From: Tejun Heo Date: Wed, 11 Mar 2009 05:36:54 +0000 (+0900) Subject: percpu: fix spurious alignment WARN in legacy SMP percpu allocator X-Git-Tag: firefly_0821_release~15214^2~1^2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=60db56422043aaa455ac7f858ce23c273220f9d9;p=firefly-linux-kernel-4.4.55.git percpu: fix spurious alignment WARN in legacy SMP percpu allocator Impact: remove spurious WARN on legacy SMP percpu allocator Commit f2a8205c4ef1af917d175c36a4097ae5587791c8 incorrectly added too tight WARN_ON_ONCE() on alignments for UP and legacy SMP percpu allocator. Commit e317603694bfd17b28a40de9d65e1a4ec12f816e fixed it for UP but legacy SMP allocator was forgotten. Fix it. Signed-off-by: Tejun Heo Reported-by: Sachin P. Sant --- diff --git a/mm/allocpercpu.c b/mm/allocpercpu.c index 3653c570232b..1882923bc706 100644 --- a/mm/allocpercpu.c +++ b/mm/allocpercpu.c @@ -120,7 +120,7 @@ void *__alloc_percpu(size_t size, size_t align) * on it. Larger alignment should only be used for module * percpu sections on SMP for which this path isn't used. */ - WARN_ON_ONCE(align > __alignof__(unsigned long long)); + WARN_ON_ONCE(align > SMP_CACHE_BYTES); if (unlikely(!pdata)) return NULL;