++++-------------------------
 2 files changed, 30 insertions(+), 38 deletions(-)


base-commit: 305aff97ab8306284a0aa85f9128403b50c89019
-- 
2.47.3

Forwarding sashiko.dev review status for this thread.

# review url: https://sashiko.dev/#/patchset/20260327233319.3528-1-sj@kernel.org

- [PATCH 1/2] mm/damon/core: fix damon_call() vs kdamond_fn() exit race
  - status: Reviewed
  - review: ISSUES MAY FOUND
- [PATCH 2/2] mm/damon/core: fix damos_walk() vs kdamond_fn() exit race
  - status: Reviewed
  - review: No issues found.

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