diff mbox series

[v2,13/22] drm/amdgpu: Use vma_lookup() in amdgpu_ttm_tt_get_user_pages()

Message ID 20210521174745.2219620-14-Liam.Howlett@Oracle.com (mailing list archive)
State New, archived
Headers show
Series mm: Add vma_lookup() | expand

Commit Message

Liam R. Howlett May 21, 2021, 5:48 p.m. UTC 
Use vma_lookup() to find the VMA at a specific address.  As vma_lookup()
will return NULL if the address is not within any VMA, the start address
no longer needs to be validated.

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 3251f6b67e23..00b7fa8b953b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -694,9 +694,9 @@  int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo, struct page **pages)
 		return -ESRCH;
 
 	mmap_read_lock(mm);
-	vma = find_vma(mm, start);
+	vma = vma_lookup(mm, start);
 	mmap_read_unlock(mm);
-	if (unlikely(!vma || start < vma->vm_start)) {
+	if (unlikely(!vma)) {
 		r = -EFAULT;
 		goto out_putmm;
 	}