The patch titled
Subject: mm/slab.c: remove unneed check in cpuup_canceled
has been added to the -mm tree. Its filename is
mm-slab-remove-unneed-check-in-cpuup_canceled.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-slab-remove-unneed-check-in-cpuup_canceled.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-slab-remove-unneed-check-in-cpuup_canceled.patch
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------------------------------------------------------
From: Li RongQing <lirongqing@xxxxxxxxx>
Subject: 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@xxxxxxxxx
Signed-off-by: Li RongQing <lirongqing@xxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/slab.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- a/mm/slab.c~mm-slab-remove-unneed-check-in-cpuup_canceled
+++ a/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);
_
Patches currently in -mm which might be from lirongqing@xxxxxxxxx are
mm-slab-remove-unneed-check-in-cpuup_canceled.patch
ipc-prevent-lockup-on-alloc_msg-and-free_msg.patch
