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

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Signed-off-by: Patrick Mochel <mochel@digitalimplant.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff -Nru a/include/linux/klist.h b/include/linux/klist.h
This commit is contained in:
mochel@digitalimplant.org 2005-03-24 12:58:57 -08:00 committed by Greg Kroah-Hartman
parent 2287c322b6
commit 8b0c250be4
2 changed files with 18 additions and 0 deletions
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2
include/linux/klist.h
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@ -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;

16
lib/klist.c
View File

@ -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);