mm/damon/sysfs-scheme: cleanup quotas subdirs on scheme dir setup failure

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commit dc7e1d75fd upstream.

When a DAMOS-scheme DAMON sysfs directory setup fails after setup of
quotas/ directory, subdirectories of quotas/ 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/20251225023043.18579-4-sj@kernel.org
Fixes: 1b32234ab0 ("mm/damon/sysfs: support DAMOS watermarks")
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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SeongJae Park 2025-12-24 18:30:36 -08:00 • committed by Greg Kroah-Hartman

parent 23b061f421

commit 253b8f5666

1 changed files with 3 additions and 2 deletions

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mm/damon/sysfs-schemes.c

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