From: Qian Cai <cai@lca.pw>
To: Michal Hocko <mhocko@kernel.org>
Cc: akpm@linux-foundation.org, sergey.senozhatsky.work@gmail.com,
pmladek@suse.com, rostedt@goodmis.org, peterz@infradead.org,
david@redhat.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org,
Mike Kravetz <mike.kravetz@oracle.com>
Subject: Re: [PATCH -next v2] mm/hotplug: silence a lockdep splat with printk()
Date: Wed, 15 Jan 2020 07:35:45 -0500 [thread overview]
Message-ID: <39D75B58-A5CE-4837-BCD3-8026E2C88861@lca.pw> (raw)
In-Reply-To: <20200115092221.GX19428@dhcp22.suse.cz>
> On Jan 15, 2020, at 4:22 AM, Michal Hocko <mhocko@kernel.org> wrote:
>
> Is this correct? CMA pages cannot be comound?
I never saw a CMA page also a compound page. Also, in alloc_contig_range(), it calls migrate_pages()—> unmap_and_move_huge_page() which will free the old huge page, so I think that will clear pageCompound.
Cc Mike in case I miss anything.
next prev parent reply other threads:[~2020-01-15 12:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-15 5:31 [PATCH -next v2] mm/hotplug: silence a lockdep splat with printk() Qian Cai
2020-01-15 9:22 ` Michal Hocko
2020-01-15 9:24 ` Michal Hocko
2020-01-15 12:35 ` Qian Cai [this message]
2020-01-15 14:46 ` Michal Hocko
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