On Tue, Jun 27, 2023 at 10:13:39AM +0200, Pankaj Raghav wrote: > On Tue, Jun 27, 2023 at 01:39:26PM +0900, Damien Le Moal wrote: > > > diff --git a/block/ioctl.c b/block/ioctl.c > > > index 3be11941fb2d..c40b382dd58f 100644 > > > --- a/block/ioctl.c > > > +++ b/block/ioctl.c > > > @@ -33,14 +33,18 @@ static int blkpg_do_ioctl(struct block_device *bdev, > > > if (op == BLKPG_DEL_PARTITION) > > > return bdev_del_partition(disk, p.pno); > > > > > > + /* check if partition is aligned to blocksize */ > > > + if (p.start & (bdev_logical_block_size(bdev) - 1)) > > > + return -EINVAL; > > > + /* check if length is aligned to blocksize */ > > > + if (p.length & (bdev_logical_block_size(bdev) - 1)) > > > + return -EINVAL; > > > > long long blksz_mask = bdev_logical_block_size(bdev) - 1; > > > > /* Check that the partition is aligned to the block size */ > > if ((p.start & blksz_mask) || (p.length & blksz_mask)) > > return -EINVAL; > > A Minor nit on top of your comment: > > unsigned int blksz = bdev_logical_block_size(bdev); > > /* Check that the partition is aligned to the block size */ > if (!IS_ALIGNED(p.start, blksz) || !IS_ALIGNED(p.length, blksz)) > return -EINVAL; or you can even do ... if (!IS_ALIGNED(p.start | p.length), blksz) Do I win the code golf trophy?
