4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
This reverts commit 9ec298cc874d08020f45791a8396e1593c3278c1 which is
commit 628bd85947091830a8c4872adfd5ed1d515a9cf2 upstream.
It is not needed in the 4.4.y tree at this point in time.
Reported-by: Jan Kara <jack@xxxxxxx>
Cc: Ming Lei <ming.lei@xxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/block/loop.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1936,10 +1936,12 @@ static long loop_control_ioctl(struct fi
break;
if (lo->lo_state != Lo_unbound) {
ret = -EBUSY;
+ mutex_unlock(&loop_ctl_mutex);
break;
}
if (atomic_read(&lo->lo_refcnt) > 0) {
ret = -EBUSY;
+ mutex_unlock(&loop_ctl_mutex);
break;
}
lo->lo_disk->private_data = NULL;
