[Patch v4 1/4] mm/migrate.c: no need to check for i > start in do_pages_move()

[Wei Yang]

At this point, we always have i >= start. If i == start, store_status()
will return 0. So we can drop the check for i > start.

[david@xxxxxxxxxx rephrase changelog]

Signed-off-by: Wei Yang <richardw.yang@xxxxxxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
---
 mm/migrate.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/mm/migrate.c b/mm/migrate.c
index 430fdccc733e..4c2a21856717 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1661,11 +1661,9 @@ static int do_pages_move(struct mm_struct *mm, nodemask_t task_nodes,
 		err = do_move_pages_to_node(mm, &pagelist, current_node);
 		if (err)
 			goto out;
-		if (i > start) {
-			err = store_status(status, start, current_node, i - start);
-			if (err)
-				goto out;
-		}
+		err = store_status(status, start, current_node, i - start);
+		if (err)
+			goto out;
 		current_node = NUMA_NO_NODE;
 	}
 out_flush:
-- 
2.17.1