linux-kernel - Re: [PATCH -tip 1/3] Pass mm->flags to binfmt core

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Date:	Fri, 13 Nov 2009 15:09:04 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Masami Hiramatsu <mhiramat@...hat.com>
Cc:	Ingo Molnar <mingo@...e.hu>, lkml <linux-kernel@...r.kernel.org>,
	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>,
	Hidehiro Kawai <hidehiro.kawai.ez@...achi.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Roland McGrath <roland@...hat.com>
Subject: Re: [PATCH -tip 1/3] Pass mm->flags to binfmt core_dump for bitflag
 consistency

On Fri, 13 Nov 2009 17:52:27 -0500
Masami Hiramatsu <mhiramat@...hat.com> wrote:

> Pass mm->flags to binfmt core_dump for bitflag consistency.
> Since mm->flags bit flags is not protected by locks, it will be
> changed while dumping core. This patch copies mm->flags to a
> mm_flags local variable at the beginning of do_coredump() and
> use it while dumping. mm_flags also includes dump_filter which
> filters elf sections from core file in elf_core_dump().
> So, this patch also passes mm_flags to each binfmt->core_dump().

I can kind-of guess the answer, but it would be much more reliable if
we were to hear this from yourself:

  Why did you write this patch?  What problem is being observed?
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