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vfio/mdev: Remove duplicate storage of parent in mdev_device

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mdev_device->type->parent is the same thing.

The struct mdev_device was relying on the kref on the mdev_parent to also
indirectly hold a kref on the mdev_type pointer. Now that the type holds a
kref on the parent we can directly kref the mdev_type and remove this
implicit relationship.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Message-Id: <10-v2-d36939638fc6+d54-vfio2_jgg@nvidia.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Jason Gunthorpe
2021-04-06 16:40:33 -03:00
committed by Alex Williamson
parent 18d731242d
commit fbea432390
3 changed files with 12 additions and 16 deletions
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include/linux/mdev.h
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@@ -14,7 +14,6 @@ struct mdev_type;
struct mdev_device {
struct device dev;
struct mdev_parent *parent;
guid_t uuid;
void *driver_data;
struct list_head next;