Merge branch 'exec-update-lock-for-v5.11' of git://git.kernel.org/pub/scm/linux/kerne...

[linux-2.6-block.git] / kernel / pid.c

diff --git a/kernel/pid.c b/kernel/pid.c
index 47466d0bbc5b13eef0d5da50193e6f1dc78a3705..ebdf9c60cd0b586b7e6d9f06028bf31bfd9571ab 100644 (file)
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -628,7 +628,7 @@ static struct file *__pidfd_fget(struct task_struct *task, int fd)
        struct file *file;
        int ret;
 
-       ret = mutex_lock_killable(&task->signal->exec_update_mutex);
+       ret = down_read_killable(&task->signal->exec_update_lock);
        if (ret)
                return ERR_PTR(ret);
 
@@ -637,7 +637,7 @@ static struct file *__pidfd_fget(struct task_struct *task, int fd)
        else
                file = ERR_PTR(-EPERM);
 
-       mutex_unlock(&task->signal->exec_update_mutex);
+       up_read(&task->signal->exec_update_lock);
 
        return file ?: ERR_PTR(-EBADF);
 }