IB/uverbs: Tidy up remaining references to ucontext

Unnecessary clutter, to indirect through ucontext when the ufile would do.
Generally most of the code code should only be working with ufile, except
for a few places that touch the driver interface.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>

drivers/infiniband/core/rdma_core.c

@@ -180,19 +180,19 @@ static int idr_add_uobj(struct ib_uobject *uobj)
 	int ret;
 
 	idr_preload(GFP_KERNEL);
-	spin_lock(&uobj->context->ufile->idr_lock);
+	spin_lock(&uobj->ufile->idr_lock);
 
 	/*
 	 * We start with allocating an idr pointing to NULL. This represents an
 	 * object which isn't initialized yet. We'll replace it later on with
 	 * the real object once we commit.
 	 */
-	ret = idr_alloc(&uobj->context->ufile->idr, NULL, 0,
+	ret = idr_alloc(&uobj->ufile->idr, NULL, 0,
 			min_t(unsigned long, U32_MAX - 1, INT_MAX), GFP_NOWAIT);
 	if (ret >= 0)
 		uobj->id = ret;
 
-	spin_unlock(&uobj->context->ufile->idr_lock);
+	spin_unlock(&uobj->ufile->idr_lock);
 	idr_preload_end();
 
 	return ret < 0 ? ret : 0;
@@ -204,9 +204,9 @@ static int idr_add_uobj(struct ib_uobject *uobj)
  */
 static void uverbs_idr_remove_uobj(struct ib_uobject *uobj)
 {
-	spin_lock(&uobj->context->ufile->idr_lock);
-	idr_remove(&uobj->context->ufile->idr, uobj->id);
-	spin_unlock(&uobj->context->ufile->idr_lock);
+	spin_lock(&uobj->ufile->idr_lock);
+	idr_remove(&uobj->ufile->idr, uobj->id);
+	spin_unlock(&uobj->ufile->idr_lock);
 }
 
 /* Returns the ib_uobject or an error. The caller should check for IS_ERR. */
@@ -519,14 +519,13 @@ int rdma_explicit_destroy(struct ib_uobject *uobject)
 
 static void alloc_commit_idr_uobject(struct ib_uobject *uobj)
 {
-	spin_lock(&uobj->context->ufile->idr_lock);
+	spin_lock(&uobj->ufile->idr_lock);
 	/*
 	 * We already allocated this IDR with a NULL object, so
 	 * this shouldn't fail.
 	 */
-	WARN_ON(idr_replace(&uobj->context->ufile->idr,
-			    uobj, uobj->id));
-	spin_unlock(&uobj->context->ufile->idr_lock);
+	WARN_ON(idr_replace(&uobj->ufile->idr, uobj, uobj->id));
+	spin_unlock(&uobj->ufile->idr_lock);
 }
 
 static void alloc_commit_fd_uobject(struct ib_uobject *uobj)

drivers/infiniband/core/uverbs_main.c

@@ -883,8 +883,6 @@ static int ib_uverbs_open(struct inode *inode, struct file *filp)
 	file->device	 = dev;
 	spin_lock_init(&file->idr_lock);
 	idr_init(&file->idr);
-	file->ucontext	 = NULL;
-	file->async_file = NULL;
 	kref_init(&file->ref);
 	mutex_init(&file->mutex);
 	mutex_init(&file->cleanup_mutex);

drivers/infiniband/core/uverbs_std_types_cq.c

@@ -61,7 +61,6 @@ static int UVERBS_HANDLER(UVERBS_METHOD_CQ_CREATE)(struct ib_device *ib_dev,
 						   struct ib_uverbs_file *file,
 						   struct uverbs_attr_bundle *attrs)
 {
-	struct ib_ucontext *ucontext = file->ucontext;
 	struct ib_ucq_object           *obj;
 	struct ib_udata uhw;
 	int ret;
@@ -98,7 +97,7 @@ static int UVERBS_HANDLER(UVERBS_METHOD_CQ_CREATE)(struct ib_device *ib_dev,
 		uverbs_uobject_get(ev_file_uobj);
 	}
 
-	if (attr.comp_vector >= ucontext->ufile->device->num_comp_vectors) {
+	if (attr.comp_vector >= file->device->num_comp_vectors) {
 		ret = -EINVAL;
 		goto err_event_file;
 	}
@@ -106,7 +105,7 @@ static int UVERBS_HANDLER(UVERBS_METHOD_CQ_CREATE)(struct ib_device *ib_dev,
 	obj = container_of(uverbs_attr_get_uobject(attrs,
 						   UVERBS_ATTR_CREATE_CQ_HANDLE),
 			   typeof(*obj), uobject);
-	obj->uverbs_file	   = ucontext->ufile;
+	obj->uverbs_file	   = file;
 	obj->comp_events_reported  = 0;
 	obj->async_events_reported = 0;
 	INIT_LIST_HEAD(&obj->comp_list);
@@ -115,7 +114,7 @@ static int UVERBS_HANDLER(UVERBS_METHOD_CQ_CREATE)(struct ib_device *ib_dev,
 	/* Temporary, only until drivers get the new uverbs_attr_bundle */
 	create_udata(attrs, &uhw);
 
-	cq = ib_dev->create_cq(ib_dev, &attr, ucontext, &uhw);
+	cq = ib_dev->create_cq(ib_dev, &attr, file->ucontext, &uhw);
 	if (IS_ERR(cq)) {
 		ret = PTR_ERR(cq);
 		goto err_event_file;

drivers/infiniband/core/uverbs_std_types_dm.c

@@ -50,7 +50,6 @@ static int UVERBS_HANDLER(UVERBS_METHOD_DM_ALLOC)(struct ib_device *ib_dev,
 						  struct ib_uverbs_file *file,
 						  struct uverbs_attr_bundle *attrs)
 {
-	struct ib_ucontext *ucontext = file->ucontext;
 	struct ib_dm_alloc_attr attr = {};
 	struct ib_uobject *uobj;
 	struct ib_dm *dm;
@@ -71,7 +70,7 @@ static int UVERBS_HANDLER(UVERBS_METHOD_DM_ALLOC)(struct ib_device *ib_dev,
 
 	uobj = uverbs_attr_get(attrs, UVERBS_ATTR_ALLOC_DM_HANDLE)->obj_attr.uobject;
 
-	dm = ib_dev->alloc_dm(ib_dev, ucontext, &attr, attrs);
+	dm = ib_dev->alloc_dm(ib_dev, file->ucontext, &attr, attrs);
 	if (IS_ERR(dm))
 		return PTR_ERR(dm);