#include <linux/types.h>
#include <linux/list.h>
#include <linux/kref.h>
+#include <linux/mutex.h>
#include <asm/atomic.h>
-#include <asm/semaphore.h>
#define CONFIGFS_ITEM_NAME_LEN 20
struct config_item *(*make_item)(struct config_group *group, const char *name);
struct config_group *(*make_group)(struct config_group *group, const char *name);
int (*commit_item)(struct config_item *item);
+ void (*disconnect_notify)(struct config_group *group, struct config_item *item);
void (*drop_item)(struct config_group *group, struct config_item *item);
};
struct configfs_subsystem {
struct config_group su_group;
- struct semaphore su_sem;
+ struct mutex su_mutex;
};
static inline struct configfs_subsystem *to_configfs_subsystem(struct config_group *group)
int configfs_register_subsystem(struct configfs_subsystem *subsys);
void configfs_unregister_subsystem(struct configfs_subsystem *subsys);
+/* These functions can sleep and can alloc with GFP_KERNEL */
+/* WARNING: These cannot be called underneath configfs callbacks!! */
+int configfs_depend_item(struct configfs_subsystem *subsys, struct config_item *target);
+void configfs_undepend_item(struct configfs_subsystem *subsys, struct config_item *target);
+
#endif /* __KERNEL__ */
#endif /* _CONFIGFS_H_ */