linux-kernel - Re: [PATCH v3] mm/sparse.c: Use kvmalloc_node/kvfree to alloc/free memmap for the classic sparse

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Message-ID: <20200314125638.GC10912@dhcp22.suse.cz>
Date:   Sat, 14 Mar 2020 13:56:38 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Baoquan He <bhe@...hat.com>
Cc:     linux-kernel@...r.kernel.org, willy@...radead.org,
        linux-mm@...ck.org, akpm@...ux-foundation.org, david@...hat.com,
        richard.weiyang@...il.com
Subject: Re: [PATCH v3] mm/sparse.c: Use kvmalloc_node/kvfree to alloc/free
 memmap for the classic sparse

On Sat 14-03-20 08:53:34, Baoquan He wrote:
> On 03/13/20 at 03:56pm, Michal Hocko wrote:
> > On Thu 12-03-20 22:17:49, Baoquan He wrote:
> > > This change makes populate_section_memmap()/depopulate_section_memmap
> > > much simpler.
> > 
> > Not only and you should make it more explicit. It also tries to allocate
> > memmaps from the target numa node so this is a functional change. I
> > would prefer to have that in a separate patch in case we hit some weird
> > NUMA setups which would choke on memory less nodes and similar horrors.
> 
> Yes, splitting sounds more reasonable, I would love to do that. One
> question is I noticed Andrew had picked this into -mm tree, if I post a
> new patchset including these two small patches, whether it's convenient
> to drop the old one and get these two merged.

Andrew usually just drops the previous version and replaces it by the
new one. So just post a new version. Thanks!

-- 
Michal Hocko
SUSE Labs