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| author |   Nicolin Chen <nicolinc@nvidia.com> | 2023-07-27 23:33:25 -0700 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@nvidia.com> | 2023-07-28 13:31:24 -0300 |
| commit | 9227da7816dd1a42e20d41e2244cb63c205477ca (patch) | |
| tree | 00a7579b73a263b3bd7d1085df972df2e868c855 /rust/kernel/ssh:/git@git.zx2c4.com/git: | |
| parent | iommufd: Allow passing in iopt_access_list_id to iopt_remove_access() (diff) | |
iommufd: Add iommufd_access_change_ioas(_id) helpers
The complication of the mutex and refcount will be amplified after we
introduce the replace support for accesses. So, add a preparatory change
of a constitutive helper iommufd_access_change_ioas() and its wrapper
iommufd_access_change_ioas_id(). They can simply take care of existing
iommufd_access_attach() and iommufd_access_detach(), properly sequencing
the refcount puts so that they are truely at the end of the sequence after
we know the IOAS pointer is not required any more.
Link: https://lore.kernel.org/r/da0c462532193b447329c4eb975a596f47e49b70.1690523699.git.nicolinc@nvidia.com
Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'rust/kernel/ssh:/git@git.zx2c4.com/git:')
0 files changed, 0 insertions, 0 deletions