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Date: Fri, 22 Sep 2017 08:16:49 -0700 From: Tejun Heo <tj@...nel.org> To: Waiman Long <longman@...hat.com> Cc: Li Zefan <lizefan@...wei.com>, cgroups@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] cgroup: Reinit cgroup_taskset structure before cgroup_migrate_execute() returns On Thu, Sep 21, 2017 at 09:54:13AM -0400, Waiman Long wrote: ... > To allow reuse of the cgroup_mgctx structure, some fields in that > structure are now re-initialized at the end of cgroup_migrate_execute() > function call so that the structure can be reused again in a later > iteration without causing problem. > > This bug was introduced in the commit e595cd706982 ("group: track > migration context in cgroup_mgctx") in 4.11. This commit moves the > cgroup_taskset initialization out of cgroup_migrate(). The commit > 10467270fb3 ("cgroup: don't call migration methods if there are no > tasks to migrate") helped, but did not completely resolve the problem. > > Fixes: e595cd706982bff0211e6fafe5a108421e747fbc ("group: track migration context in cgroup_mgctx") > Signed-off-by: Waiman Long <longman@...hat.com> Applied to cgroup/for-4.14-fixes. Thanks, Waiman! -- tejun
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