Re: [PATCH 2/4] cgroup: remove redundant get/put of task struct

From: Li Zefan
Date: Thu Dec 22 2011 - 00:34:09 EST


Mandeep Singh Baines wrote:
> threadgroup_lock() guarantees that the target threadgroup will
> remain stable - no new task will be added, no new PF_EXITING
> will be set and exec won't happen.
>
> Changes in V2:
> * https://lkml.org/lkml/2011/12/20/369 (Tejun Heo)
> * Undo incorrect removal of get/put from attach_task_by_pid()
> * Author
> * Remove a comment which is made stale by this change
>
> Signed-off-by: Mandeep Singh Baines <msb@xxxxxxxxxxxx>

Acked-by: Li Zefan <lizf@xxxxxxxxxxxxxx>

> Cc: Tejun Heo <tj@xxxxxxxxxx>
> Cc: Li Zefan <lizf@xxxxxxxxxxxxxx>
> Cc: containers@xxxxxxxxxxxxxxxxxxxxxxxxxx
> Cc: cgroups@xxxxxxxxxxxxxxx
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
> Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Cc: Paul Menage <paul@xxxxxxxxxxxxxx>
> ---
> kernel/cgroup.c | 11 ++---------
> 1 files changed, 2 insertions(+), 9 deletions(-)
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