Messages in this thread Patch in this message | | | Subject | Re: [RFC][PATCH] slub: Check for page NULL before doing the node_match check | From | Steven Rostedt <> | Date | Thu, 17 Jan 2013 17:07:26 -0500 |
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On Thu, 2013-01-17 at 21:51 +0000, Christoph Lameter wrote:
> Ditto which leaves us with:
Except...
> > Index: linux/mm/slub.c > =================================================================== > --- linux.orig/mm/slub.c 2013-01-17 15:49:57.417491975 -0600 > +++ linux/mm/slub.c 2013-01-17 15:50:49.010287150 -0600 > @@ -1993,8 +1993,9 @@ static inline void flush_slab(struct kme > deactivate_slab(s, c->page, c->freelist); > > c->tid = next_tid(c->tid); > - c->page = NULL; > c->freelist = NULL;
+ /* + * Preemption may be enabled here, and if the task is preempted + * other tasks require that freelist is NULL if page is NULL. + */
> + barrier(); > + c->page = NULL; > } > > /*
-- Steve
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