1. 10 Sep, 2015 1 commit
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  3. 14 Jul, 2015 1 commit
    • Aleksa Sarai's avatar
      cgroup: implement the PIDs subsystem · 49b786ea
      Aleksa Sarai authored
      
      Adds a new single-purpose PIDs subsystem to limit the number of
      tasks that can be forked inside a cgroup. Essentially this is an
      implementation of RLIMIT_NPROC that applies to a cgroup rather than a
      process tree.
      
      However, it should be noted that organisational operations (adding and
      removing tasks from a PIDs hierarchy) will *not* be prevented. Rather,
      the number of tasks in the hierarchy cannot exceed the limit through
      forking. This is due to the fact that, in the unified hierarchy, attach
      cannot fail (and it is not possible for a task to overcome its PIDs
      cgroup policy limit by attaching to a child cgroup -- even if migrating
      mid-fork it must be able to fork in the parent first).
      
      PIDs are fundamentally a global resource, and it is possible to reach
      PID exhaustion inside a cgroup without hitting any reasonable kmemcg
      policy. Once you've hit PID exhaustion, you're only in a marginally
      better state than OOM. This subsystem allows PID exhaustion inside a
      cgroup to be prevented.
      Signed-off-by: default avatarAleksa Sarai <cyphar@cyphar.com>
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      49b786ea
  4. 01 Jul, 2015 1 commit
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  26. 18 Mar, 2013 1 commit
    • Jean Delvare's avatar
      MAINTAINERS: Remove Mark M. Hoffman · 94877548
      Jean Delvare authored
      
      Mark M. Hoffman stopped working on the Linux kernel several years
      ago, so he should no longer be listed as a driver maintainer. I'm not
      even sure if his e-mail address still works.
      
      I can take over 3 drivers he was responsible for, the 4th one will
      fall down to the subsystem maintainer.
      
      Also give Mark credit for all the good work he did.
      Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
      Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
      Acked-by: default avatarGuenter Roeck <linux@roeck-us.net>
      Cc: Wolfram Sang <wolfram@the-dreams.de>
      94877548
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