On Wed, Mar 29 2006, Al Viro wrote:
> On Wed, Mar 29, 2006 at 10:16:43AM +0200, Jens Axboe wrote:
> > triggering. What sort of testing were you running, exactly?
> >
> > Al, any ideas?
>
> I really wonder why it's the call from do_exit() that triggers it.
> The thing is, we get off-by-exactly-one here and all previous callers
> of that puppy would be elsewhere (cfq, mostly).
>
> IOW, we get exactly one extra call of put_io_context() _and_ have it
> happen before do_exit() (i.e. from normal IO paths). Interesting...
>
> Is there any way to reproduce it without too much PITA?
That's what I'd like to know as well. So far I haven't seen any io
context anomalies with the current kernels. I'll keep poking.
--
Jens Axboe
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