+ samples-damon-mtier-avoid-starting-damon-before-initialization.patch added to mm-hotfixes-unstable branch

+ samples-damon-mtier-avoid-starting-damon-before-initialization.patch added to mm-hotfixes-unstable branch

[Andrew Morton]

The patch titled
     Subject: samples/damon/mtier: avoid starting DAMON before initialization
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     samples-damon-mtier-avoid-starting-damon-before-initialization.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/samples-damon-mtier-avoid-starting-damon-before-initialization.patch

This patch will later appear in the mm-hotfixes-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: samples/damon/mtier: avoid starting DAMON before initialization
Date: Mon, 8 Sep 2025 19:22:38 -0700

Commit 964314344eab ("samples/damon/mtier: support boot time enable
setup") is somehow incompletely applying the origin patch [1].  It is
missing the part that avoids starting DAMON before module initialization. 
Probably a mistake during a merge has happened.  Fix it by applying the
missed part again.

Link: https://lkml.kernel.org/r/20250909022238.2989-4-sj@kernel.org
Link: https://lore.kernel.org/20250706193207.39810-4-sj@kernel.org [1]
Fixes: 964314344eab ("samples/damon/mtier: support boot time enable setup")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 samples/damon/mtier.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/samples/damon/mtier.c~samples-damon-mtier-avoid-starting-damon-before-initialization
+++ a/samples/damon/mtier.c
@@ -208,6 +208,9 @@ static int damon_sample_mtier_enable_sto
 	if (enabled == is_enabled)
 		return 0;
 
+	if (!init_called)
+		return 0;
+
 	if (enabled) {
 		err = damon_sample_mtier_start();
 		if (err)
_

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

mm-damon-core-introduce-damon_call_control-dealloc_on_cancel.patch
mm-damon-sysfs-use-dynamically-allocated-repeat-mode-damon_call_control.patch
samples-damon-wsse-avoid-starting-damon-before-initialization.patch
samples-damon-prcl-avoid-starting-damon-before-initialization.patch
samples-damon-mtier-avoid-starting-damon-before-initialization.patch
mm-zswap-store-page_size-compression-failed-page-as-is.patch
mm-zswap-store-page_size-compression-failed-page-as-is-fix.patch
mm-zswap-store-page_size-compression-failed-page-as-is-v5.patch
mm-zswap-store-page_size-compression-failed-page-as-is-fix-2.patch
mm-damon-core-add-damon_ctx-addr_unit.patch
mm-damon-paddr-support-addr_unit-for-access-monitoring.patch
mm-damon-paddr-support-addr_unit-for-damos_pageout.patch
mm-damon-paddr-support-addr_unit-for-damos_lru_prio.patch
mm-damon-paddr-support-addr_unit-for-migrate_hotcold.patch
mm-damon-paddr-support-addr_unit-for-damos_stat.patch
mm-damon-sysfs-implement-addr_unit-file-under-context-dir.patch
docs-mm-damon-design-document-address-unit-parameter.patch
docs-admin-guide-mm-damon-usage-document-addr_unit-file.patch
docs-abi-damon-document-addr_unit-file.patch