These functions don't really assign anything anymore, they just increment
some refcounts and do a sanity check. Call them
vfio_group_[un]use_container()
Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
Reviewed-by: Yi Liu <yi.l.liu@xxxxxxxxx>
Tested-by: Nicolin Chen <nicolinc@xxxxxxxxxx>
Tested-by: Yi Liu <yi.l.liu@xxxxxxxxx>
Tested-by: Lixiao Yang <lixiao.yang@xxxxxxxxx>
Tested-by: Matthew Rosato <mjrosato@xxxxxxxxxxxxx>
Tested-by: Yu He <yu.he@xxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
---
drivers/vfio/container.c | 14 ++++++--------
drivers/vfio/vfio.h | 4 ++--
drivers/vfio/vfio_main.c | 6 +++---
3 files changed, 11 insertions(+), 13 deletions(-)
diff --git a/drivers/vfio/container.c b/drivers/vfio/container.c
index dd79a66ec62cad..499777930b08fa 100644
--- a/drivers/vfio/container.c
+++ b/drivers/vfio/container.c
@@ -511,10 +511,8 @@ void vfio_group_detach_container(struct vfio_group *group)
vfio_container_put(container);
}
-int vfio_device_assign_container(struct vfio_device *device)
+int vfio_group_use_container(struct vfio_group *group)
{
- struct vfio_group *group = device->group;
-
lockdep_assert_held(&group->group_lock);
if (!group->container || !group->container->iommu_driver ||
@@ -529,13 +527,13 @@ int vfio_device_assign_container(struct vfio_device *device)
return 0;
}
-void vfio_device_unassign_container(struct vfio_device *device)
+void vfio_group_unuse_container(struct vfio_group *group)
{
- lockdep_assert_held_write(&device->group->group_lock);
+ lockdep_assert_held(&group->group_lock);
- WARN_ON(device->group->container_users <= 1);
- device->group->container_users--;
- fput(device->group->opened_file);
+ WARN_ON(group->container_users <= 1);
+ group->container_users--;
+ fput(group->opened_file);
}
/*
diff --git a/drivers/vfio/vfio.h b/drivers/vfio/vfio.h
index bcad54bbab08c4..f95f4925b83bbd 100644
--- a/drivers/vfio/vfio.h
+++ b/drivers/vfio/vfio.h
@@ -112,8 +112,8 @@ void vfio_unregister_iommu_driver(const struct vfio_iommu_driver_ops *ops);
bool vfio_assert_device_open(struct vfio_device *device);
struct vfio_container *vfio_container_from_file(struct file *filep);
-int vfio_device_assign_container(struct vfio_device *device);
-void vfio_device_unassign_container(struct vfio_device *device);
+int vfio_group_use_container(struct vfio_group *group);
+void vfio_group_unuse_container(struct vfio_group *group);
int vfio_container_attach_group(struct vfio_container *container,
struct vfio_group *group);
void vfio_group_detach_container(struct vfio_group *group);
diff --git a/drivers/vfio/vfio_main.c b/drivers/vfio/vfio_main.c
index 717c7f404feeea..8c2dcb481ae10b 100644
--- a/drivers/vfio/vfio_main.c
+++ b/drivers/vfio/vfio_main.c
@@ -749,7 +749,7 @@ static int vfio_device_first_open(struct vfio_device *device)
* during close_device.
*/
mutex_lock(&device->group->group_lock);
- ret = vfio_device_assign_container(device);
+ ret = vfio_group_use_container(device->group);
if (ret)
goto err_module_put;
@@ -765,7 +765,7 @@ static int vfio_device_first_open(struct vfio_device *device)
err_container:
device->kvm = NULL;
- vfio_device_unassign_container(device);
+ vfio_group_unuse_container(device->group);
err_module_put:
mutex_unlock(&device->group->group_lock);
module_put(device->dev->driver->owner);
@@ -781,7 +781,7 @@ static void vfio_device_last_close(struct vfio_device *device)
if (device->ops->close_device)
device->ops->close_device(device);
device->kvm = NULL;
- vfio_device_unassign_container(device);
+ vfio_group_unuse_container(device->group);
mutex_unlock(&device->group->group_lock);
module_put(device->dev->driver->owner);
}
--
2.38.1
