linux-kernel - Re: [External] Re: [RFC PATCH v2 09/18] mm: vmscan: remove noinline_for

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Message-ID: <CALvZod77DBJTDCjE0ZYYno3Q-jWvo5VLOa-0=g9N7tXPcx=_Uw@mail.gmail.com>
Date:   Sat, 10 Apr 2021 10:48:15 -0700
From:   Shakeel Butt <shakeelb@...gle.com>
To:     Muchun Song <songmuchun@...edance.com>
Cc:     Johannes Weiner <hannes@...xchg.org>, Roman Gushchin <guro@...com>,
        Michal Hocko <mhocko@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Vladimir Davydov <vdavydov.dev@...il.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux MM <linux-mm@...ck.org>,
        Xiongchun duan <duanxiongchun@...edance.com>,
        fam.zheng@...edance.com, Balbir Singh <bsingharora@...il.com>,
        Yang Shi <shy828301@...il.com>,
        Alex Shi <alex.shi@...ux.alibaba.com>
Subject: Re: [External] Re: [RFC PATCH v2 09/18] mm: vmscan: remove noinline_for_stack

On Fri, Apr 9, 2021 at 9:34 PM Muchun Song <songmuchun@...edance.com> wrote:
>
> On Sat, Apr 10, 2021 at 2:31 AM Johannes Weiner <hannes@...xchg.org> wrote:
> >
> > On Fri, Apr 09, 2021 at 08:29:50PM +0800, Muchun Song wrote:
> > > The noinline_for_stack is introduced by commit 666356297ec4 ("vmscan:
> > > set up pagevec as late as possible in shrink_inactive_list()"), its
> > > purpose is to delay the allocation of pagevec as late as possible to
> > > save stack memory. But the commit 2bcf88796381 ("mm: take pagevecs off
> > > reclaim stack") replace pagevecs by lists of pages_to_free. So we do
> > > not need noinline_for_stack, just remove it (let the compiler decide
> > > whether to inline).
> > >
> > > Signed-off-by: Muchun Song <songmuchun@...edance.com>
> >
> > Good catch.
> >
> > Acked-by: Johannes Weiner <hannes@...xchg.org>
> >
> > Since this patch is somewhat independent of the rest of the series,
> > you may want to put it in the very beginning, or even submit it
> > separately, to keep the main series as compact as possible. Reviewers
> > can be more hesitant to get involved with larger series ;)
>
> OK. I will gather all the cleanup patches into a separate series.
> Thanks for your suggestion.

That would be best.

For this patch:

Reviewed-by: Shakeel Butt <shakeelb@...gle.com>