linux-kernel - Re: [PATCH 3/6] drivers/IB,qib: do not use mmap

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Date:   Tue, 29 Jan 2019 06:14:45 -0800
From:   Davidlohr Bueso <dave@...olabs.net>
To:     Jason Gunthorpe <jgg@...pe.ca>
Cc:     akpm@...ux-foundation.org, dledford@...hat.com, jack@...e.de,
        ira.weiny@...el.com, linux-rdma@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        dennis.dalessandro@...el.com, mike.marciniszyn@...el.com,
        Davidlohr Bueso <dbueso@...e.de>
Subject: Re: [PATCH 3/6] drivers/IB,qib: do not use mmap_sem

On Mon, 28 Jan 2019, Jason Gunthorpe wrote:

>.. and I'm looking at some of the other conversions here.. *most
>likely* any caller that is manipulating rlimit for get_user_pages
>should really be calling get_user_pages_longterm, so they should not
>be converted to use _fast?

Yeah this was something that crossed my mind could come up when I
first sent the series. I'll send a v3 where I leave the gup() calls
alone for rdma drivers; and we can at least convert the mmap_sem to
reader.

Thanks,
Davidlohr