Re: [PATCH v11 00/26] Speculative page faults

From: Laurent Dufour
Date: Mon Nov 05 2018 - 11:09:06 EST


Le 05/11/2018 Ã 11:42, Balbir Singh a ÃcritÂ:
On Thu, May 17, 2018 at 01:06:07PM +0200, Laurent Dufour wrote:
This is a port on kernel 4.17 of the work done by Peter Zijlstra to handle
page fault without holding the mm semaphore [1].

The idea is to try to handle user space page faults without holding the
mmap_sem. This should allow better concurrency for massively threaded

Question -- I presume mmap_sem (rw_semaphore implementation tested against)
was qrwlock?

I don't think so, this series doesn't change the mmap_sem definition so it still belongs to the 'struct rw_semaphore'.

Laurent.