Re: [PATCH] ext4: make kobj_type structures constant

From: Jan Kara
Date: Fri Feb 17 2023 - 10:39:57 EST


On Thu 09-02-23 03:18:35, Thomas Weißschuh wrote:
> Since commit ee6d3dd4ed48 ("driver core: make kobj_type constant.")
> the driver core allows the usage of const struct kobj_type.
>
> Take advantage of this to constify the structure definitions to prevent
> modification at runtime.
>
> Signed-off-by: Thomas Weißschuh <linux@xxxxxxxxxxxxxx>

Looks good. Feel free to add:

Reviewed-by: Jan Kara <jack@xxxxxxx>

Honza

> ---
> fs/ext4/sysfs.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/fs/ext4/sysfs.c b/fs/ext4/sysfs.c
> index d233c24ea342..364e3da49b03 100644
> --- a/fs/ext4/sysfs.c
> +++ b/fs/ext4/sysfs.c
> @@ -496,13 +496,13 @@ static const struct sysfs_ops ext4_attr_ops = {
> .store = ext4_attr_store,
> };
>
> -static struct kobj_type ext4_sb_ktype = {
> +static const struct kobj_type ext4_sb_ktype = {
> .default_groups = ext4_groups,
> .sysfs_ops = &ext4_attr_ops,
> .release = ext4_sb_release,
> };
>
> -static struct kobj_type ext4_feat_ktype = {
> +static const struct kobj_type ext4_feat_ktype = {
> .default_groups = ext4_feat_groups,
> .sysfs_ops = &ext4_attr_ops,
> .release = (void (*)(struct kobject *))kfree,
>
> ---
> base-commit: 0983f6bf2bfc0789b51ddf7315f644ff4da50acb
> change-id: 20230209-kobj_type-ext4-962d5425769a
>
> Best regards,
> --
> Thomas Weißschuh <linux@xxxxxxxxxxxxxx>
>
--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR