+ selftests-damon-_damon_sysfspy-fix-memcg_path-assignment.patch added to mm-new branch

+ selftests-damon-_damon_sysfspy-fix-memcg_path-assignment.patch added to mm-new branch

[Andrew Morton]

The patch titled
     Subject: selftests/damon/_damon_sysfs.py: fix memcg_path assignment
has been added to the -mm mm-new branch.  Its filename is
     selftests-damon-_damon_sysfspy-fix-memcg_path-assignment.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-damon-_damon_sysfspy-fix-memcg_path-assignment.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.

The mm-new branch of mm.git is not included in linux-next

If a few days of testing in mm-new is successful, the patch will me moved
into mm.git's mm-unstable branch, which is included in linux-next

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------------------------------------------------------
From: Cheng Nie <niecheng1@uniontech.com>
Subject: selftests/damon/_damon_sysfs.py: fix memcg_path assignment
Date: Mon, 29 Jun 2026 07:48:10 -0700

Patch series "selftests/damon: fix memcg_path staging handling", v5.

Fix a bug in _damon_sysfs.py for damos_filter memcg_path setup, and add
a test case of it in sysfs.py.


This patch (of 2):

DamosFilter stores memcg_path for sysfs staging, but the constructor
assigns it with a trailing comma and therefore turns it into a tuple.

Fix the assignment so memcg_path is stored as the intended string.  This
makes memcg filter staging and follow-up validation use the written path
correctly.

Link: https://lore.kernel.org/20260629144812.134159-1-sj@kernel.org
Link: https://lore.kernel.org/464AE12D4BC6B6F4+20260601090519.240482-1-niecheng1@uniontech.com
Link: https://lore.kernel.org/20260629144812.134159-2-sj@kernel.org
Signed-off-by: Cheng Nie <niecheng1@uniontech.com>
Signed-off-by: SJ Park <sj@kernel.org>
Reviewed-by: SJ Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 tools/testing/selftests/damon/_damon_sysfs.py |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/testing/selftests/damon/_damon_sysfs.py~selftests-damon-_damon_sysfspy-fix-memcg_path-assignment
+++ a/tools/testing/selftests/damon/_damon_sysfs.py
@@ -271,7 +271,7 @@ class DamosFilter:
         self.type_ = type_
         self.matching = matching
         self.allow = allow
-        self.memcg_path = memcg_path,
+        self.memcg_path = memcg_path
         self.addr_start = addr_start
         self.addr_end = addr_end
         self.target_idx = target_idx
_

Patches currently in -mm which might be from niecheng1@uniontech.com are

selftests-damon-_damon_sysfspy-fix-memcg_path-assignment.patch
selftests-damon-sysfspy-validate-memcg_path-staging-readback.patch