+ mm-damon-core-put-ops-handled-filters-to-damos-ops_filters.patch added to mm-unstable branch

+ mm-damon-core-put-ops-handled-filters-to-damos-ops_filters.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm/damon/core: put ops-handled filters to damos->ops_filters
has been added to the -mm mm-unstable branch.  Its filename is
     mm-damon-core-put-ops-handled-filters-to-damos-ops_filters.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-put-ops-handled-filters-to-damos-ops_filters.patch

This patch will later appear in the mm-unstable 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: put ops-handled filters to damos->ops_filters
Date: Tue, 4 Mar 2025 13:19:08 -0800

damos->ops_filters has introduced to be used for all operations layer
handled filters.  But DAMON kernel API callers can put any type of DAMOS
filters to any of damos->filters and damos->ops_filters.  DAMON user-space
ABI users have no way to use ->ops_filters at all.  Update
damos_add_filter(), which should be used by API callers to install DAMOS
filters, to add filters to ->filters and ->ops_filters depending on their
handling layer.  The change forces both API callers and ABI users to use
proper lists since ABI users use the API internally.

Link: https://lkml.kernel.org/r/20250304211913.53574-5-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/damon/core.c |   17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

--- a/mm/damon/core.c~mm-damon-core-put-ops-handled-filters-to-damos-ops_filters
+++ a/mm/damon/core.c
@@ -281,9 +281,24 @@ struct damos_filter *damos_new_filter(en
 	return filter;
 }
 
+static bool damos_filter_for_ops(enum damos_filter_type type)
+{
+	switch (type) {
+	case DAMOS_FILTER_TYPE_ADDR:
+	case DAMOS_FILTER_TYPE_TARGET:
+		return false;
+	default:
+		break;
+	}
+	return true;
+}
+
 void damos_add_filter(struct damos *s, struct damos_filter *f)
 {
-	list_add_tail(&f->list, &s->filters);
+	if (damos_filter_for_ops(f->type))
+		list_add_tail(&f->list, &s->ops_filters);
+	else
+		list_add_tail(&f->list, &s->filters);
 }
 
 static void damos_del_filter(struct damos_filter *f)
_

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

selftests-damon-damos_quota_goal-handle-minimum-quota-that-cannot-be-further-reduced.patch
selftests-damon-damos_quota-make-real-expectation-of-quota-exceeds.patch
selftests-damon-damon_nr_regions-set-ops-update-for-merge-results-check-to-100ms.patch
selftests-damon-damon_nr_regions-sort-collected-regiosn-before-checking-with-min-max-boundaries.patch
mm-damon-respect-core-layer-filters-allowance-decision-on-ops-layer.patch
mm-damon-core-initialize-damos-walk_completed-in-damon_new_scheme.patch
mm-madvise-split-out-mmap-locking-operations-for-madvise.patch
mm-madvise-split-out-madvise-input-validity-check.patch
mm-madvise-split-out-madvise-behavior-execution.patch
mm-madvise-remove-redundant-mmap_lock-operations-from-process_madvise.patch
mm-damon-avoid-applying-damos-action-to-same-entity-multiple-times.patch
mm-damon-core-unset-damos-walk_completed-after-confimed-set.patch
mm-damon-core-do-not-call-damos_walk_control-walk-if-walk-is-completed.patch
mm-damon-core-do-damos-walking-in-entire-regions-granularity.patch
mm-damon-introduce-damos-filter-type-hugepage_size-fix.patch
docs-mm-damon-design-fix-typo-on-damos-filters-usage-doc-link.patch
docs-mm-damon-design-document-hugepage_size-filter.patch
docs-damon-move-damos-filter-type-names-and-meaning-to-design-doc.patch
docs-mm-damon-design-clarify-handling-layer-based-filters-evaluation-sequence.patch
docs-mm-damon-design-categorize-damos-filter-types-based-on-handling-layer.patch
mm-damon-implement-a-new-damos-filter-type-for-unmapped-pages.patch
docs-mm-damon-design-document-unmapped-damos-filter-type.patch
mm-damon-add-data-structure-for-monitoring-intervals-auto-tuning.patch
mm-damon-core-implement-intervals-auto-tuning.patch
mm-damon-sysfs-implement-intervals-tuning-goal-directory.patch
mm-damon-sysfs-commit-intervals-tuning-goal.patch
mm-damon-sysfs-implement-a-command-to-update-auto-tuned-monitoring-intervals.patch
docs-mm-damon-design-document-for-intervals-auto-tuning.patch
docs-abi-damon-document-intervals-auto-tuning-abi.patch
docs-admin-guide-mm-damon-usage-add-intervals_goal-directory-on-the-hierarchy.patch
mm-damon-core-introduce-damos-ops_filters.patch
mm-damon-paddr-support-ops_filters.patch
mm-damon-core-support-committing-ops_filters.patch
mm-damon-core-put-ops-handled-filters-to-damos-ops_filters.patch
mm-damon-paddr-support-only-damos-ops_filters.patch
mm-damon-add-default-allow-reject-behavior-fields-to-struct-damos.patch
mm-damon-core-set-damos_filter-default-allowance-behavior-based-on-installed-filters.patch
mm-damon-paddr-respect-ops_filters_default_reject.patch
docs-mm-damon-design-update-for-changed-filter-default-behavior.patch