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Date:   Thu, 7 Nov 2019 18:03:37 -0800
From:   Davidlohr Bueso <dave@stgolabs.net>
To:     Waiman Long <longman@redhat.com>
Cc:     Mike Kravetz <mike.kravetz@oracle.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Will Deacon <will.deacon@arm.com>,
        Matthew Wilcox <willy@infradead.org>
Subject: Re: [PATCH v2] hugetlbfs: Take read_lock on i_mmap for PMD sharing
Message-ID: <20191108020337.pyf3ry3zsioh2ghz@linux-p48b>
Mail-Followup-To: Waiman Long <longman@redhat.com>,
        Mike Kravetz <mike.kravetz@oracle.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>, Will Deacon <will.deacon@arm.com>,
        Matthew Wilcox <willy@infradead.org>
References: <20191107211809.9539-1-longman@redhat.com>
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On Thu, 07 Nov 2019, Waiman Long wrote:
>With this patch applied, the customer is seeing significant performance
>improvement over the unpatched kernel.

Could you give more details here?

Thanks,
Davidlohr