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drm: drop setting vm_file to filp 

Talking to Al Viro on irc, we can see no possible reason for doing
this, the upper mmap code does it. The code has been there since
first import into drm tree I can find.

Al tracked down this as a requirement pre 2.3.51 hasn't been needed since.

Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2012-02-23 11:37:26 +00:00
parent 81ffbbedc3
commit 966e0cdd50
4 changed files with 0 additions and 5 deletions
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1
drivers/gpu/drm/drm_gem.c
View File

@ -700,7 +700,6 @@ int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
*/
drm_gem_object_reference(obj);
vma->vm_file = filp; /* Needed for drm_vm_open() */
drm_vm_open_locked(vma);
out_unlock:

2
drivers/gpu/drm/drm_vm.c
View File

@ -519,7 +519,6 @@ static int drm_mmap_dma(struct file *filp, struct vm_area_struct *vma)
vma->vm_flags |= VM_RESERVED; /* Don't swap */
vma->vm_flags |= VM_DONTEXPAND;
vma->vm_file = filp; /* Needed for drm_vm_open() */
drm_vm_open_locked(vma);
return 0;
}
@ -671,7 +670,6 @@ int drm_mmap_locked(struct file *filp, struct vm_area_struct *vma)
vma->vm_flags |= VM_RESERVED; /* Don't swap */
vma->vm_flags |= VM_DONTEXPAND;
vma->vm_file = filp; /* Needed for drm_vm_open() */
drm_vm_open_locked(vma);
return 0;
}

1
drivers/gpu/drm/exynos/exynos_drm_gem.c
View File

@ -208,7 +208,6 @@ static int exynos_drm_gem_mmap_buffer(struct file *filp,
/* in case of direct mapping, always having non-cachable attribute */
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
vma->vm_file = filp;
vm_size = vma->vm_end - vma->vm_start;
/*

1
drivers/gpu/drm/i810/i810_dma.c
View File

@ -99,7 +99,6 @@ static int i810_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
buf_priv = buf->dev_private;
vma->vm_flags |= (VM_IO | VM_DONTCOPY);
vma->vm_file = filp;
buf_priv->currently_mapped = I810_BUF_MAPPED;