sched: optimize cond_resched()

[karo-tx-linux.git] / kernel / ptrace.c

diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 61c78b2c07baefd768aed903f482ea08d9672200..082c320e4dbf0a4538b064f55814c72246852877 100644 (file)
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -181,8 +181,8 @@ int ptrace_attach(struct task_struct *task)
         * interference; SUID, SGID and LSM creds get determined differently
         * under ptrace.
         */
-       retval = mutex_lock_interruptible(&task->cred_guard_mutex);
-       if (retval < 0)
+       retval = -ERESTARTNOINTR;
+       if (mutex_lock_interruptible(&task->cred_guard_mutex))
                goto out;
 
        task_lock(task);