[PATCH v1 04/16] iommufd: Add iommufd_struct_destroy to revert iommufd_viommu_alloc

[Jason Gunthorpe]

On Thu, Apr 10, 2025 at 11:37:43PM -0700, Nicolin Chen wrote:
> An IOMMU driver that allocated a vIOMMU may want to revert the allocation,
> if it encounters an internal error after the allocation. So, there needs a
> destroy helper for drivers to use.
> 
> Move iommufd_object_abort() to the driver.c file and the public header, to
> introduce common iommufd_struct_destroy() helper that will abort all kinds
> of driver structures, not confined to iommufd_viommu but also the new ones
> being added by the following patches.
> 
> Signed-off-by: Nicolin Chen <nicolinc at nvidia.com>
> ---
>  drivers/iommu/iommufd/iommufd_private.h |  1 -
>  include/linux/iommufd.h                 | 15 +++++++++++++++
>  drivers/iommu/iommufd/driver.c          | 14 ++++++++++++++
>  drivers/iommu/iommufd/main.c            | 13 -------------
>  4 files changed, 29 insertions(+), 14 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg at nvidia.com>

Jason