The quilt patch titled Subject: mm/damon/sysfs-scheme: cleanup access_pattern subdirs on scheme dir setup failure has been removed from the -mm tree. Its filename was mm-damon-sysfs-scheme-cleanup-access_pattern-subdirs-on-scheme-dir-setup-failure.patch

This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------ From: SeongJae Park sj@kernel.org Subject: mm/damon/sysfs-scheme: cleanup access_pattern subdirs on scheme dir setup failure Date: Wed, 24 Dec 2025 18:30:37 -0800

When a DAMOS-scheme DAMON sysfs directory setup fails after setup of access_pattern/ directory, subdirectories of access_pattern/ directory are not cleaned up. As a result, DAMON sysfs interface is nearly broken until the system reboots, and the memory for the unremoved directory is leaked.

Cleanup the directories under such failures.

Link: https://lkml.kernel.org/r/20251225023043.18579-5-sj@kernel.org Fixes: 9bbb820a5bd5 ("mm/damon/sysfs: support DAMOS quotas") Signed-off-by: SeongJae Park sj@kernel.org Cc: chongjiapeng jiapeng.chong@linux.alibaba.com Cc: stable@vger.kernel.org # 5.18.x Signed-off-by: Andrew Morton akpm@linux-foundation.org ---

mm/damon/sysfs-schemes.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/mm/damon/sysfs-schemes.c~mm-damon-sysfs-scheme-cleanup-access_pattern-subdirs-on-scheme-dir-setup-failure +++ a/mm/damon/sysfs-schemes.c @@ -2152,7 +2152,7 @@ static int damon_sysfs_scheme_add_dirs(s return err; err = damos_sysfs_set_dests(scheme); if (err) - goto put_access_pattern_out; + goto rmdir_put_access_pattern_out; err = damon_sysfs_scheme_set_quotas(scheme); if (err) goto put_dests_out; @@ -2190,7 +2190,8 @@ rmdir_put_quotas_access_pattern_out: put_dests_out: kobject_put(&scheme->dests->kobj); scheme->dests = NULL; -put_access_pattern_out: +rmdir_put_access_pattern_out: + damon_sysfs_access_pattern_rm_dirs(scheme->access_pattern); kobject_put(&scheme->access_pattern->kobj); scheme->access_pattern = NULL; return err; _

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

mm-damon-core-introduce-nr_snapshots-damos-stat.patch mm-damon-sysfs-schemes-introduce-nr_snapshots-damos-stat-file.patch docs-mm-damon-design-update-for-nr_snapshots-damos-stat.patch docs-admin-guide-mm-damon-usage-update-for-nr_snapshots-damos-stat.patch docs-abi-damon-update-for-nr_snapshots-damos-stat.patch mm-damon-update-damos-kerneldoc-for-stat-field.patch mm-damon-core-implement-max_nr_snapshots.patch mm-damon-sysfs-schemes-implement-max_nr_snapshots-file.patch docs-mm-damon-design-update-for-max_nr_snapshots.patch docs-admin-guide-mm-damon-usage-update-for-max_nr_snapshots.patch docs-abi-damon-update-for-max_nr_snapshots.patch mm-damon-core-add-trace-point-for-damos-stat-per-apply-interval.patch mm-damon-tests-core-kunit-add-test-cases-for-multiple-regions-in-damon_test_split_regions_of-fix.patch