Commit cb1c37b1 authored by Miaohe Lin's avatar Miaohe Lin Committed by Andrew Morton
Browse files

mm/migration: use helper function vma_lookup() in add_page_for_migration 

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: default avatarMiaohe 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: default avatarAndrew Morton <akpm@linux-foundation.org>
parent b75454e1

mm/migrate.c

+2 −2
Original line number Diff line number Diff line
@@ -1604,8 +1604,8 @@ 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 */