| From | Linus Torvalds <> | Date | Wed, 26 Jan 2011 06:16:08 +1000 | Subject | Re: [PATCH 20/25] mm: Simplify anon_vma refcounts |
| |
On Wed, Jan 26, 2011 at 3:31 AM, Peter Zijlstra <a.p.zijlstra@chello.nl> wrote: > > This patch changes the anon_vma refcount to be 0 when the object is > free. It does this by adding 1 ref to being in use in the anon_vma > structure (iow. the anon_vma->head list is not empty).
Why is this patch part of this series, rather than being an independent patch before the whole series?
I think this part of the series is the only total no-brainer, ie we should have done this from the beginning. The preemptability stuff I'm more nervous about (performance issues? semantic differences?)
Linus
|