Re: [PATCH] proc: Fix unbalanced hard link numbers

[Eric W. Biederman]

Takashi Iwai <ti...@suse.de> writes:

> proc_create_mount_point() forgot to increase the parent's nlink, and
> it resulted in unbalanced hard link numbers, e.g. /proc/fs shows one
> less than expected.

Applied.  Thanks.

>
> Fixes: eb6d38d5427b ("proc: Allow creating permanently empty directories...")
> Cc: sta...@vger.kernel.org
> Reported-by: Tristan Ye <tristan...@suse.com>
> Signed-off-by: Takashi Iwai <ti...@suse.de>
> ---
>  fs/proc/generic.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/fs/proc/generic.c b/fs/proc/generic.c
> index ee27feb34cf4..9425c0d97262 100644
> --- a/fs/proc/generic.c
> +++ b/fs/proc/generic.c
> @@ -472,6 +472,7 @@ struct proc_dir_entry *proc_create_mount_point(const char 
> *name)
>               ent->data = NULL;
>               ent->proc_fops = NULL;
>               ent->proc_iops = NULL;
> +             parent->nlink++;
>               if (proc_register(parent, ent) < 0) {
>                       kfree(ent);
>                       parent->nlink--;