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Date:	Fri, 14 Feb 2014 15:20:28 +0000
From:	Al Viro <>
To:	Richard Weinberger <>
Cc:	Christoph Hellwig <>,
	Linus Torvalds <>,
	Oleg Nesterov <>,
	Dave Chinner <>,
	Dave Jones <>,
	Eric Sandeen <>,
	Linux Kernel <>,
Subject: Re: 3.14-rc2 XFS backtrace because irqs_disabled.

On Fri, Feb 14, 2014 at 02:29:30PM +0100, Richard Weinberger wrote:
> Am 14.02.2014 14:25, schrieb Christoph Hellwig:
> > On Thu, Feb 13, 2014 at 08:51:46PM +0000, Al Viro wrote:
> >> On Wed, Feb 12, 2014 at 09:44:11PM +0000, Al Viro wrote:
> >>
> >>> I'll try to put something along those lines together, if you or Oleg don't
> >>> do it first.
> >>
> >> OK, having looked at that stuff...
> >>
> >> 1) things become much more compact if we finish conversion to get_signal()
> >> first.
> > 
> > I have vague memories that Richard sent out a series to convert over all
> > architectures a while ago.  Hopefully he has better memory than I do.
> Yeah. Sending v2 of that series is on my overflowing TODO list. :-\
> I think this is a good reason for me to start working on that series again.
> Stay tuned.

Would be great.   I have several done here, but I'll be glad to replace them
with something tested...

BTW, Oleg, could you explain why does PTRACE_PEEK_SIGINFO copy ->si_code
separately?  IOW, why do we want the upper 16 bits of ->si_code exposed?
It used to be a strictly internal thing IIRC (it's been what, 2.3.late?)
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