Messages in this thread |  | | | Subject | Re: [PATCH 2/3] vfork: make it killable | | From | Matt Fleming <> | | Date | Fri, 19 Aug 2011 21:33:58 +0100 |
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On Fri, 2011-08-12 at 19:56 +0200, Oleg Nesterov wrote: > Make vfork() killable. > > Change do_fork(CLONE_VFORK) to do wait_for_completion_killable(). > If it fails we do not return to the user-mode and never touch ->mm > shared with our child. > > However, in this case we should clear child->vfork_done before > return, we use task_lock() in do_fork()->wait_for_vfork_done() > and complete_vfork_done() to serialize with each other.
It's probably worth updating the comment above task_lock() in include/linux/sched.h, to say that it is now used to protect ->vfork_done.
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