linux-kernel - Re: [PATCH 04/10] mm/migrate: make migrate_pages() return nr

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Date:   Fri, 9 Apr 2021 11:47:31 -0700
From:   Wei Xu <weixugc@...gle.com>
To:     Dave Hansen <dave.hansen@...el.com>
Cc:     Oscar Salvador <osalvador@...e.de>, Yang Shi <shy828301@...il.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Linux MM <linux-mm@...ck.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Yang Shi <yang.shi@...ux.alibaba.com>,
        Huang Ying <ying.huang@...el.com>,
        Dan Williams <dan.j.williams@...el.com>,
        David Hildenbrand <david@...hat.com>
Subject: Re: [PATCH 04/10] mm/migrate: make migrate_pages() return nr_succeeded

On Fri, Apr 9, 2021 at 8:50 AM Dave Hansen <dave.hansen@...el.com> wrote:
> I also considered passing NULL to mean "I don't care about
> nr_succeeded".  I mostly avoided it to reduce churn.  But, looking at it
> here, it does seem cleaner.
>
> Any objections to moving over to Oscar's suggestion?

I like this approach (making *nr_succeeded an optional argument).  No
objection here.