Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [PATCHSET cgroup] extend threadgroup locking | Date | Mon, 5 Sep 2011 06:05:57 +0200 |
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Hi,
On Sunday, September 04, 2011, Tejun Heo wrote: > Hello, > > cgroup currently only blocks new threads from joining the target > threadgroup during migration, and on-going migration could race > against exec and exit leading to interesting problems - the symmetry > between various attach methods, task exiting during method execution, > ->exit() racing against attach methods, migrating task switching basic > properties during exec and so on. > > This patchset extends threadgroup locking such that it covers all > operations which can alter the threadgroup - fork, exit and exec, and > update cgroup to take advantage of it. rwsem read ops are added to > exit path but exec is excluded by grabbing the existing > cred_guard_mutex from threadgroup locking helper. > > This makes threadgroup locking complete and resolves cgroup issues > stemming from the target taskset being unstable. > > This patchset is on top of the current pm-freezer + "freezer: fixes & > simplifications" patchset and contains the following four patches. > Patch list and diffstat follow.
OK
I'm assuming that there will be a branch for me to pull from when kernel.org starts to work again, right?
Rafael
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