Re: splice vs execve lockdep trace.

[Al Viro]

On Tue, Jul 16, 2013 at 04:03:51PM +1000, Dave Chinner wrote:

> I posted patches to fix this i_mutex/i_iolock inversion a couple of
> years ago (july 2011):
> 
> https://lkml.org/lkml/2011/7/18/4
> 
> And V2 was posted here and reviewed (aug 2011):
> 
> http://xfs.9218.n7.nabble.com/PATCH-0-2-splice-i-mutex-vs-splice-write-deadlock-V2-tt4072.html#none

Unless I'm misreading the patch, you end up doing file_remove_suid()
without holding i_mutex at all...
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