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    Subject[PATCH 0/2] vhost, docs: convert to pin_user_pages(), new "case 5"

    It recently became clear to me that there are some get_user_pages*()
    callers that don't fit neatly into any of the four cases that are so
    far listed in pin_user_pages.rst. vhost.c is one of those.

    Add a Case 5 to the documentation, and refer to that when converting

    Thanks to Jan Kara for helping me (again) in understanding the
    interaction between get_user_pages() and page writeback [1].

    This is based on today's mmotm, which has a nearby patch to
    pin_user_pages.rst that rewords cases 3 and 4.

    Note that I have only compile-tested the vhost.c patch, although that
    does also include cross-compiling for a few other arches. Any run-time
    testing would be greatly appreciated.


    John Hubbard (2):
    docs: mm/gup: pin_user_pages.rst: add a "case 5"
    vhost: convert get_user_pages() --> pin_user_pages()

    Documentation/core-api/pin_user_pages.rst | 20 ++++++++++++++++++++
    drivers/vhost/vhost.c | 5 ++---
    2 files changed, 22 insertions(+), 3 deletions(-)


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