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Date:   Mon, 11 Feb 2019 12:34:17 -0800
From:   Davidlohr Bueso <dave@stgolabs.net>
To:     ira.weiny@intel.com
Cc:     linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-mm@kvack.org, Daniel Borkmann <daniel@iogearbox.net>,
        netdev@vger.kernel.org,
        Mike Marciniszyn <mike.marciniszyn@intel.com>,
        Dennis Dalessandro <dennis.dalessandro@intel.com>,
        Doug Ledford <dledford@redhat.com>,
        Jason Gunthorpe <jgg@ziepe.ca>,
        Andrew Morton <akpm@linux-foundation.org>,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        Dan Williams <dan.j.williams@intel.com>
Subject: Re: [PATCH 0/3] Add gup fast + longterm and use it in HFI1
Message-ID: <20190211203417.a2c2kbmjai43flyz@linux-r8p5>
Mail-Followup-To: ira.weiny@intel.com, linux-rdma@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        Daniel Borkmann <daniel@iogearbox.net>, netdev@vger.kernel.org,
        Mike Marciniszyn <mike.marciniszyn@intel.com>,
        Dennis Dalessandro <dennis.dalessandro@intel.com>,
        Doug Ledford <dledford@redhat.com>, Jason Gunthorpe <jgg@ziepe.ca>,
        Andrew Morton <akpm@linux-foundation.org>,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        Dan Williams <dan.j.williams@intel.com>
References: <20190211201643.7599-1-ira.weiny@intel.com>
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On Mon, 11 Feb 2019, ira.weiny@intel.com wrote:
>Ira Weiny (3):
>  mm/gup: Change "write" parameter to flags
>  mm/gup: Introduce get_user_pages_fast_longterm()
>  IB/HFI1: Use new get_user_pages_fast_longterm()

Out of curiosity, are you planning on having all rdma drivers
use get_user_pages_fast_longterm()? Ie:

hw/mthca/mthca_memfree.c:       ret = get_user_pages_fast(uaddr & PAGE_MASK, 1, FOLL_WRITE, pages);
hw/qib/qib_user_sdma.c:         ret = get_user_pages_fast(addr, j, 0, pages);

Thanks,
Davidlohr