---

yaml --- r: 165897 b: refs/heads/master c: 3e99d8e h: refs/heads/master i: 165895: 6291dcb v: v3
git-mirror · Sep 16, 2009 · dbe4d6a · dbe4d6a
1 parent eae7a59
commit dbe4d6a
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Showing 2 changed files with 12 additions and 4 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 83ebade34bc1a90d0c3f77b87b940f336d075fda
+refs/heads/master: 3e99d8eb347c93a5d38081380b8c9e69b203212e
diff --git a/trunk/fs/btrfs/async-thread.c b/trunk/fs/btrfs/async-thread.c
@@ -74,7 +74,12 @@ static void check_idle_worker(struct btrfs_worker_thread *worker)
 		unsigned long flags;
 		spin_lock_irqsave(&worker->workers->lock, flags);
 		worker->idle = 1;
-		list_move(&worker->worker_list, &worker->workers->idle_list);
+
+		/* the list may be empty if the worker is just starting */
+		if (!list_empty(&worker->worker_list)) {
+			list_move(&worker->worker_list,
+				 &worker->workers->idle_list);
+		}
 		spin_unlock_irqrestore(&worker->workers->lock, flags);
 	}
 }
@@ -90,8 +95,11 @@ static void check_busy_worker(struct btrfs_worker_thread *worker)
 		unsigned long flags;
 		spin_lock_irqsave(&worker->workers->lock, flags);
 		worker->idle = 0;
-		list_move_tail(&worker->worker_list,
-			       &worker->workers->worker_list);
+
+		if (!list_empty(&worker->worker_list)) {
+			list_move_tail(&worker->worker_list,
+				      &worker->workers->worker_list);
+		}
 		spin_unlock_irqrestore(&worker->workers->lock, flags);
 	}
 }