[ofa-general] Re: [PATCH] mmu notifiers #v8

[Jack Steiner]

On Tue, Mar 04, 2008 at 11:35:32AM +0100, Peter Zijlstra wrote:
> 
> On Mon, 2008-03-03 at 13:15 -0600, Jack Steiner wrote:
> 
> > I haven't thought about locking requirements for the radix tree. Most accesses
> > would be read-only & updates infrequent. Any chance of an RCU-based radix
> > implementation?  Otherwise, don't we add the potential for hot locks/cachelines
> > for threaded applications ???
> 
> The current radix tree implementation in the kernel is RCU capable. We
> just don't have many RCU users yet.

Ahhh. You are right. I thought I looked but obviously missed it.