diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/core/rdma_core.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/infiniband/core/rdma_core.c b/drivers/infiniband/core/rdma_core.c index 2a2f002ac7cb..85b5ee4defa4 100644 --- a/drivers/infiniband/core/rdma_core.c +++ b/drivers/infiniband/core/rdma_core.c @@ -451,6 +451,41 @@ int __must_check rdma_remove_commit_uobject(struct ib_uobject *uobj) return ret; } +static int null_obj_type_class_remove_commit(struct ib_uobject *uobj, + enum rdma_remove_reason why) +{ + return 0; +} + +static const struct uverbs_obj_type null_obj_type = { + .type_class = &((const struct uverbs_obj_type_class){ + .remove_commit = null_obj_type_class_remove_commit, + /* be cautious */ + .needs_kfree_rcu = true}), +}; + +int rdma_explicit_destroy(struct ib_uobject *uobject) +{ + int ret; + struct ib_ucontext *ucontext = uobject->context; + + /* Cleanup is running. Calling this should have been impossible */ + if (!down_read_trylock(&ucontext->cleanup_rwsem)) { + WARN(true, "ib_uverbs: Cleanup is running while removing an uobject\n"); + return 0; + } + lockdep_check(uobject, true); + ret = uobject->type->type_class->remove_commit(uobject, + RDMA_REMOVE_DESTROY); + if (ret) + return ret; + + uobject->type = &null_obj_type; + + up_read(&ucontext->cleanup_rwsem); + return 0; +} + static void alloc_commit_idr_uobject(struct ib_uobject *uobj) { uverbs_uobject_add(uobj); |