FR_BACKGROUND
__set_bit(FR_BACKGROUND, &req->flags);
if (test_bit(FR_BACKGROUND, &req->flags)) {
if (test_bit(FR_BACKGROUND, &req->flags)) {
clear_bit(FR_BACKGROUND, &req->flags);
BUG_ON(test_bit(FR_BACKGROUND, &req->flags));
WARN_ON(!test_bit(FR_BACKGROUND, &req->flags));
__set_bit(FR_BACKGROUND, &req->flags);
if (test_bit(FR_BACKGROUND, &req->flags)) {