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Date:   Sun, 26 May 2019 04:30:43 -0700
From:   Christoph Hellwig <>
To:     Matthew Wilcox <>
Cc:, Andrew Morton <>,, Jason Gunthorpe <>,
        LKML <>,,, John Hubbard <>,
        Doug Ledford <>,
        Mike Marciniszyn <>,
        Dennis Dalessandro <>,
        Christian Benvenuti <>, Jan Kara <>,
        Ira Weiny <>,
        Jérôme Glisse <>,
        Jason Gunthorpe <>,
        Christoph Hellwig <>
Subject: Re: [PATCH v2] infiniband/mm: convert put_page() to put_user_page*()

On Sun, May 26, 2019 at 04:06:31AM -0700, Matthew Wilcox wrote:
> I thought we agreed at LSFMM that the future is a new get_user_bvec()
> / put_user_bvec().  This is largely going to touch the same places as
> step 2 in your list above.  Is it worth doing step 2?
> One of the advantages of put_user_bvec() is that it would be quite easy
> to miss a conversion from put_page() to put_user_page(), but it'll be
> a type error to miss a conversion from put_page() to put_user_bvec().

FYI, I've got a prototype for get_user_pages_bvec.  I'll post a RFC
series in a few days.

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