llist: Add llist_next()

So we don't have to expose the struct list_node member.

Cc: Huang Ying <ying.huang@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1315836348.26517.41.camel@twins
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2 files changed, 6 insertions, 1 deletions

diff --git a/include/linux/llist.h b/include/linux/llist.h
index 27bbdf5ddf82..e2e96d04ee48 100644
--- a/include/linux/llist.h
+++ b/include/linux/llist.h
@@ -138,6 +138,11 @@ static inline bool llist_empty(const struct llist_head *head)
         return ACCESS_ONCE(head->first) == NULL;
 }
 
+static inline struct llist_node *llist_next(struct llist_node *node)
+{
+        return node->next;
+}
+
 /**
  * llist_add - add a new entry
  * @new:        new entry to be added
diff --git a/kernel/irq_work.c b/kernel/irq_work.c
index 6f0a4310defd..0e2cde4f380b 100644
--- a/kernel/irq_work.c
+++ b/kernel/irq_work.c
@@ -110,7 +110,7 @@ void irq_work_run(void)
         while (llnode != NULL) {
                 work = llist_entry(llnode, struct irq_work, llnode);
 
-                llnode = llnode->next;
+                llnode = llist_next(llnode);
 
                 /*
                  * Clear the PENDING bit, after this point the @work