On Wed, 2017-02-08 at 14:25 -0800, Bart Van Assche wrote:
> Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
> Cc: Christoph Hellwig <hch@xxxxxx>
> ---
> fs/configfs/item.c | 6 ++++++
> include/linux/configfs.h | 1 +
> 2 files changed, 7 insertions(+)
>
> diff --git a/fs/configfs/item.c b/fs/configfs/item.c
> index 8b2a994042dd..e3501b9bbb60 100644
> --- a/fs/configfs/item.c
> +++ b/fs/configfs/item.c
> @@ -138,6 +138,12 @@ struct config_item *config_item_get(struct config_item *item)
> }
> EXPORT_SYMBOL(config_item_get);
>
> +struct config_item *config_item_get_unless_zero(struct config_item *item)
> +{
> + return item && kref_get_unless_zero(&item->ci_kref) ? item : NULL;
> +}
> +EXPORT_SYMBOL(config_item_get_unless_zero);
> +
> static void config_item_cleanup(struct config_item *item)
> {
> struct config_item_type *t = item->ci_type;
> diff --git a/include/linux/configfs.h b/include/linux/configfs.h
> index 2319b8c108e8..406e16dabc28 100644
> --- a/include/linux/configfs.h
> +++ b/include/linux/configfs.h
> @@ -75,6 +75,7 @@ extern void config_item_init_type_name(struct config_item *item,
> struct config_item_type *type);
>
> extern struct config_item * config_item_get(struct config_item *);
> +extern struct config_item * config_item_get_unless_zero(struct config_item *);
> extern void config_item_put(struct config_item *);
>
> struct config_item_type {
A reasonable idea, but this needs review from other configfs folks.
Dropping for now.
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