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mm/slab.c: remove unneed check in cpuup_canceled 

nc is a member of percpu allocation memory, and cannot be NULL.

Link: http://lkml.kernel.org/r/1553159353-5056-1-git-send-email-lirongqing@baidu.com
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Li RongQing 2019-05-13 17:16:25 -07:00 committed by Linus Torvalds
parent a4d3f8916c
commit 517f9f1ee5
1 changed files with 2 additions and 4 deletions
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6
mm/slab.c
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@ -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);