linux-kernel - Re: [PATCH v1 1/2] mm/migrate: make migrate_misplaced

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Message-ID: <6C1F89D6-7093-4225-A1D1-E64655BD8A4C@nvidia.com>
Date: Thu, 20 Jun 2024 21:40:56 -0400
From: Zi Yan <ziy@...dia.com>
To: David Hildenbrand <david@...hat.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
 Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v1 1/2] mm/migrate: make migrate_misplaced_folio() return
 0 on success

On 20 Jun 2024, at 17:29, David Hildenbrand wrote:

> Let's just return 0 on success, which is less confusing.
>
> ... especially because we got it wrong in the migrate.h stub where we
> have "return -EAGAIN; /* can't migrate now */" instead of "return 0;".
> Likely this wrong return value doesn't currently matter, but it
> certainly adds confusion.
>
> We'll add migrate_misplaced_folio_prepare() next, where we want to use
> the same "return 0 on success" approach, so let's just clean this up.
>
> Signed-off-by: David Hildenbrand <david@...hat.com>
> ---
>  mm/huge_memory.c | 5 ++---
>  mm/memory.c      | 2 +-
>  mm/migrate.c     | 4 ++--
>  3 files changed, 5 insertions(+), 6 deletions(-)
>

LGTM. Reviewed-by: Zi Yan <ziy@...dia.com>

--
Best Regards,
Yan, Zi

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