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author | John Hubbard <jhubbard@nvidia.com> | 2020-05-16 18:23:36 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2020-05-17 12:37:45 -0700 |
commit | dbfe7d74376e187f3c6eaff822e85176bc2cd06e (patch) | |
tree | 81d990e7cc2bf3e04dc61b5c8e96c208a7a65225 /mm/Kconfig | |
parent | 9740a7ae6d5208897bf3ef49e8595dc4cfd323ee (diff) |
rds: convert get_user_pages() --> pin_user_pages()
This code was using get_user_pages_fast(), in a "Case 2" scenario
(DMA/RDMA), using the categorization from [1]. That means that it's
time to convert the get_user_pages_fast() + put_page() calls to
pin_user_pages_fast() + unpin_user_pages() calls.
There is some helpful background in [2]: basically, this is a small
part of fixing a long-standing disconnect between pinning pages, and
file systems' use of those pages.
[1] Documentation/core-api/pin_user_pages.rst
[2] "Explicit pinning of user-space pages":
https://lwn.net/Articles/807108/
Cc: David S. Miller <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Cc: linux-rdma@vger.kernel.org
Cc: rds-devel@oss.oracle.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'mm/Kconfig')
0 files changed, 0 insertions, 0 deletions