hlist_add_head_rcu(9)
NAME
hlist_add_head_rcu
SYNOPSIS
void hlist_add_head_rcu(struct hlist_node * n, struct hlist_head * h);
ARGUMENTS
- n
- the element to add to the hash list.
- h
- the list to add to.
DESCRIPTION
Adds the specified element to the specified hlist, while permitting
racing traversals.
The caller must take whatever precautions are necessary (such as
holding appropriate locks) to avoid racing with another list-mutation
primitive, such as hlist_add_head_rcu or hlist_del_rcu, running on this
same list. However, it is perfectly legal to run concurrently with the
_rcu list-traversal primitives, such as hlist_for_each_entry_rcu, used
to prevent memory-consistency problems on Alpha CPUs. Regardless of the
type of CPU, the list-traversal primitive must be guarded by
rcu_read_lock.