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    SubjectRe: [tip:timers/urgent] posix timers: fix RLIMIT_CPU && fork()

    * Oleg Nesterov <oleg@redhat.com> wrote:

    > On 03/23, Oleg Nesterov wrote:
    > >
    > > Commit-ID: 37bebc70d7ad4144c571d74500db3bb26ec0c0eb
    > > Gitweb: http://git.kernel.org/tip/37bebc70d7ad4144c571d74500db3bb26ec0c0eb
    > > Author: Oleg Nesterov <oleg@redhat.com>
    > > AuthorDate: Mon, 23 Mar 2009 20:34:11 +0100
    > > Committer: Ingo Molnar <mingo@elte.hu>
    > > CommitDate: Mon, 23 Mar 2009 20:43:35 +0100
    > >
    > > posix timers: fix RLIMIT_CPU && fork()
    > >
    > > See http://bugzilla.kernel.org/show_bug.cgi?id=12911
    > >
    > > copy_signal() copies signal->rlim, but RLIMIT_CPU is "lost". Because
    > > posix_cpu_timers_init_group() sets cputime_expires.prof_exp = 0 and thus
    > > fastpath_timer_check() returns false unless we have other cpu timers.
    > >
    > > This is the minimal fix for 2.6.29 (tested) and 2.6.28. The patch is not
    > > optimal,
    >
    > Ingo, please drop this patch, it is very suboptimal.

    suboptimal why?

    > My intent was to make the obviously correct patch for 2.6.29, but
    > since it was already released I'll send another one.

    Please send it - thanks.

    Ingo


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