Re: [RFC][PATCH] Fix lock inversion aio_kick_handler()

[Jeff Moyer]

==> On Thu, 09 Nov 2006 14:51:59 -0800, Zach Brown <zach.brown@xxxxxxxxxx> said:

Zach> > Zach> > Doh.  Unfortunately, this patch isn't entirely correct
Zach> as it > Zach> could race with > __put_ioctx() which sets
Zach> ioctx->mm = NULL.
Zach> > 
Zach> > Zach> Aha, yeah, that's what I was missing.  Thanks.
Zach> > 
Zach> > Zach> > Something like the following should do the trick:
Zach> > 
Zach> > Zach> Cool, I'll respin and send it out.
Zach> > 
Zach> > Did you ever resend this patch, Zach?

Zach> Sadly, no.  I vaguely remember thinking that the refcounting was
Zach> pretty messed up in these paths and that more than just this
Zach> patch was needed.  I don't remember the details.

Zach> Maybe I should take a look again :/.

Zach> > current kernels.  I'm still running into the lockdep warnings.

Zach> When doing what?  Working with that IO_CMD_EPOLL_WAIT patch?

Yep.  =)

-Jeff
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