Re: [PATCH 00/21] mm: Preemptibility -v6

From: Peter Zijlstra
Date: Tue Jan 18 2011 - 05:45:17 EST


On Mon, 2011-01-17 at 23:12 -0800, Hugh Dickins wrote:
> 18/21 mutex-provide_mutex_is_contended.patch
> I suppose so, though if we use it in the truncate path, then we are
> stuck with the vm_truncate_count stuff I'd rather hoped would go away;
> but I guess you're right, that if we did spin_needbreak/need_lockbreak
> before, then we ought to do this now - though I suspect I only added
> it because I had to insert a resched-point anyway, and it seemed a good
> idea at the time to check lockbreak too since that had just been added.

Like the other missed cleanups now possible, these are things we can
most definitely look at once the dust settles a bit. I just didn't want
to rewrite the world in one go.
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