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Message-ID: <4A8CBC4A.4030502@cn.fujitsu.com> Date: Thu, 20 Aug 2009 11:00:26 +0800 From: Li Zefan <lizf@...fujitsu.com> To: Paul Menage <menage@...gle.com> CC: akpm@...ux-foundation.org, bblum@...rew.cmu.edu, linux-kernel@...r.kernel.org, containers@...ts.linux-foundation.org Subject: Re: [PATCH 8/8] Adds ability to move all threads in a process to a new cgroup atomically Paul Menage wrote: > From: Ben Blum <bblum@...gle.com> > > > Adds ability to move all threads in a process to a new cgroup atomically > > This patch adds functionality that enables users to move all threads in a > threadgroup at once to a cgroup by writing the tgid to the 'cgroup.procs' > file. This current implementation makes use of a per-threadgroup rwsem that's > taken for reading in the fork() path to prevent newly forking threads within > the threadgroup from "escaping" while the move is in progress. > > Cgroups subsystems that need to perform per-thread actions in their > "attach" callback are (currently) responsible for doing their own > synchronization, since this occurs outside of the critical section > that locks against cloning within a thread group. > > Signed-off-by: Ben Blum <bblum@...gle.com> > Signed-off-by: Paul Menage <menage@...gle.com> > Acked-by: Li Zefan <lizf@...fujitsu.com> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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