From b8f35fa1188b84035c59d4842826c4e93a1b1c9f Mon Sep 17 00:00:00 2001 From: Imran Khan Date: Wed, 15 Jun 2022 12:10:57 +1000 Subject: kernfs: Change kernfs_notify_list to llist. At present kernfs_notify_list is implemented as a singly linked list of kernfs_node(s), where last element points to itself and value of ->attr.next tells if node is present on the list or not. Both addition and deletion to list happen under kernfs_notify_lock. Change kernfs_notify_list to llist so that addition to list can heppen locklessly. Suggested by: Al Viro Acked-by: Tejun Heo Signed-off-by: Imran Khan Link: https://lore.kernel.org/r/20220615021059.862643-3-imran.f.khan@oracle.com Signed-off-by: Greg Kroah-Hartman --- include/linux/kernfs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux/kernfs.h') diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h index 13f54f078a52..2dd9c8df0f4f 100644 --- a/include/linux/kernfs.h +++ b/include/linux/kernfs.h @@ -116,7 +116,7 @@ struct kernfs_elem_attr { const struct kernfs_ops *ops; struct kernfs_open_node __rcu *open; loff_t size; - struct kernfs_node *notify_next; /* for kernfs_notify() */ + struct llist_node notify_next; /* for kernfs_notify() */ }; /* -- cgit v1.2.3