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Commit 19e72d3a authored by Bart Van Assche's avatar Bart Van Assche Committed by Christoph Hellwig
Browse files

configfs: Introduce config_item_get_unless_zero() 



Signed-off-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
[hch: minor style tweak]
Signed-off-by: default avatarChristoph 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 {