Re: [RFC PATCH 09/17] mm/damon/sysfs: implement preps directory

Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
- [Low] The `damon_sysfs_preps_ktype` static constant is defined but never referenced or attached to the sysfs hierarchy, resulting in an unused variable.
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--- Patch [9]: [RFC PATCH 09/17] mm/damon/sysfs: implement preps directory ---
commit b804c7747bd623e2ca58a340a5342097faad4841
Author: SJ Park <[email protected]>

mm/damon/sysfs: implement preps directory

This commit implements a sysfs directory and a file for setting DAMON probe
preps. It implements only the preparatory data structures and functions without
generating the directories at the moment.

> diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c
> index 50ff1c172d746..6910a0f31697a 100644
> --- a/mm/damon/sysfs.c
> +++ b/mm/damon/sysfs.c

[ ... ]

> +static struct attribute *damon_sysfs_preps_attrs[] = {
> +	&damon_sysfs_preps_nr_attr.attr,
> +	NULL,
> +};
> +ATTRIBUTE_GROUPS(damon_sysfs_preps);
> +
> +static const struct kobj_type damon_sysfs_preps_ktype = {
> +	.release = damon_sysfs_preps_release,
> +	.sysfs_ops = &kobj_sysfs_ops,
> +	.default_groups = damon_sysfs_preps_groups,
> +};

[Severity: Low]
This isn't a bug, but since damon_sysfs_preps_ktype is defined here without
being referenced or attached to the sysfs hierarchy, will this cause unused
variable compiler warnings?

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Sashiko AI review · https://sashiko.dev/#/patchset/[email protected]?part=9