From: "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx> vma_lookup() walks the VMA tree for a specific value, find_vma() will search the tree after walking to a specific value. It is more efficient to only walk to the requested value as this case requires the address to equal the vm_start. Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx> --- drivers/xen/privcmd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c index 720a7b7abd46..5f903ae9af7e 100644 --- a/drivers/xen/privcmd.c +++ b/drivers/xen/privcmd.c @@ -282,7 +282,7 @@ static long privcmd_ioctl_mmap(struct file *file, void __user *udata) struct page, lru); struct privcmd_mmap_entry *msg = page_address(page); - vma = find_vma(mm, msg->va); + vma = vma_lookup(mm, msg->va); rc = -EINVAL; if (!vma || (msg->va != vma->vm_start) || vma->vm_private_data) -- 2.30.2
