From: David Hildenbrand <david@redhat.com>
To: Miaohe Lin <linmiaohe@huawei.com>, akpm@linux-foundation.org
Cc: jglisse@redhat.com, shy828301@gmail.com,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 2/5] mm/migrate.c: remove unnecessary rc != MIGRATEPAGE_SUCCESS check in 'else' case
Date: Tue, 23 Mar 2021 11:23:53 +0100 [thread overview]
Message-ID: <db2547db-5510-1fb6-9714-670b3fa18a39@redhat.com> (raw)
In-Reply-To: <20210320093701.12829-3-linmiaohe@huawei.com>
On 20.03.21 10:36, Miaohe Lin wrote:
> 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.
>
> Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
> ---
> mm/migrate.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/migrate.c b/mm/migrate.c
> index e4ca5ef508ea..20a3bf75270a 100644
> --- a/mm/migrate.c
> +++ b/mm/migrate.c
> @@ -1374,7 +1374,7 @@ static int unmap_and_move_huge_page(new_page_t get_new_page,
> 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);
>
> /*
>
Reviewed-by: David Hildenbrand <david@redhat.com>
--
Thanks,
David / dhildenb
next prev parent reply other threads:[~2021-03-23 10:24 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-20 9:36 [PATCH 0/5] Cleanup and fixup for mm/migrate.c Miaohe Lin
2021-03-20 9:36 ` [PATCH 1/5] mm/migrate.c: remove unnecessary VM_BUG_ON_PAGE on putback_movable_page() Miaohe Lin
2021-03-20 14:11 ` Rafael Aquini
2021-03-22 1:52 ` Miaohe Lin
2021-03-20 9:36 ` [PATCH 2/5] mm/migrate.c: remove unnecessary rc != MIGRATEPAGE_SUCCESS check in 'else' case Miaohe Lin
2021-03-23 10:23 ` David Hildenbrand [this message]
2021-03-20 9:36 ` [PATCH 3/5] mm/migrate.c: fix potential indeterminate pte entry in migrate_vma_insert_page() Miaohe Lin
2021-03-23 10:26 ` David Hildenbrand
2021-03-23 11:07 ` Alistair Popple
2021-03-23 11:28 ` Miaohe Lin
2021-03-23 12:15 ` Miaohe Lin
2021-03-23 11:24 ` Miaohe Lin
2021-03-20 9:37 ` [PATCH 4/5] mm/migrate.c: use helper migrate_vma_collect_skip() in migrate_vma_collect_hole() Miaohe Lin
2021-03-23 10:29 ` David Hildenbrand
2021-03-20 9:37 ` [PATCH 5/5] mm/migrate.c: fix potential deadlock in NUMA balancing shared exec THP case Miaohe Lin
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