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Subject[patch 42/67] do not free non slab allocated per_cpu_pageset

-stable review patch. If anyone has any objections, please let us know.

------------------
From: David Rientjes <rientjes@cs.washington.edu>

Stops panic associated with attempting to free a non slab-allocated
per_cpu_pageset.

Signed-off-by: David Rientjes <rientjes@cs.washington.edu>
Acked-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
mm/page_alloc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

--- linux-2.6.18.orig/mm/page_alloc.c
+++ linux-2.6.18/mm/page_alloc.c
@@ -1845,8 +1845,10 @@ static inline void free_zone_pagesets(in
for_each_zone(zone) {
struct per_cpu_pageset *pset = zone_pcp(zone, cpu);

+ /* Free per_cpu_pageset if it is slab allocated */
+ if (pset != &boot_pageset[cpu])
+ kfree(pset);
zone_pcp(zone, cpu) = NULL;
- kfree(pset);
}
}

--
-
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