From: Tejun Heo <tj@kernel.org>
To: lizefan@huawei.com, hannes@cmpxchg.org
Cc: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-team@fb.com
Subject: Re: [PATCHSET cgroup/for-4.6] cgroup: update migration destination cgroup handling
Date: Tue, 8 Mar 2016 11:50:22 -0500 [thread overview]
Message-ID: <20160308165022.GB3447@mtj.duckdns.org> (raw)
In-Reply-To: <1457025602-4193-1-git-send-email-tj@kernel.org>
On Thu, Mar 03, 2016 at 12:19:58PM -0500, Tejun Heo wrote:
> cgroup migrations used to always be single destination. There could
> be multiple sources but there was only one destination cgroup. This
> changed with default hierarchy as enabling a controller would move
> processes in child cgroups into separate csses. This was developed
> over time and is working correctly now but the way multiple
> destinations are handled is hacky and fragile. This patchset updates
> migration logic so that multi-destination handling is integral.
>
> This patchset contains the following four patches.
>
> 0001-cgroup-fix-incorrect-destination-cgroup-in-cgroup_up.patch
> 0002-cgroup-move-migration-destination-verification-out-o.patch
> 0003-cgroup-make-cgroup-_taskset-_migrate-take-cgroup_roo.patch
> 0004-cgroup-use-css_set-mg_dst_cgrp-for-the-migration-tar.patch
These changes are mostly mechanical and I want them to be in for-4.6
for a while before the merge window opens up. Applying to
cgroup/for-4.6. In the unlikely case that this breaks something,
let's fix with followup patches.
Thanks.
--
tejun
prev parent reply other threads:[~2016-03-08 16:51 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-03 17:19 [PATCHSET cgroup/for-4.6] cgroup: update migration destination cgroup handling Tejun Heo
2016-03-03 17:19 ` [PATCH 1/4] cgroup: fix incorrect destination cgroup in cgroup_update_dfl_csses() Tejun Heo
2016-03-03 17:20 ` [PATCH 2/4] cgroup: move migration destination verification out of cgroup_migrate_prepare_dst() Tejun Heo
2016-03-03 17:20 ` [PATCH 3/4] cgroup: make cgroup[_taskset]_migrate() take cgroup_root instead of cgroup Tejun Heo
2016-03-03 17:20 ` [PATCH 4/4] cgroup: use css_set->mg_dst_cgrp for the migration target cgroup Tejun Heo
2016-03-08 16:50 ` Tejun Heo [this message]
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