From: Cyrill Gorcunov <gorcunov@gmail.com>
To: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Cc: Jonathan de Boyne Pollard
<J.deBoynePollard-newsgroups@NTLWorld.COM>,
Andrey Vagin <avagin@openvz.org>,
Andrew Morton <akpm@linuxfoundation.org>,
Michael Kerrisk <mtk.manpages@gmail.com>,
Yang Shi <yang.shi@linux.alibaba.com>,
Michal Hocko <mhocko@kernel.org>,
Cyrill Gorcunov <gorcunov@gmail.com>
Subject: [rfc linux-next 1/3] [RFC] prctl: prctl_set_mm -- Move PR_SET_MM_MAP_SIZE out of prctl_set_mm_map
Date: Mon, 07 May 2018 10:52:14 +0300 [thread overview]
Message-ID: <20180507075606.692875939@gmail.com> (raw)
[-- Attachment #1: prctl-move-PR_SET_MM_MAP_SIZE --]
[-- Type: text/plain, Size: 1597 bytes --]
It is a preparatory patch so next we will make prctl_set_mm_map
to accept struct prctl_mm_map as an argument and the only
thing prctl_set_mm_map will do is to setup new memory map,
not handling any other operations.
CC: Jonathan de Boyne Pollard <J.deBoynePollard-newsgroups@NTLWorld.COM>
CC: Andrey Vagin <avagin@openvz.org>
CC: Andrew Morton <akpm@linuxfoundation.org>
CC: Michael Kerrisk <mtk.manpages@gmail.com>
CC: Yang Shi <yang.shi@linux.alibaba.com>
CC: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
---
kernel/sys.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
Index: linux-ml.git/kernel/sys.c
===================================================================
--- linux-ml.git.orig/kernel/sys.c
+++ linux-ml.git/kernel/sys.c
@@ -1979,10 +1979,6 @@ static int prctl_set_mm_map(int opt, con
BUILD_BUG_ON(sizeof(user_auxv) != sizeof(mm->saved_auxv));
BUILD_BUG_ON(sizeof(struct prctl_mm_map) > 256);
- if (opt == PR_SET_MM_MAP_SIZE)
- return put_user((unsigned int)sizeof(prctl_map),
- (unsigned int __user *)addr);
-
if (data_size != sizeof(prctl_map))
return -EINVAL;
@@ -2063,7 +2059,11 @@ static int prctl_set_mm(int opt, unsigne
unsigned long arg4, unsigned long arg5)
{
#ifdef CONFIG_CHECKPOINT_RESTORE
- if (opt == PR_SET_MM_MAP || opt == PR_SET_MM_MAP_SIZE)
+ if (opt == PR_SET_MM_MAP_SIZE)
+ return put_user((unsigned int)sizeof(struct prctl_mm_map),
+ (unsigned int __user *)addr);
+
+ if (opt == PR_SET_MM_MAP)
return prctl_set_mm_map(opt, (const void __user *)addr, arg4);
#endif
reply other threads:[~2018-05-07 7:56 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180507075606.692875939@gmail.com \
--to=gorcunov@gmail.com \
--cc=J.deBoynePollard-newsgroups@NTLWorld.COM \
--cc=akpm@linuxfoundation.org \
--cc=avagin@openvz.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mhocko@kernel.org \
--cc=mtk.manpages@gmail.com \
--cc=yang.shi@linux.alibaba.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.