linux-kernel - [PATCH v2 0/3] mm/gup: introduce vaddr_pin_pages_remote(), FOLL

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Message-ID: <20190821040727.19650-1-jhubbard@nvidia.com>
Date:   Tue, 20 Aug 2019 21:07:24 -0700
From:   John Hubbard <jhubbard@...dia.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
CC:     Christoph Hellwig <hch@...radead.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Dave Chinner <david@...morbit.com>,
        Ira Weiny <ira.weiny@...el.com>, Jan Kara <jack@...e.cz>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Jérôme Glisse <jglisse@...hat.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        LKML <linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
        <linux-fsdevel@...r.kernel.org>, <linux-rdma@...r.kernel.org>,
        John Hubbard <jhubbard@...dia.com>
Subject: [PATCH v2 0/3] mm/gup: introduce vaddr_pin_pages_remote(), FOLL_PIN

Hi Ira,

This is for your tree. I'm dropping the RFC because this aspect is
starting to firm up pretty well.

I've moved FOLL_PIN inside the vaddr_pin_*() routines, and moved
FOLL_LONGTERM outside, based on our recent discussions. This is
documented pretty well within the patches.

Note that there are a lot of references in comments and commit
logs, to vaddr_pin_pages(). We'll want to catch all of those if
we rename that. I am pushing pretty hard to rename it to
vaddr_pin_user_pages().

v1 of this may be found here:
https://lore.kernel.org/r/20190812015044.26176-1-jhubbard@nvidia.com

John Hubbard (3):
  For Ira: tiny formatting tweak to kerneldoc
  mm/gup: introduce FOLL_PIN flag for get_user_pages()
  mm/gup: introduce vaddr_pin_pages_remote(), and invoke it

 drivers/infiniband/core/umem.c |  1 +
 include/linux/mm.h             | 61 ++++++++++++++++++++++++++++++----
 mm/gup.c                       | 40 ++++++++++++++++++++--
 mm/process_vm_access.c         | 23 +++++++------
 4 files changed, 106 insertions(+), 19 deletions(-)

-- 
2.22.1