mm/damon/sysfs: remove misleading todo comment in nid_show()

The TODO comment in nid_show() suggested returning an error if the goal
was not using nid.  However, this comment was found to be inaccurate and
misleading.This patch removes the TODO comment without changing any
existing behavior.

This change follows feedback from SJ who pointed out [1] that wiring-order
independence is expected and the function should simply show the last set
value.  and [2] checkpatch.pl complain about number of chars per line

No functional code changes were made.

Tested with KUnit:
- Built kernel with KUnit and DAMON sysfs tests enabled.
- Executed KUnit tests:
  ./tools/testing/kunit/kunit.py run --kunitconfig ./mm/damon/tests/
- All 25 tests passed, including damon_sysfs_test_add_targets.

Link: https://lkml.kernel.org/r/20251021215323.29734-2-swarajgaikwad1925@gmail.com
Link: https://lore.kernel.org/lkml/20251020151315.66260-1-sj@kernel.org/
Link: https://lore.kernel.org/lkml/20251021010847.68473-1-sj@kernel.org/
Signed-off-by: Swaraj Gaikwad <swarajgaikwad1925@gmail.com>
Suggested-by: SeongJae Park <sj@kernel.org>
Cc: David Hunter <david.hunter.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c
index c98cf4bd2fbbf35e3bea0ba7bae7f187bc6d9b3a..30d20f5b3192d8d99b7d81a2e5326ee728e0c2b9 100644 (file)
--- a/mm/damon/sysfs-schemes.c
+++ b/mm/damon/sysfs-schemes.c
@@ -1121,7 +1121,6 @@ static ssize_t nid_show(struct kobject *kobj,
        struct damos_sysfs_quota_goal *goal = container_of(kobj, struct
                        damos_sysfs_quota_goal, kobj);
 
-       /* todo: return error if the goal is not using nid */
 
        return sysfs_emit(buf, "%d\n", goal->nid);
 }