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docs: mm/gup: Minor documentation update

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Now there are 5 cases. Updated the same.

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Link: https://lore.kernel.org/r/1592422023-7401-1-git-send-email-jrdr.linux@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Souptick Joarder 2020-06-18 00:57:03 +05:30 committed by Jonathan Corbet
parent e996919b72
commit 00674c4f10
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Documentation/core-api/pin_user_pages.rst
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@ -33,7 +33,7 @@ all combinations of get*(), pin*(), FOLL_LONGTERM, and more. Also, the
pin_user_pages*() APIs are clearly distinct from the get_user_pages*() APIs, so
that's a natural dividing line, and a good point to make separate wrapper calls.
In other words, use pin_user_pages*() for DMA-pinned pages, and
get_user_pages*() for other cases. There are four cases described later on in
get_user_pages*() for other cases. There are five cases described later on in
this document, to further clarify that concept.
FOLL_PIN and FOLL_GET are mutually exclusive for a given gup call. However,