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-rw-r--r--lib/llist.c15
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 @@
39bool llist_add_batch(struct llist_node *new_first, struct llist_node *new_last, 39bool 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}
55EXPORT_SYMBOL_GPL(llist_add_batch); 50EXPORT_SYMBOL_GPL(llist_add_batch);
56 51