docs-mm-damon-design-document-fail_charge_numdenom.patch removed from -mm tree

The quilt patch titled

     Subject: Docs/mm/damon/design: document fail_charge_{num,denom}

has been removed from the -mm tree. Its filename was
docs-mm-damon-design-document-fail_charge_numdenom.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 <[email protected]>
Subject: Docs/mm/damon/design: document fail_charge_{num,denom}
Date: Mon, 27 Apr 2026 18:33:54 -0700

Update DAMON design document for the DAMOS action failed region quota charge ratio.

---

 Documentation/mm/damon/design.rst |   22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

@@ -565,6 +565,28 @@ interface <sysfs_interface>`, refer to :
 the documentation.
 
 
+.. _damon_design_damos_quotas_failed_memory_charging_ratio:
+
+Action-failed Memory Charging Ratio
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+DAMOS action to a given region can fail for some subsets of the memory of the
+region.  For example, if the action is ``pageout`` and the region has some
+unreclaimable pages, applying the action to the pages will fail.  The amount of
+system resource that is taken for such failed action applications is usually
+different from that for successful action applications.  For such cases, users
+can set different charging ratio for such failed memory.  The ratio can be
+specified using ``fail_charge_num`` and ``fail_charge_denom`` parameters.  The
+two parameters represent the numerator and denominator of the ratio.  The
+feature is enabled only if ``fail_charge_denom`` is not zero.
+
+For example, let's suppose a DAMOS action is applied to a region of 1,000 MiB
+size.  The action is successfully applied to only 700 MiB of the region.
+``fail_charge_num`` and ``fail_charge_denom`` are set to ``1`` and ``1024``,
+respectively.  Then only 700 MiB and 300 KiB of size (``700 MiB + 300 MiB * 1 /
+1024``) will be charged.
+
+
 .. _damon_design_damos_quotas_auto_tuning:
 
 Aim-oriented Feedback-driven Auto-tuning

_

Patches currently in -mm which might be from [email protected] 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