diff options
| author | mochel@digitalimplant.org <mochel@digitalimplant.org> | 2005-03-24 12:58:57 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2005-06-20 15:15:17 -0700 |
| commit | 8b0c250be489dcbf1a3a33bb4ec4c7f33735a365 (patch) | |
| tree | 17935d1064101df10ad7bb2f7ed94e6a88af295c | |
| parent | 2287c322b61fced7e0c326a1a9606aa73147e3df (diff) | |
[PATCH] add klist_node_attached() to determine if a node is on a list or not.
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
| -rw-r--r-- | include/linux/klist.h | 2 | ||||
| -rw-r--r-- | lib/klist.c | 16 |
2 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/klist.h b/include/linux/klist.h index fb52f9d9d61..eebf5e5696e 100644 --- a/include/linux/klist.h +++ b/include/linux/klist.h @@ -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; diff --git a/lib/klist.c b/lib/klist.c index 6f760424648..02177d72dc8 100644 --- a/lib/klist.c +++ b/lib/klist.c @@ -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) @@ -154,6 +155,19 @@ 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. * @i: klist_iter we're filling. @@ -246,3 +260,5 @@ struct klist_node * klist_next(struct klist_iter * i) } EXPORT_SYMBOL_GPL(klist_next); + + |