---

yaml --- r: 269165 b: refs/heads/master c: a312733 h: refs/heads/master i: 269163: f923faa v: v3
git-mirror · Oct 4, 2011 · a0f503f · a0f503f
1 parent a126c53
commit a0f503f
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Showing 3 changed files with 16 additions and 7 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2c30245c65e8ebc3080b75ce65572ab8140bad0b
+refs/heads/master: a3127336b71f6833d1483c856dce91fe558dc3a9
diff --git a/trunk/include/linux/llist.h b/trunk/include/linux/llist.h
@@ -148,11 +148,14 @@ static inline void llist_add(struct llist_node *new, struct llist_head *head)
 	struct llist_node *entry, *old_entry;
 
 	entry = head->first;
-	do {
+	for (;;) {
 		old_entry = entry;
 		new->next = entry;
+		entry = cmpxchg(&head->first, old_entry, new);
+		if (entry == old_entry)
+			break;
 		cpu_relax();
-	} while ((entry = cmpxchg(&head->first, old_entry, new)) != old_entry);
+	}
 }
 
 /**

diff --git a/trunk/lib/llist.c b/trunk/lib/llist.c
@@ -41,11 +41,14 @@ void llist_add_batch(struct llist_node *new_first, struct llist_node *new_last,
 	struct llist_node *entry, *old_entry;
 
 	entry = head->first;
-	do {
+	for (;;) {
 		old_entry = entry;
 		new_last->next = entry;
+		entry = cmpxchg(&head->first, old_entry, new_first);
+		if (entry == old_entry)
+			break;
 		cpu_relax();
-	} while ((entry = cmpxchg(&head->first, old_entry, new_first)) != old_entry);
+	}
 }
 EXPORT_SYMBOL_GPL(llist_add_batch);
 
@@ -68,13 +71,16 @@ struct llist_node *llist_del_first(struct llist_head *head)
 	struct llist_node *entry, *old_entry, *next;
 
 	entry = head->first;
-	do {
+	for (;;) {
 		if (entry == NULL)
 			return NULL;
 		old_entry = entry;
 		next = entry->next;
+		entry = cmpxchg(&head->first, old_entry, next);
+		if (entry == old_entry)
+			break;
 		cpu_relax();
-	} while ((entry = cmpxchg(&head->first, old_entry, next)) != old_entry);
+	}
 
 	return entry;
 }