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| author | Christian König <christian.koenig@amd.com> | 2020-09-14 16:09:33 +0300 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2020-11-05 15:03:52 +0300 |
| commit | 2b5b95b1ff3d70a95013a45e3b5b90f1daf42348 (patch) | |
| tree | 0d0d804862b63c20500e6e947931d18f440dbb45 /drivers/gpu/drm/vgem/vgem_drv.c | |
| parent | 0227da01f2559626396af5f6c7453360db86c1f6 (diff) | |
| download | linux-2b5b95b1ff3d70a95013a45e3b5b90f1daf42348.tar.xz | |
mm: introduce vma_set_file function v4
Add the new vma_set_file() function to allow changing
vma->vm_file with the necessary refcount dance.
v2: add more users of this.
v3: add missing EXPORT_SYMBOL, rebase on mmap cleanup,
add comments why we drop the reference on two occasions.
v4: make it clear that changing an anonymous vma is illegal.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> (v2)
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/394773/
Diffstat (limited to 'drivers/gpu/drm/vgem/vgem_drv.c')
| -rw-r--r-- | drivers/gpu/drm/vgem/vgem_drv.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c index fa54a6d1403d..ea0eecae5153 100644 --- a/drivers/gpu/drm/vgem/vgem_drv.c +++ b/drivers/gpu/drm/vgem/vgem_drv.c @@ -397,8 +397,7 @@ static int vgem_prime_mmap(struct drm_gem_object *obj, if (ret) return ret; - fput(vma->vm_file); - vma->vm_file = get_file(obj->filp); + vma_set_file(vma, obj->filp); vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); |