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Date: Wed, 24 Oct 2018 10:27:49 -0700
From: Daniel Jordan <daniel.m.jordan@oracle.com>
Subject: Re: [PATCH -V6 14/21] swap: Support to move swap account for PMD
 swap mapping
Message-ID: <20181024172749.bila5pnfsqsu7th3@ca-dmjordan1.us.oracle.com>
References: <20181010071924.18767-1-ying.huang@intel.com>
 <20181010071924.18767-15-ying.huang@intel.com>
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In-Reply-To: <20181010071924.18767-15-ying.huang@intel.com>
Sender: owner-linux-mm@kvack.org
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To: Huang Ying <ying.huang@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>, Andrea Arcangeli <aarcange@redhat.com>, Michal Hocko <mhocko@kernel.org>, Johannes Weiner <hannes@cmpxchg.org>, Shaohua Li <shli@kernel.org>, Hugh Dickins <hughd@google.com>, Minchan Kim <minchan@kernel.org>, Rik van Riel <riel@redhat.com>, Dave Hansen <dave.hansen@linux.intel.com>, Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>, Zi Yan <zi.yan@cs.rutgers.edu>, Daniel Jordan <daniel.m.jordan@oracle.com>

On Wed, Oct 10, 2018 at 03:19:17PM +0800, Huang Ying wrote:
> +static struct page *mc_handle_swap_pmd(struct vm_area_struct *vma,
> +			pmd_t pmd, swp_entry_t *entry)
> +{

Got
/home/dbbench/linux/mm/memcontrol.c:4719:21: warning: a??mc_handle_swap_pmda?? defined but not used [-Wunused-function]
 static struct page *mc_handle_swap_pmd(struct vm_area_struct *vma,
when
# CONFIG_TRANSPARENT_HUGEPAGE is not set