Commit 8b0c250b authored by Patrick Mochel's avatar Patrick Mochel Committed by Greg Kroah-Hartman
Browse files

[PATCH] add klist_node_attached() to determine if a node is on a list or not. 



Signed-off-by: default avatarPatrick Mochel <mochel@digitalimplant.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>

diff -Nru a/include/linux/klist.h b/include/linux/klist.h
parent 2287c322

include/linux/klist.h

+2 −0
Original line number Diff line number Diff line
@@ -37,6 +37,8 @@ extern void klist_add_head(struct klist * k, struct klist_node * n); 
extern void klist_del(struct klist_node * n);

extern void klist_remove(struct klist_node * n);



extern int klist_node_attached(struct klist_node * n);





struct klist_iter {

	struct klist		* i_klist;

lib/klist.c

+16 −0
Original line number Diff line number Diff line
@@ -112,6 +112,7 @@ static void klist_release(struct kref * kref) 
	struct klist_node * n = container_of(kref, struct klist_node, n_ref);

	list_del(&n->n_node);

	complete(&n->n_removed);

	n->n_klist = NULL;

}



static int klist_dec_and_del(struct klist_node * n)
@@ -153,6 +154,19 @@ void klist_remove(struct klist_node * n) 
EXPORT_SYMBOL_GPL(klist_remove);





/**

 *	klist_node_attached - Say whether a node is bound to a list or not.

 *	@n:	Node that we're testing.

 */



int klist_node_attached(struct klist_node * n)

{

	return (n->n_klist != NULL);

}



EXPORT_SYMBOL_GPL(klist_node_attached);





/**

 *	klist_iter_init_node - Initialize a klist_iter structure.

 *	@k:	klist we're iterating.
@@ -246,3 +260,5 @@ struct klist_node * klist_next(struct klist_iter * i) 
}



EXPORT_SYMBOL_GPL(klist_next);