[PATCH] loop: Add LOOP_SET_DIRECT_IO in compat ioctl

[Alessio Balsini]

Export LOOP_SET_DIRECT_IO as additional lo_compat_ioctl.
The input argument for this ioctl is a single long, in the end converted
to a 1-bit boolean. Compatibility is then preserved.

Cc: Jens Axboe <ax...@kernel.dk>
Signed-off-by: Alessio Balsini <bals...@android.com>
---
 drivers/block/loop.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 3036883fc9f8..a7461f482467 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1755,6 +1755,7 @@ static int lo_compat_ioctl(struct block_device *bdev, 
fmode_t mode,
        case LOOP_SET_FD:
        case LOOP_CHANGE_FD:
        case LOOP_SET_BLOCK_SIZE:
+       case LOOP_SET_DIRECT_IO:
                err = lo_ioctl(bdev, mode, cmd, arg);
                break;
        default:
-- 
2.22.0.770.g0f2c4a37fd-goog