selftests: ublk: fix the build and file offsets on 32-bit

kublk puts pointers into 64-bit UAPI and SQE fields with a plain (__u64)
cast. ublk builds with -Werror, so it fails to build on 32-bit
architectures:

  batch.c:379:42: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]

Cast through uintptr_t. kublk also passes 64-bit user copy offsets,
which start at UBLKSRV_IO_BUF_OFFSET (2 GB), to pread() and pwrite(),
and with glibc those are truncated to a 32-bit off_t there. Build with
-D_FILE_OFFSET_BITS=64 as well.

Signed-off-by: Sasha Levin <sashal@kernel.org>
Reviewed-by: Ming Lei <tom.leiming@gmail.com>
Link: https://patch.msgid.link/20261103163928.641519-1-sashal@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>

0 files changed, 0 insertions, 0 deletions