Commit 8b0c250b authored by mochel@digitalimplant.org's avatar mochel@digitalimplant.org 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
......@@ -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;
......
......@@ -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);
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