Messages in this thread | | | From | Roland McGrath <> | Subject | Re: [PATCH 1/2] oom: don't ignore rss in nascent mm | Date | Fri, 10 Sep 2010 02:39:58 -0700 (PDT) |
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> I wonder if it makes sense to move ->cred_guard_mutex from task_struct > to signal_struct and thus make multiple-threads-inside-exec impossible. > Only one thread can win anyway.
That probably makes sense. Note that cred_guard_mutex is also overloaded for ptrace_attach, so this would add some more serialization of attaches to threads in the same group. But as long as actual attachment serializes on tasklist_lock anyway, it doesn't make a material difference. (Even without that, it would presumably be the same debugger attaching serially to threads in the same group, so it wouldn't degrade anything in practice.)
Thanks, Roland
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