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| author | Jason Gunthorpe <jgg@mellanox.com> | 2018-07-25 21:40:14 -0600 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-08-01 14:55:48 -0600 |
| commit | 7452a3c745a2e7eb70d09dc5bb870759b1f26c91 (patch) | |
| tree | 6299209a46563a69fba8408baf3184f0e0d8df91 /drivers/infiniband/core/rdma_core.h | |
| parent | 9867f5c6695f0a17cde9a4dc140fe026b4e40d4a (diff) | |
| download | linux-stable-7452a3c745a2e7eb70d09dc5bb870759b1f26c91.tar.gz linux-stable-7452a3c745a2e7eb70d09dc5bb870759b1f26c91.tar.bz2 linux-stable-7452a3c745a2e7eb70d09dc5bb870759b1f26c91.zip | |
IB/uverbs: Allow RDMA_REMOVE_DESTROY to work concurrently with disassociate
After all the recent structural changes this is now straightfoward, hoist
the hw_destroy_rwsem up out of rdma_destroy_explicit and wrap it around
the uobject write lock as well as the destroy.
This is necessary as obtaining a write lock concurrently with
uverbs_destroy_ufile_hw() will cause malfunction.
After this change none of the destroy callbacks require the
disassociate_srcu lock to be correct.
This requires introducing a new lookup mode, UVERBS_LOOKUP_DESTROY as the
IOCTL interface needs to hold an unlocked kref until all command
verification is completed.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/core/rdma_core.h')
| -rw-r--r-- | drivers/infiniband/core/rdma_core.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/infiniband/core/rdma_core.h b/drivers/infiniband/core/rdma_core.h index a736b46d18e3..e4d8b985c311 100644 --- a/drivers/infiniband/core/rdma_core.h +++ b/drivers/infiniband/core/rdma_core.h @@ -52,6 +52,8 @@ const struct uverbs_method_spec *uverbs_get_method(const struct uverbs_object_sp void uverbs_destroy_ufile_hw(struct ib_uverbs_file *ufile, enum rdma_remove_reason reason); +int uobj_destroy(struct ib_uobject *uobj); + /* * uverbs_uobject_get is called in order to increase the reference count on * an uobject. This is useful when a handler wants to keep the uobject's memory |