diff options
Diffstat (limited to 'lib/llist.c')
-rw-r--r-- | lib/llist.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/lib/llist.c b/lib/llist.c index 4a15115e90f8..4a70d120138c 100644 --- a/lib/llist.c +++ b/lib/llist.c | |||
@@ -39,18 +39,13 @@ | |||
39 | bool llist_add_batch(struct llist_node *new_first, struct llist_node *new_last, | 39 | bool llist_add_batch(struct llist_node *new_first, struct llist_node *new_last, |
40 | struct llist_head *head) | 40 | struct llist_head *head) |
41 | { | 41 | { |
42 | struct llist_node *entry, *old_entry; | 42 | struct llist_node *first; |
43 | 43 | ||
44 | entry = head->first; | 44 | do { |
45 | for (;;) { | 45 | new_last->next = first = ACCESS_ONCE(head->first); |
46 | old_entry = entry; | 46 | } while (cmpxchg(&head->first, first, new_first) != first); |
47 | new_last->next = entry; | ||
48 | entry = cmpxchg(&head->first, old_entry, new_first); | ||
49 | if (entry == old_entry) | ||
50 | break; | ||
51 | } | ||
52 | 47 | ||
53 | return old_entry == NULL; | 48 | return !first; |
54 | } | 49 | } |
55 | EXPORT_SYMBOL_GPL(llist_add_batch); | 50 | EXPORT_SYMBOL_GPL(llist_add_batch); |
56 | 51 | ||