AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

docs: mm/gup: Minor documentation update

Browse Source 
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>
This commit is contained in:
Souptick Joarder 2020-06-18 00:57:03 +05:30 committed by Jonathan Corbet
parent e996919b72
commit 00674c4f10
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/core-api/pin_user_pages.rst
View File

@ -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 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. 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 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. this document, to further clarify that concept.
FOLL_PIN and FOLL_GET are mutually exclusive for a given gup call. However, FOLL_PIN and FOLL_GET are mutually exclusive for a given gup call. However,