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From: Namhyung Kim <namhyung@kernel.org>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>, Namhyung Kim <namhyung.kim@lge.com>,
        Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
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        "zhangwei\(Jovi\)" <jovi.zhangwei@huawei.com>,
        Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Subject: Re: [PATCHSET 00/13] tracing/uprobes: Add support for more fetch methods (v6)
References: <1383029621-7384-1-git-send-email-namhyung@kernel.org>
	<20131102155458.GA6981@redhat.com> <87ob60366m.fsf@sejong.aot.lge.com>
	<87fvrc35kj.fsf@sejong.aot.lge.com> <20131104155131.GD4440@redhat.com>
	<20131104162229.GA8921@redhat.com>
Date: Tue, 05 Nov 2013 11:15:44 +0900
In-Reply-To: <20131104162229.GA8921@redhat.com> (Oleg Nesterov's message of
	"Mon, 4 Nov 2013 17:22:29 +0100")
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On Mon, 4 Nov 2013 17:22:29 +0100, Oleg Nesterov wrote:
> On 11/04, Oleg Nesterov wrote:
>>
>> But in any case, I strongly believe that it doesn't make any sense to
>> rely on tu->inode in get_user_vaddr().
>
> Hmm. But I forgot about the case when you probe the function in libc
> and want to dump the variable in libc...

Right.  Actually that's what I really wanted.

>
> So probably I was wrong and this all needs more thinking. Damn.

:)

> Perhaps we really need to pass @file/offset, but it is not clear what
> we can do with bss/anon-mapping.

The @file/offset should work with bss since data in bss is accessed via
an offset in the program, but still anon-mapping has nothing to do with
it.  Hmm...

Thanks,
Namhyung