---
name: "drm_vma_node_allow"
section: "9"
platform: "linux"
package: "linux-manual-3.16"
version: "3.16.56-1+deb8u1"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/drm_vma_node_allow"
---

# drm\_vma\_node\_allow(9)

Add open-file to list of allowed users

## NAME

drm\_vma\_node\_allow - Add open-file to list of allowed users

## SYNOPSIS

**int drm\_vma\_node\_allow(struct drm\_vma\_offset\_node \*** *node***, struct file \*** *filp***);**

## ARGUMENTS

*node*

Node to modify

*filp*

Open file to add

## DESCRIPTION

Add *filp* to the list of allowed open-files for this node. If *filp* is already on this list, the ref-count is incremented.

The list of allowed-users is preserved across **drm\_vma\_offset\_add** and **drm\_vma\_offset\_remove** calls. You may even call it if the node is currently not added to any offset-manager.

You must remove all open-files the same number of times as you added them before destroying the node. Otherwise, you will leak memory.

This is locked against concurrent access internally.

## RETURNS

0 on success, negative error code on internal failure (out-of-mem)

## AUTHORS

**Jesse Barnes** \<jesse.barnes@intel.com\>\
 Intel Corporation,

Initial version

**Laurent Pinchart** \<laurent.pinchart@ideasonboard.com\>\
 Ideas on board SPRL,

Driver internals

**Daniel Vetter** \<daniel.vetter@ffwll.ch\>\
 Intel Corporation,

Contributions all over the place

## COPYRIGHT