Re: [PATCHv5 00/11] split page table lock for PMD tables

From: Peter Zijlstra
Date: Tue Oct 08 2013 - 05:56:31 EST


On Tue, Oct 08, 2013 at 12:50:06PM +0300, Kirill A. Shutemov wrote:
> I want to rework code around page->ptl a bit more:
> - allow pgtable_page_ctor() to fail and modify callers to handle it;
> - if sizeof(spinlock_t) > sizeof(long) allocate the spinlock_t
> dynamically.
>
> It will allow to use split lock with DEBUG_SPINLOCK and DEBUG_LOCK_ALLOC.
> And it will make -rt guys happier. ;)

Oh yes, if you've got the time to do that, that would be great. It would
reduce the -rt patch by one ugly hack.
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