From: Souptick Joarder <jrdr.linux@gmail.com>
To: takedakn@nttdata.co.jp, penguin-kernel@I-love.SAKURA.ne.jp,
jmorris@namei.org, serge@hallyn.com
Cc: linux-security-module@vger.kernel.org,
linux-kernel@vger.kernel.org,
Souptick Joarder <jrdr.linux@gmail.com>,
John Hubbard <jhubbard@nvidia.com>
Subject: [PATCH 1/2] tomoyo: Convert get_user_pages*() to pin_user_pages*()
Date: Sat, 7 Nov 2020 13:54:10 +0530 [thread overview]
Message-ID: <1604737451-19082-1-git-send-email-jrdr.linux@gmail.com> (raw)
In 2019, we introduced pin_user_pages*() and now we are converting
get_user_pages*() to the new API as appropriate. [1] & [2] could
be referred for more information. This is case 5 as per document [1].
[1] Documentation/core-api/pin_user_pages.rst
[2] "Explicit pinning of user-space pages":
https://lwn.net/Articles/807108/
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Cc: John Hubbard <jhubbard@nvidia.com>
---
security/tomoyo/domain.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/security/tomoyo/domain.c b/security/tomoyo/domain.c
index dc4ecc0..bd748be 100644
--- a/security/tomoyo/domain.c
+++ b/security/tomoyo/domain.c
@@ -914,7 +914,7 @@ bool tomoyo_dump_page(struct linux_binprm *bprm, unsigned long pos,
* (represented by bprm). 'current' is the process doing
* the execve().
*/
- if (get_user_pages_remote(bprm->mm, pos, 1,
+ if (pin_user_pages_remote(bprm->mm, pos, 1,
FOLL_FORCE, &page, NULL, NULL) <= 0)
return false;
#else
@@ -936,7 +936,7 @@ bool tomoyo_dump_page(struct linux_binprm *bprm, unsigned long pos,
}
/* Same with put_arg_page(page) in fs/exec.c */
#ifdef CONFIG_MMU
- put_page(page);
+ unpin_user_page(page);
#endif
return true;
}
--
1.9.1
next reply other threads:[~2020-11-07 8:24 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-07 8:24 Souptick Joarder [this message]
2020-11-07 8:24 ` [PATCH 2/2] tomoyo: Fixed typo in documentation Souptick Joarder
2020-11-07 8:57 ` John Hubbard
2020-11-09 3:41 ` Souptick Joarder
2020-11-09 4:17 ` John Hubbard
2020-11-09 4:45 ` Tetsuo Handa
2020-11-10 3:08 ` James Morris
2020-11-07 9:04 ` [PATCH 1/2] tomoyo: Convert get_user_pages*() to pin_user_pages*() John Hubbard
2020-11-07 19:17 ` John Hubbard
2020-11-08 1:13 ` Tetsuo Handa
2020-11-08 2:17 ` John Hubbard
2020-11-08 4:12 ` Tetsuo Handa
2020-11-08 5:00 ` John Hubbard
2020-11-09 3:38 ` Souptick Joarder
2020-11-09 3:36 ` Souptick Joarder
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