From: Miaohe Lin <linmiaohe@huawei.com>
Date: Thu, 28 Apr 2022 23:16:07 -0700
Subject: mm/migration: use helper function vma_lookup() in
add_page_for_migration
Git-commit: cb1c37b1c65d9e5450af2ea6ec8916c5cd23a2e7
Patch-mainline: v5.19-rc1
References: jsc#PED-1247
We could use helper function vma_lookup() to lookup the needed vma to
simplify the code.
Link: https://lkml.kernel.org/r/20220318111709.60311-6-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
---
mm/migrate.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1623,8 +1623,8 @@ static int add_page_for_migration(struct
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 */