Name
seq_hlist_start_head_rcu —
start an iteration of a hlist protected by RCU
Synopsis
struct hlist_node * fsfuncseq_hlist_start_head_rcu ( | struct hlist_head * head, |
| | loff_t pos); |
Arguments
head
the head of the hlist
pos
the start position of the sequence
Description
Called at seq_file->op->start. Call this function if you want to
print a header at the top of the output.
This list-traversal primitive may safely run concurrently with
the _rcu list-mutation primitives such as hlist_add_head_rcu
as long as the traversal is guarded by rcu_read_lock.