Fix: handle sys_futex() FUTEX_WAIT interrupted by signal

[urcu.git] / urcu / rculist.h

diff --git a/urcu/rculist.h b/urcu/rculist.h
index a177f20dbf67edab2e666051b7682700def6d7db..1fd2df388f57cefc0ea19fa02a0c8c0b627847e8 100644 (file)
--- a/urcu/rculist.h
+++ b/urcu/rculist.h
@@ -35,9 +35,19 @@ void cds_list_add_rcu(struct cds_list_head *newp, struct cds_list_head *head)
 {
        newp->next = head->next;
        newp->prev = head;
 {
        newp->next = head->next;
        newp->prev = head;

-       cmm_smp_wmb();

        head->next->prev = newp;
        head->next->prev = newp;

-       head->next = newp;
+       rcu_assign_pointer(head->next, newp);
+}
+
+/* Add new element at the tail of the list. */
+static inline
+void cds_list_add_tail_rcu(struct cds_list_head *newp,
+               struct cds_list_head *head)
+{
+       newp->next = head;
+       newp->prev = head->prev;
+       rcu_assign_pointer(head->prev->next, newp);
+       head->prev = newp;

 }
 
 /*
 }
 
 /*


@@ -59,7 +69,7 @@ static inline
 void cds_list_del_rcu(struct cds_list_head *elem)
 {
        elem->next->prev = elem->prev;
 void cds_list_del_rcu(struct cds_list_head *elem)
 {
        elem->next->prev = elem->prev;

-       elem->prev->next = elem->next;
+       CMM_STORE_SHARED(elem->prev->next, elem->next);

 }
 
 /*
 }
 
 /*