These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / lib / llist.c

diff --git a/kernel/lib/llist.c b/kernel/lib/llist.c
index 0b0e977..ae5872b 100644 (file)
--- a/kernel/lib/llist.c
+++ b/kernel/lib/llist.c
@@ -66,12 +66,12 @@ struct llist_node *llist_del_first(struct llist_head *head)
 {
        struct llist_node *entry, *old_entry, *next;
 
-       entry = head->first;
+       entry = smp_load_acquire(&head->first);
        for (;;) {
                if (entry == NULL)
                        return NULL;
                old_entry = entry;
-               next = entry->next;
+               next = READ_ONCE(entry->next);
                entry = cmpxchg(&head->first, old_entry, next);
                if (entry == old_entry)
                        break;