This is a note to let you know that I've just added the patch titled
cpuset: use trialcs->mems_allowed as a temp variable
to the 4.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
cpuset-use-trialcs-mems_allowed-as-a-temp-variable.patch
and it can be found in the queue-4.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 24ee3cf89bef04e8bc23788aca4e029a3f0f06d9 Mon Sep 17 00:00:00 2001
From: Alban Crequy <alban.crequy@xxxxxxxxx>
Date: Thu, 6 Aug 2015 16:21:05 +0200
Subject: cpuset: use trialcs->mems_allowed as a temp variable
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
From: Alban Crequy <alban.crequy@xxxxxxxxx>
commit 24ee3cf89bef04e8bc23788aca4e029a3f0f06d9 upstream.
The comment says it's using trialcs->mems_allowed as a temp variable but
it didn't match the code. Change the code to match the comment.
This fixes an issue when writing in cpuset.mems when a sub-directory
exists: we need to write several times for the information to persist:
| root@alban:/sys/fs/cgroup/cpuset# mkdir footest9
| root@alban:/sys/fs/cgroup/cpuset# cd footest9
| root@alban:/sys/fs/cgroup/cpuset/footest9# mkdir aa
| root@alban:/sys/fs/cgroup/cpuset/footest9# cat cpuset.mems
|
| root@alban:/sys/fs/cgroup/cpuset/footest9# echo 0 > cpuset.mems
| root@alban:/sys/fs/cgroup/cpuset/footest9# cat cpuset.mems
|
| root@alban:/sys/fs/cgroup/cpuset/footest9# echo 0 > cpuset.mems
| root@alban:/sys/fs/cgroup/cpuset/footest9# cat cpuset.mems
| 0
| root@alban:/sys/fs/cgroup/cpuset/footest9# cat aa/cpuset.mems
|
| root@alban:/sys/fs/cgroup/cpuset/footest9# echo 0 > aa/cpuset.mems
| root@alban:/sys/fs/cgroup/cpuset/footest9# cat aa/cpuset.mems
| 0
| root@alban:/sys/fs/cgroup/cpuset/footest9#
This should help to fix the following issue in Docker:
https://github.com/opencontainers/runc/issues/133
In some conditions, a Docker container needs to be started twice in
order to work.
Signed-off-by: Alban Crequy <alban@xxxxxxxxxxxx>
Tested-by: Iago López Galeiras <iago@xxxxxxxxxxxx>
Acked-by: Li Zefan <lizefan@xxxxxxxxxx>
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
kernel/cpuset.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1223,7 +1223,7 @@ static int update_nodemask(struct cpuset
spin_unlock_irq(&callback_lock);
/* use trialcs->mems_allowed as a temp variable */
- update_nodemasks_hier(cs, &cs->mems_allowed);
+ update_nodemasks_hier(cs, &trialcs->mems_allowed);
done:
return retval;
}
Patches currently in stable-queue which might be from alban.crequy@xxxxxxxxx are
queue-4.1/cpuset-use-trialcs-mems_allowed-as-a-temp-variable.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html