diff options
| author |   John Hubbard <jhubbard@nvidia.com> | 2020-05-22 20:59:09 -0700 |
|---|---|---|
| committer |   Mike Marshall <hubcap@omnibond.com> | 2020-05-29 16:25:04 -0400 |
| commit | 0df556457748d160013e88202c11712c16a83b0c (patch) | |
| tree | 2436d8f32cf4d541a30ae62e4fd96d0fc354dc19 /security/integrity/ima/ima_template_lib.c | |
| parent | orangefs: remove redundant assignment to variable ret (diff) | |
| download | wireguard-linux-0df556457748d160013e88202c11712c16a83b0c.tar.xz wireguard-linux-0df556457748d160013e88202c11712c16a83b0c.zip | |
orangefs: convert get_user_pages() --> pin_user_pages()
This code was using get_user_pages*(), in a "Case 1" scenario
(Direct IO), using the categorization from [1]. That means that it's
time to convert the get_user_pages*() + put_page() calls to
pin_user_pages*() + 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: Mike Marshall <hubcap@omnibond.com>
Cc: Martin Brandenburg <martin@omnibond.com>
Cc: devel@lists.orangefs.org
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Diffstat (limited to 'security/integrity/ima/ima_template_lib.c')
0 files changed, 0 insertions, 0 deletions