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Subject: Re: [PATCH] mremap: Avoid TLB flushing anonymous pages that are not
 in swap cache
References: <20180605171319.uc5jxdkxopio6kg3@techsingularity.net>
 <bfc2e579-915f-24db-0ff0-29bd9148b8c0@intel.com>
 <20180605191245.3owve7gfut22tyob@techsingularity.net>
 <ecb75c29-3d1b-3b5e-ec9d-59c4f6c1ef08@intel.com>
 <20180605195140.afc7xzgbre26m76l@techsingularity.net>
From: Dave Hansen <dave.hansen@intel.com>
Message-ID: <9dc03a4b-d359-8817-a950-b98e246dcd95@intel.com>
Date: Tue, 5 Jun 2018 12:54:27 -0700
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To: Mel Gorman <mgorman@techsingularity.net>
Cc: Andrew Morton <akpm@linux-foundation.org>, mhocko@kernel.org, vbabka@suse.cz, Aaron Lu <aaron.lu@intel.com>, linux-kernel@vger.kernel.org, linux-mm@kvack.org

On 06/05/2018 12:51 PM, Mel Gorman wrote:
> Using another testcase that simply calls mremap heavily with varying number
> of threads, it was found that very broadly speaking that TLB shootdowns
> were reduced by 31% on average throughout the entire test case but your
> milage will vary.

Looks good to me.  Feel free to add my Reviewed-by.