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Subject[PATCH] mm, slab: remove unneed check in cpuup_canceled
Date
nc is a member of percpu allocation memory, and impossible NULL

Signed-off-by: Li RongQing <lirongqing@baidu.com>
---
mm/slab.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/mm/slab.c b/mm/slab.c
index 28652e4218e0..f1420e14875a 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -990,10 +990,8 @@ static void cpuup_canceled(long cpu)

/* cpu is dead; no one can alloc from it. */
nc = per_cpu_ptr(cachep->cpu_cache, cpu);
- if (nc) {
- free_block(cachep, nc->entry, nc->avail, node, &list);
- nc->avail = 0;
- }
+ free_block(cachep, nc->entry, nc->avail, node, &list);
+ nc->avail = 0;

if (!cpumask_empty(mask)) {
spin_unlock_irq(&n->list_lock);
--
2.16.2
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