This change adds LOOP_SET_BLOCK_SIZE as one of the supported ioctls in lo_compat_ioctl. It only takes an unsigned long argument, and in practice a 32-bit value works fine. Signed-off-by: Evan Green <evgreen@xxxxxxxxxxxx> --- drivers/block/loop.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/block/loop.c b/drivers/block/loop.c index d6b6f434fd4b..4cb1d1be3cfb 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -1613,6 +1613,7 @@ static int lo_compat_ioctl(struct block_device *bdev, fmode_t mode, arg = (unsigned long) compat_ptr(arg); case LOOP_SET_FD: case LOOP_CHANGE_FD: + case LOOP_SET_BLOCK_SIZE: err = lo_ioctl(bdev, mode, cmd, arg); break; default: -- 2.16.4
