diff options
| -rw-r--r-- | net/core/neighbour.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c index 0e2c07355463..9e7fc929bc50 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -3203,6 +3203,7 @@ static void *neigh_get_idx_any(struct seq_file *seq, loff_t *pos) } void *neigh_seq_start(struct seq_file *seq, loff_t *pos, struct neigh_table *tbl, unsigned int neigh_seq_flags) + __acquires(tbl->lock) __acquires(rcu_bh) { struct neigh_seq_state *state = seq->private; @@ -3213,6 +3214,7 @@ void *neigh_seq_start(struct seq_file *seq, loff_t *pos, struct neigh_table *tbl rcu_read_lock_bh(); state->nht = rcu_dereference_bh(tbl->nht); + read_lock(&tbl->lock); return *pos ? neigh_get_idx_any(seq, pos) : SEQ_START_TOKEN; } @@ -3246,8 +3248,13 @@ out: EXPORT_SYMBOL(neigh_seq_next); void neigh_seq_stop(struct seq_file *seq, void *v) + __releases(tbl->lock) __releases(rcu_bh) { + struct neigh_seq_state *state = seq->private; + struct neigh_table *tbl = state->tbl; + + read_unlock(&tbl->lock); rcu_read_unlock_bh(); } EXPORT_SYMBOL(neigh_seq_stop); |