The loop driver wants to synchronously perform autoclear operation, for some userspace programs (e.g. xfstest) depend on that the autoclear operation already completes by the moment lo_release() from close() returns to userspace and immediately call umount() of a partition containing a backing file which the autoclear operation will close(). Export task_work_add() so that the loop driver can perform autoclear operation by the moment lo_release() from close() returns to userspace. Signed-off-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> --- kernel/task_work.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/task_work.c b/kernel/task_work.c index 1698fbe6f0e1..2a1644189182 100644 --- a/kernel/task_work.c +++ b/kernel/task_work.c @@ -60,6 +60,7 @@ int task_work_add(struct task_struct *task, struct callback_head *work, return 0; } +EXPORT_SYMBOL_GPL(task_work_add); /** * task_work_cancel_match - cancel a pending work added by task_work_add() -- 2.32.0
