summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--kernel/audit_tree.c42
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);