Messages in this thread Patch in this message | | | From | WANG Chao <> | Subject | [PATCH 2/3] RAS/CEC: make ces_entered smp safe | Date | Thu, 18 Apr 2019 11:41:14 +0800 |
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ces_entered should be put in a critical section to avoid race condition.
Signed-off-by: WANG Chao <chao.wang@ucloud.cn> --- drivers/ras/cec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/ras/cec.c b/drivers/ras/cec.c index 2e0bf1269c31..702e4c02c713 100644 --- a/drivers/ras/cec.c +++ b/drivers/ras/cec.c @@ -286,10 +286,10 @@ int cec_add_elem(u64 pfn) if (!ce_arr.array || ce_arr.disabled) return -ENODEV; - ca->ces_entered++; - mutex_lock(&ce_mutex); + ca->ces_entered++; + if (ca->n == MAX_ELEMS) WARN_ON(!del_lru_elem_unlocked(ca)); -- 2.21.0
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