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authorLi RongQing <lirongqing@baidu.com>2019-05-14 03:16:25 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-05-14 19:47:45 +0300
commit517f9f1ee5ed0a05d0f6f884f6d9b5c46ac5a810 (patch)
tree4d697c043807115551b7598f81898b83be97f354 /mm/slab.c
parenta4d3f8916c65b63e6b9457cdec74ceaaff7e6b12 (diff)
downloadlinux-517f9f1ee5ed0a05d0f6f884f6d9b5c46ac5a810.tar.xz
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>
Diffstat (limited to 'mm/slab.c')
-rw-r--r--mm/slab.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/mm/slab.c b/mm/slab.c
index e9eaa8fce231..da4068a95307 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);