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Date: Wed, 31 May 2017 08:58:39 -0700
From: Davidlohr Bueso <dave@stgolabs.net>
To: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Cc: linux-mm@kvack.org, akpm@linux-foundation.org, Jan Kara <jack@suse.cz>,
        "Kirill A . Shutemov" <kirill@shutemov.name>,
        Michal Hocko <mhocko@kernel.org>,
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        Mel Gorman <mgorman@techsingularity.net>,
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        aneesh.kumar@linux.vnet.ibm.com, khandual@linux.vnet.ibm.com,
        paulmck@linux.vnet.ibm.com, linux-kernel@vger.kernel.org
Subject: Re: [RFC v2 02/10] mm: Remove nest locking operation with mmap_sem
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On Wed, 24 May 2017, Laurent Dufour wrote:

>The range locking framework doesn't yet provide nest locking
>operation.
>
>Once the range locking API while provide nested operation support,
>this patch will have to be reviewed.

Please note that we already have range_write_lock_nest_lock().

Thanks,
Davidlohr