Commit 19e72d3a authored Feb 09, 2017 by Bart Van Assche Committed by Christoph Hellwig Jun 12, 2017

configfs: Introduce config_item_get_unless_zero()



Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
[hch: minor style tweak]
Signed-off-by: Christoph Hellwig <hch@lst.de>

parent ba80aa90

fs/configfs/item.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -138,6 +138,14 @@ 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)
		{
		if (item && kref_get_unless_zero(&item->ci_kref))
		return item;
		return 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;

include/linux/configfs.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -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 {