loop: fix lockdep warning
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2044123
Upstream Status: merged to linus tree
Signed-off-by: Ming Lei ming.lei@redhat.com
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2044123
Upstream Status: merged to linus tree
Signed-off-by: Ming Lei ming.lei@redhat.com