+ mm-damon-core-destroy-targets-when-kdamond_fn-finish.patch added to mm-new branch

+ mm-damon-core-destroy-targets-when-kdamond_fn-finish.patch added to mm-new branch

[Andrew Morton]

The patch titled
     Subject: mm/damon/core: destroy targets when kdamond_fn() finish
has been added to the -mm mm-new branch.  Its filename is
     mm-damon-core-destroy-targets-when-kdamond_fn-finish.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-core-destroy-targets-when-kdamond_fn-finish.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews.  Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.

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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: SeongJae Park <sj@kernel.org>
Subject: mm/damon/core: destroy targets when kdamond_fn() finish
Date: Sat, 12 Jul 2025 12:50:14 -0700

When kdamond_fn() completes, the targets are kept.  Those are kept to let
callers do additional cleanups if they need.  There are no such additional
cleanups though.  DAMON sysfs interface deallocates those in
before_terminate() callback, to reduce unnecessary memory usage, for
[f]vaddr use case.  Just destroy the targets for every case in the core
layer.  This saves more memory and simplifies the logic.

Link: https://lkml.kernel.org/r/20250712195016.151108-13-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/damon/core.c |    1 +
 1 file changed, 1 insertion(+)

--- a/mm/damon/core.c~mm-damon-core-destroy-targets-when-kdamond_fn-finish
+++ a/mm/damon/core.c
@@ -2657,6 +2657,7 @@ done:
 		running_exclusive_ctxs = false;
 	mutex_unlock(&damon_lock);
 
+	damon_destroy_targets(ctx);
 	return 0;
 }
 
_

Patches currently in -mm which might be from sj@kernel.org are

selftests-damon-add-drgn-script-for-extracting-damon-status.patch
selftests-damon-_damon_sysfs-set-kdamondpid-in-start.patch
selftests-damon-add-python-and-drgn-based-damon-sysfs-test.patch
selftests-damon-sysfspy-test-monitoring-attribute-parameters.patch
selftests-damon-sysfspy-test-adaptive-targets-parameter.patch
selftests-damon-sysfspy-test-damos-schemes-parameters-setup.patch
mm-damon-add-trace-event-for-auto-tuned-monitoring-intervals.patch
mm-damon-add-trace-event-for-effective-size-quota.patch
mm-damon-add-trace-event-for-effective-size-quota-fix.patch
mm-damon-add-trace-event-for-effective-size-quota-fix-2.patch
samples-damon-wsse-fix-boot-time-enable-handling.patch
samples-damon-prcl-fix-boot-time-enable-crash.patch
samples-damon-mtier-support-boot-time-enable-setup.patch
mm-damon-reclaim-reset-enabled-when-damon-start-failed.patch
mm-damon-lru_sort-reset-enabled-when-damon-start-failed.patch
mm-damon-reclaim-use-parameter-context-correctly.patch
samples-damon-wsse-rename-to-have-damon_sample_-prefix.patch
samples-damon-prcl-rename-to-have-damon_sample_-prefix.patch
samples-damon-mtier-rename-to-have-damon_sample_-prefix.patch
mm-damon-sysfs-use-damon-core-api-damon_is_running.patch
mm-damon-sysfs-dont-hold-kdamond_lock-in-before_terminate.patch
docs-mm-damon-maintainer-profile-update-for-mm-new-tree.patch
mm-damon-add-struct-damos_migrate_dests.patch
mm-damon-core-add-damos-migrate_dests-field.patch
mm-damon-sysfs-schemes-implement-damos-action-destinations-directory.patch
mm-damon-sysfs-schemes-set-damos-migrate_dests.patch
docs-abi-damon-document-schemes-dests-directory.patch
docs-admin-guide-mm-damon-usage-document-dests-directory.patch
mm-damon-accept-parallel-damon_call-requests.patch
mm-damon-core-introduce-repeat-mode-damon_call.patch
mm-damon-stat-use-damon_call-repeat-mode-instead-of-damon_callback.patch
mm-damon-reclaim-use-damon_call-repeat-mode-instead-of-damon_callback.patch
mm-damon-lru_sort-use-damon_call-repeat-mode-instead-of-damon_callback.patch
samples-damon-prcl-use-damon_call-repeat-mode-instead-of-damon_callback.patch
samples-damon-wsse-use-damon_call-repeat-mode-instead-of-damon_callback.patch
mm-damon-core-do-not-call-opscleanup-when-destroying-targets.patch
mm-damon-core-add-cleanup_target-ops-callback.patch
mm-damon-vaddr-put-pid-in-cleanup_target.patch
mm-damon-sysfs-remove-damon_sysfs_destroy_targets.patch
mm-damon-core-destroy-targets-when-kdamond_fn-finish.patch
mm-damon-sysfs-remove-damon_sysfs_before_terminate.patch
mm-damon-core-remove-damon_callback.patch