netdev - Re: [PATCH 0/3] Add gup fast + longterm and use it in HFI1

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Message-ID: <20190211203417.a2c2kbmjai43flyz@linux-r8p5>
Date:   Mon, 11 Feb 2019 12:34:17 -0800
From:   Davidlohr Bueso <dave@...olabs.net>
To:     ira.weiny@...el.com
Cc:     linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Daniel Borkmann <daniel@...earbox.net>,
        netdev@...r.kernel.org,
        Mike Marciniszyn <mike.marciniszyn@...el.com>,
        Dennis Dalessandro <dennis.dalessandro@...el.com>,
        Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Dan Williams <dan.j.williams@...el.com>
Subject: Re: [PATCH 0/3] Add gup fast + longterm and use it in HFI1

On Mon, 11 Feb 2019, ira.weiny@...el.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