From: Andrew Morton <akpm@linux-foundation.org>
To: mm-commits@vger.kernel.org,stable@vger.kernel.org,sj@kernel.org,akpm@linux-foundation.org
Subject: [merged mm-stable] mm-damon-core-make-charge_addr_from-aware-of-end-address-exclusivity.patch removed from -mm tree
Date: Thu, 28 May 2026 21:06:11 -0700 [thread overview]
Message-ID: <20260529040611.D977D1F00898@smtp.kernel.org> (raw)
The quilt patch titled
Subject: mm/damon/core: make charge_addr_from aware of end-address exclusivity
has been removed from the -mm tree. Its filename was
mm-damon-core-make-charge_addr_from-aware-of-end-address-exclusivity.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: SeongJae Park <sj@kernel.org>
Subject: mm/damon/core: make charge_addr_from aware of end-address exclusivity
Date: Mon, 27 Apr 2026 21:29:40 -0700
DAMON region end address is exclusive one, but charge_addr_from is
assigned assuming the end address is inclusive. As a result, DAMOS action
to next up to min_region_sz memory can be skipped. This is quite
negligible user impact. But, the bug is a bug that can be very simply
fixed. Fix the wrong assignment to respect the exclusiveness of the
address.
The issue was discovered [1] by Sashiko.
Link: https://lore.kernel.org/20260428042942.118230-1-sj@kernel.org
Link: https://lore.kernel.org/20260428032324.115663-1-sj@kernel.org [1]
Fixes: 50585192bc2e ("mm/damon/schemes: skip already charged targets and regions")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org> # 5.16.x
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/damon/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/damon/core.c~mm-damon-core-make-charge_addr_from-aware-of-end-address-exclusivity
+++ a/mm/damon/core.c
@@ -2106,7 +2106,7 @@ static void damos_apply_scheme(struct da
if (damos_quota_is_set(quota) &&
quota->charged_sz >= quota->esz) {
quota->charge_target_from = t;
- quota->charge_addr_from = r->ar.end + 1;
+ quota->charge_addr_from = r->ar.end;
}
}
if (s->action != DAMOS_STAT)
_
Patches currently in -mm which might be from sj@kernel.org are
mm-damon-ops-common-call-folio_test_lru-after-folio_get.patch
mm-damon-reclaim-handle-ctx-allocation-failure.patch
mm-damonn-lru_sort-handle-ctx-allocation-failure.patch
mm-damon-core-introduce-struct-damon_probe.patch
mm-damon-core-embed-damon_probe-objects-in-damon_ctx.patch
mm-damon-core-introduce-damon_filter.patch
mm-damon-core-commit-probes.patch
mm-damon-core-introduce-damon_region-probe_hits.patch
mm-damon-core-introduce-damon_ops-apply_probes.patch
mm-damon-core-do-data-attributes-monitoring.patch
mm-damon-paddr-support-data-attributes-monitoring.patch
mm-damon-sysfs-implement-probes-dir.patch
mm-damon-sysfs-implement-probe-dir.patch
mm-damon-sysfs-implement-filters-directory.patch
mm-damon-sysfs-implement-filter-dir.patch
mm-damon-sysfs-implement-filter-dir-files.patch
mm-damon-sysfs-setup-probes-on-damon-core-api-parameters.patch
mm-damon-sysfs-schemes-implement-tried_regions-r-probes.patch
mm-damon-sysfs-schemes-implement-probe-dir.patch
mm-damon-sysfs-schemes-implement-probe-hits-file.patch
mm-damon-trace-probe_hits.patch
selftests-damon-sysfssh-test-probes-dir.patch
docs-mm-damon-design-document-data-attributes-monitoring.patch
docs-admin-guide-mm-damon-usage-document-data-attributes-monitoring.patch
mm-damon-core-introduce-damon_filter_type_memcg.patch
mm-damon-paddr-support-damon_filter_type_memcg.patch
mm-damon-sysfs-add-filters-f-path-file.patch
mm-damon-sysfs-schemes-move-memcg_path_to_id-to-sysfs-common.patch
mm-damon-sysfs-setup-damon_filter-memcg_id-from-path.patch
docs-mm-damon-design-update-for-memcg-damon-filter.patch
docs-admin-guide-mm-damon-usage-update-for-memcg-damon-filter.patch
mm-damon-core-safely-handle-no-region-case-in-damon_set_regions.patch
mm-damon-core-do-not-use-region-out-of-a-loop-in-damon_set_regions.patch
samples-damon-mtier-replace-damon_add_region-with-damon_set_regions.patch
mm-damon-tests-vaddr-kunit-replace-damon_add_region-with-damon_set_regions.patch
mm-damon-core-hide-damon_add_region.patch
mm-damon-core-hide-damon_insert_region.patch
mm-damon-core-hide-damon_destroy_region.patch
mm-damon-core-add-kdamond_call-debug_sanity-check.patch
mm-damon-core-remove-damon_verify_nr_regions.patch
mm-damon-tests-core-kunit-add-damon_set_regions-test-cases.patch
selftests-damon-sysfspy-stop-kdamonds-before-failing.patch
selftests-damon-sysfssh-test-monitoring-intervals-goal-dir.patch
selftests-damon-sysfssh-test-addr_unit-file-existence.patch
selftests-damon-sysfssh-test-pause-file-existence.patch
mm-damon-core-trace-esz-at-first-setup.patch
reply other threads:[~2026-05-29 4:06 UTC|newest]
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