linux-kernel - Re: [PATCH v1] mm/memory_hotplug: don't check the nid in find_(smallest|biggest)_section

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Message-ID: <20191128144235.GN26807@dhcp22.suse.cz>
Date:   Thu, 28 Nov 2019 15:42:35 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Qian Cai <cai@....pw>
Cc:     David Hildenbrand <david@...hat.com>, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
        Oscar Salvador <osalvador@...e.de>
Subject: Re: [PATCH v1] mm/memory_hotplug: don't check the nid in
 find_(smallest|biggest)_section_pfn

On Thu 28-11-19 09:30:29, Qian Cai wrote:
> 
> 
> > On Nov 28, 2019, at 9:03 AM, David Hildenbrand <david@...hat.com> wrote:
> > 
> > That's why we have linux-next and plenty of people playing with it
> > (including you and me for example).
> 
> As mentioned, it is an expensive development practice. Once a patch
> was merged into linux-next, it becomes someone else’s problems
> because if nobody flags it as problematic, all it needs is a good eye
> review and some time before it gets merged into mainline eventually.

I would tend to agree. linux-next shouldn't be considered a low bar
target. Things should be reviewed before showing up there. There are
obviously some exceptions, as always, but it shouldn't be over used.

I wish MM patches would be applied to mmotm (and linux-next) more
conservatively.
-- 
Michal Hocko
SUSE Labs