The patch titled
make vmstat cpu-unplug safe
has been added to the -mm tree. Its filename is
make-vmstat-cpu-unplug-safe.patch
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: make vmstat cpu-unplug safe
From: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
When accessing cpu_online_map, we should prevent dynamic changing
of cpu_online_map by get_online_cpus().
Unfortunately, all_vm_events() doesn't do that.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Acked-by: Christoph Lameter <clameter@xxxxxxx>
Cc: Gautham R Shenoy <ego@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmstat.c | 2 ++
1 file changed, 2 insertions(+)
diff -puN mm/vmstat.c~make-vmstat-cpu-unplug-safe mm/vmstat.c
--- a/mm/vmstat.c~make-vmstat-cpu-unplug-safe
+++ a/mm/vmstat.c
@@ -41,7 +41,9 @@ static void sum_vm_events(unsigned long
*/
void all_vm_events(unsigned long *ret)
{
+ get_online_cpus();
sum_vm_events(ret, &cpu_online_map);
+ put_online_cpus();
}
EXPORT_SYMBOL_GPL(all_vm_events);
_
Patches currently in -mm which might be from kosaki.motohiro@xxxxxxxxxxxxxx are
linux-next.patch
make-vmstat-cpu-unplug-safe.patch
page-allocator-inlnie-some-__alloc_pages-wrappers.patch
mm-hugetlbc-fix-duplicate-variable.patch
make-mm-memoryc-print_bad_pte-static.patch
mm-swapfilec-make-code-static.patch
make-mm-rmapc-anon_vma_cachep-static.patch
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