[PATCH v2 1/7] iommufd: Assert devices_lock for iommufd_hw_pagetable_has_group()

The hwpt->devices list is locked by this, make it clearer.

Reviewed-by: Kevin Tian kevin.tian@intel.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com --- drivers/iommu/iommufd/device.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/iommu/iommufd/device.c b/drivers/iommu/iommufd/device.c index a0c66f47a65ada..dcfaf6567420e0 100644 --- a/drivers/iommu/iommufd/device.c +++ b/drivers/iommu/iommufd/device.c @@ -186,6 +186,8 @@ static bool iommufd_hw_pagetable_has_group(struct iommufd_hw_pagetable *hwpt, { struct iommufd_device *cur_dev;

+ lockdep_assert_held(&hwpt->devices_lock); + list_for_each_entry(cur_dev, &hwpt->devices, devices_item) if (cur_dev->group == group) return true;