From c82807c7dd9f0125b3eaf6aefae31d63c260a60b Mon Sep 17 00:00:00 2001 From: Evan Green Date: Mon, 2 Jul 2018 16:03:46 -0700 Subject: [PATCH] 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: Omar Sandoval Signed-off-by: Evan Green Signed-off-by: Jens Axboe (cherry picked from commit 9fea4b395260175de4016b42982f45a3e6e03d0b) Signed-off-by: Martijn Coenen --- drivers/block/loop.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 3dc48abd22e8..7eac581912f0 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -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: