diff options
| -rw-r--r-- | Documentation/RCU/whatisRCU.txt | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/RCU/whatisRCU.txt b/Documentation/RCU/whatisRCU.txt index 4f41a60e511..318df44259b 100644 --- a/Documentation/RCU/whatisRCU.txt +++ b/Documentation/RCU/whatisRCU.txt @@ -687,8 +687,9 @@ diff shows how closely related RCU and reader-writer locking can be. + spin_lock(&listmutex); list_for_each_entry(p, head, lp) { if (p->key == key) { - list_del(&p->list); + - list_del(&p->list); - write_unlock(&listmutex); + + list_del_rcu(&p->list); + spin_unlock(&listmutex); + synchronize_rcu(); kfree(p); @@ -736,7 +737,7 @@ Or, for those who prefer a side-by-side listing: 5 write_lock(&listmutex); 5 spin_lock(&listmutex); 6 list_for_each_entry(p, head, lp) { 6 list_for_each_entry(p, head, lp) { 7 if (p->key == key) { 7 if (p->key == key) { - 8 list_del(&p->list); 8 list_del(&p->list); + 8 list_del(&p->list); 8 list_del_rcu(&p->list); 9 write_unlock(&listmutex); 9 spin_unlock(&listmutex); 10 synchronize_rcu(); 10 kfree(p); 11 kfree(p); |