On Fri, 2014-02-21 at 10:13 -0800, Linus Torvalds wrote: > On Thu, Feb 20, 2014 at 9:28 PM, Davidlohr Bueso <davidlohr@xxxxxx> wrote: > > From: Davidlohr Bueso <davidlohr@xxxxxx> > > > > This patch is a continuation of efforts trying to optimize find_vma(), > > avoiding potentially expensive rbtree walks to locate a vma upon faults. > > Ok, so I like this one much better than the previous version. Btw, one concern I had is regarding seqnum overflows... if such scenarios should happen we'd end up potentially returning bogus vmas and getting bus errors and other sorts of issues. So we'd have to flush the caches, but, do we care? I guess on 32bit systems it could be a bit more possible to trigger given enough forking. Thanks, Davidlohr -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>