3.14-rc2 XFS backtrace because irqs_disabled.

[Al Viro]

On Mon, Feb 17, 2014 at 06:46:48PM +0100, Oleg Nesterov wrote:
> > pulling the logics *out* of kernel/signal.c and into arch/*.
> 
> Not really, I think.

How so?  You propose to make all architectures call do_coredump()
themselves, instead of having it done centrally.  It's more boilerplate
for all of them to get wrong.  And IME any boilerplate in that are
*will* be gotten wrong - I've gone through signal handling on all
architectures more than a few times and every time it caught a pile
of bugs...