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drm: use drm_file to tag vm-bos

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Rather than using "struct file*", use "struct drm_file*" as tag VM tag for
BOs. This will pave the way for "struct drm_file*" without any "struct
file*" back-pointer.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20160901124837.680-3-dh.herrmann@gmail.com
This commit is contained in:
David Herrmann
2016-09-01 14:48:33 +02:00
committed by Daniel Vetter
parent 75ae95a75d
commit d9a1f0b4eb
11 changed files with 51 additions and 41 deletions
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20
include/drm/drm_vma_manager.h
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@@ -24,16 +24,17 @@
*/
#include <drm/drm_mm.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/rbtree.h>
#include <linux/spinlock.h>
#include <linux/types.h>
struct drm_file;
struct drm_vma_offset_file {
struct rb_node vm_rb;
struct file *vm_filp;
struct drm_file *vm_tag;
unsigned long vm_count;
};
@@ -60,10 +61,11 @@ int drm_vma_offset_add(struct drm_vma_offset_manager *mgr,
void drm_vma_offset_remove(struct drm_vma_offset_manager *mgr,
struct drm_vma_offset_node *node);
int drm_vma_node_allow(struct drm_vma_offset_node *node, struct file *filp);
void drm_vma_node_revoke(struct drm_vma_offset_node *node, struct file *filp);
int drm_vma_node_allow(struct drm_vma_offset_node *node, struct drm_file *tag);
void drm_vma_node_revoke(struct drm_vma_offset_node *node,
struct drm_file *tag);
bool drm_vma_node_is_allowed(struct drm_vma_offset_node *node,
struct file *filp);
struct drm_file *tag);
/**
* drm_vma_offset_exact_lookup_locked() - Look up node by exact address
@@ -214,9 +216,9 @@ static inline void drm_vma_node_unmap(struct drm_vma_offset_node *node,
/**
* drm_vma_node_verify_access() - Access verification helper for TTM
* @node: Offset node
* @filp: Open-file
* @tag: Tag of file to check
*
* This checks whether @filp is granted access to @node. It is the same as
* This checks whether @tag is granted access to @node. It is the same as
* drm_vma_node_is_allowed() but suitable as drop-in helper for TTM
* verify_access() callbacks.
*
@@ -224,9 +226,9 @@ static inline void drm_vma_node_unmap(struct drm_vma_offset_node *node,
* 0 if access is granted, -EACCES otherwise.
*/
static inline int drm_vma_node_verify_access(struct drm_vma_offset_node *node,
struct file *filp)
struct drm_file *tag)
{
return drm_vma_node_is_allowed(node, filp) ? 0 : -EACCES;
return drm_vma_node_is_allowed(node, tag) ? 0 : -EACCES;
}
#endif /* __DRM_VMA_MANAGER_H__ */