On Wed, Apr 19, 2017 at 02:18:23PM +0200, Laurent Dufour wrote: > Following the series pushed by Davidlohr Bueso based on the Jan Kara's > work [1] which introduces range locks, this series implements the > first step of the attempt to replace the mmap_sem by a range lock.
Have you previously documented attempts to replace the mmap_sem by an existing lock type before introducing a new (and frankly weird) lock? My initial question is "Why not use RCU for this?" -- the rxrpc code uses an rbtree protected by RCU.
