iommufd: Make destroy_rwsem use a lock class per object type

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The selftest invokes things like replace under the object lock of its
idev which protects the idev in a similar way to a real user.
Unfortunately this triggers lockdep. A lock class per type will solve the
problem.

Link: https://lore.kernel.org/r/15-v8-6659224517ea+532-iommufd_alloc_jgg@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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This commit is contained in:

Jason Gunthorpe 2023-07-17 15:12:11 -03:00

parent e88d4ec154

commit 83f7bc6fdf

2 changed files with 11 additions and 1 deletions

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1

drivers/iommu/iommufd/iommufd_private.h

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11

drivers/iommu/iommufd/main.c

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