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Commit c82807c7 authored by Evan Green's avatar Evan Green Committed by Martijn Coenen
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UPSTREAM: loop: Add LOOP_SET_BLOCK_SIZE in compat ioctl 



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.

Bug: 117823094
Change-Id: I0061a082eb2632c47b7d66f35f2c909d33ff1653
Reviewed-by: default avatarOmar Sandoval <osandov@fb.com>
Signed-off-by: default avatarEvan Green <evgreen@chromium.org>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
(cherry picked from commit 9fea4b395260175de4016b42982f45a3e6e03d0b)
Signed-off-by: default avatarMartijn Coenen <maco@android.com>
parent 8567ea35

drivers/block/loop.c

+1 −0
Original line number Diff line number Diff line
@@ -1581,6 +1581,7 @@ 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: