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Date:   Tue, 24 Jul 2018 18:12:18 -0700
From:   Andrew Morton <akpm@linux-foundation.org>
To:     Pavel Tatashin <pasha.tatashin@oracle.com>
Cc:     steven.sistare@oracle.com, daniel.m.jordan@oracle.com,
        linux-kernel@vger.kernel.org, kirill.shutemov@linux.intel.com,
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        rientjes@google.com, mingo@kernel.org,
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        mpe@ellerman.id.au
Subject: Re: [PATCH 2/3] mm: calculate deferred pages after skipping
 mirrored memory
Message-Id: <20180724181218.13a1ed1d7a3e9a37e35707a9@linux-foundation.org>
In-Reply-To: <20180724235520.10200-3-pasha.tatashin@oracle.com>
References: <20180724235520.10200-1-pasha.tatashin@oracle.com>
        <20180724235520.10200-3-pasha.tatashin@oracle.com>
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On Tue, 24 Jul 2018 19:55:19 -0400 Pavel Tatashin <pasha.tatashin@oracle.com> wrote:

> update_defer_init() should be called only when struct page is about to be
> initialized. Because it counts number of initialized struct pages, but
> there we may skip struct pages if there is some mirrored memory.

What are the runtime effects of this error?