diff options
-rw-r--r-- | kernel/audit_tree.c | 42 |
1 files changed, 17 insertions, 25 deletions
diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c index c98ab2d68a1c..ca2b6baff7aa 100644 --- a/kernel/audit_tree.c +++ b/kernel/audit_tree.c @@ -309,16 +309,28 @@ static void replace_chunk(struct audit_chunk *new, struct audit_chunk *old, list_replace_rcu(&old->hash, &new->hash); } +static void remove_chunk_node(struct audit_chunk *chunk, struct node *p) +{ + struct audit_tree *owner = p->owner; + + if (owner->root == chunk) { + list_del_init(&owner->same_root); + owner->root = NULL; + } + list_del_init(&p->list); + p->owner = NULL; + put_tree(owner); +} + static void untag_chunk(struct node *p) { struct audit_chunk *chunk = find_chunk(p); struct fsnotify_mark *entry = chunk->mark; struct audit_chunk *new = NULL; - struct audit_tree *owner; int size = chunk->count - 1; + remove_chunk_node(chunk, p); fsnotify_get_mark(entry); - spin_unlock(&hash_lock); if (size) @@ -336,15 +348,10 @@ static void untag_chunk(struct node *p) goto out; } - owner = p->owner; - if (!size) { chunk->dead = 1; spin_lock(&hash_lock); list_del_init(&chunk->trees); - if (owner->root == chunk) - owner->root = NULL; - list_del_init(&p->list); list_del_rcu(&chunk->hash); spin_unlock(&hash_lock); fsnotify_detach_mark(entry); @@ -354,21 +361,16 @@ static void untag_chunk(struct node *p) } if (!new) - goto Fallback; + goto out_mutex; if (fsnotify_add_mark_locked(new->mark, entry->connector->obj, FSNOTIFY_OBJ_TYPE_INODE, 1)) { fsnotify_put_mark(new->mark); - goto Fallback; + goto out_mutex; } chunk->dead = 1; spin_lock(&hash_lock); - if (owner->root == chunk) { - list_del_init(&owner->same_root); - owner->root = NULL; - } - list_del_init(&p->list); /* * This has to go last when updating chunk as once replace_chunk() is * called, new RCU readers can see the new chunk. @@ -381,17 +383,7 @@ static void untag_chunk(struct node *p) fsnotify_put_mark(new->mark); /* drop initial reference */ goto out; -Fallback: - // do the best we can - spin_lock(&hash_lock); - if (owner->root == chunk) { - list_del_init(&owner->same_root); - owner->root = NULL; - } - list_del_init(&p->list); - p->owner = NULL; - put_tree(owner); - spin_unlock(&hash_lock); +out_mutex: mutex_unlock(&entry->group->mark_mutex); out: fsnotify_put_mark(entry); |