Re: [PATCH -mm 2/3] proc: make collect_sigign_sigcatch() rcu-safe

[Roland McGrath]

> In theory, this ->sighand can be re-used under us (but it can't go away).
> We could check task->sighand == sighand once again after the main loop
> to prevent the race with exit/exec, but I don't think this is really
> needed for fs/proc.

In v2.6.34-rc3-500-g0eddb51 this isn't possible because the calls from
task_sig() and do_task_stat() are under siglock.  Is that locking removed
by another pending change?


Thanks,
Roland
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