[PATCH 06/16] mm/migration: use helper function vma_lookup() in add_page_for_migration

[Miaohe Lin]

We could use helper function vma_lookup() to lookup the needed vma to
simplify the code.

Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
---
 mm/migrate.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/migrate.c b/mm/migrate.c
index 15cac2dabc93..bc79d7338780 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1613,8 +1613,8 @@ static int add_page_for_migration(struct mm_struct *mm, unsigned long addr,
 
 	mmap_read_lock(mm);
 	err = -EFAULT;
-	vma = find_vma(mm, addr);
-	if (!vma || addr < vma->vm_start || !vma_migratable(vma))
+	vma = vma_lookup(mm, addr);
+	if (!vma || !vma_migratable(vma))
 		goto out;
 
 	/* FOLL_DUMP to ignore special (like zero) pages */
-- 
2.23.0