[patch 081/143] mm/migrate.c: remove unnecessary rc != MIGRATEPAGE_SUCCESS check in 'else' case

From: Miaohe Lin <linmiaohe@huawei.com>
Subject: mm/migrate.c: remove unnecessary rc != MIGRATEPAGE_SUCCESS check in 'else' case

It's guaranteed that in the 'else' case of the rc == MIGRATEPAGE_SUCCESS
check, rc does not equal to MIGRATEPAGE_SUCCESS.  Remove this unnecessary
check.

Link: https://lkml.kernel.org/r/20210325131524.48181-3-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: David Hildenbrand <redacted>
Reviewed-by: Yang Shi <redacted>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Jerome Glisse <redacted>
Cc: Rafael Aquini <redacted>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/migrate.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/migrate.c~mm-migratec-remove-unnecessary-rc-=-migratepage_success-check-in-else-case
+++ a/mm/migrate.c

@@ -1348,7 +1348,7 @@ out_unlock:
 out:
 	if (rc == MIGRATEPAGE_SUCCESS)
 		putback_active_hugepage(hpage);
-	else if (rc != -EAGAIN && rc != MIGRATEPAGE_SUCCESS)
+	else if (rc != -EAGAIN)
 		list_move_tail(&hpage->lru, ret);
 
 	/*

_