misc/sgi-gru/grufault: Use vma_lookup() in gru_find_vma()

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>

diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c
index 723825524ea0cb333949f92a8b988f3640683e6f..d7ef61e602ede67ff7932602dd1384bb52798057 100644 (file)
--- a/drivers/misc/sgi-gru/grufault.c
+++ b/drivers/misc/sgi-gru/grufault.c
@@ -49,8 +49,8 @@ struct vm_area_struct *gru_find_vma(unsigned long vaddr)
 {
        struct vm_area_struct *vma;
 
-       vma = find_vma(current->mm, vaddr);
-       if (vma && vma->vm_start <= vaddr && vma->vm_ops == &gru_vm_ops)
+       vma = vma_lookup(current->mm, vaddr);
+       if (vma && vma->vm_ops == &gru_vm_ops)
                return vma;
        return NULL;
 }