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Subject: Re: [PATCH 3/3] Refactor atfork handlers
To: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Cc: libc-alpha@sourceware.org
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From: Florian Weimer <fweimer@redhat.com>
Message-ID: <9a266bea-818d-64da-198e-64f1c19a7915@redhat.com>
Date: Tue, 20 Feb 2018 13:59:00 -0000
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On 02/20/2018 02:48 PM, Adhemerval Zanella wrote:

> The atfork_run_prepare will instruct __run_fork_handlers to take the internal
> atfork_lock handler:
> 
>    void
>    __run_fork_handlers (enum __run_fork_handler_type who)
>    {
>      struct fork_handler *runp;
> 
>      if (who == atfork_run_prepare)
>        {
>          lll_lock (atfork_lock, LLL_PRIVATE);
> 
> And it will prevent to add new registration until either the parent or the child
> call __run_fork_handlers with either 'atfork_run_child' or 'atfork_run_parent'
> to release the lock.

Oh, sorry, I missed that.  So the patch does not have this problem. 
This does not settle the deadlock issue, though.

Thanks,
Florian