Re: [PATCH 1/5] locking: Introduce range reader/writer lock

[Laurent Dufour]

On 28/03/2017 18:58, Kirill A. Shutemov wrote:
> On Tue, Mar 28, 2017 at 09:39:18AM -0700, Davidlohr Bueso wrote:
>> I'll wait to see if there are any more concerns and send a v2 with your corrections.
> 
> Have you tried drop-in replacement of mmap_sem with full range lock?
> It would be interesting to see performance implication for this.
> 

I've a patch that replace the mmap_sem with a full range lock, it seems
to work fine for x86 and ppc64 for now. I'll send it soon.
But I didn't yet check for performance. What is the best way to that ?