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Fix coverity defects: CID 147565-147567

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coverity scan CID:147567, Type:dereference null return value
coverity scan CID:147566, Type:dereference null return value
coverity scan CID:147565, Type:dereference null return value

Reviewed by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: cao.xuewen <cao.xuewen@zte.com.cn>
Closes #5166
This commit is contained in:
cao
2016-10-08 04:19:43 +08:00
committed by Brian Behlendorf
parent 482cd9ee69
commit ccc92611b1
3 changed files with 8 additions and 4 deletions
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module/zfs/bqueue.c
+2 -1
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@@ -87,13 +87,14 @@ bqueue_enqueue(bqueue_t *q, void *data, uint64_t item_size)
void *
bqueue_dequeue(bqueue_t *q)
{
void *ret;
void *ret = NULL;
uint64_t item_size;
mutex_enter(&q->bq_lock);
while (q->bq_size == 0) {
cv_wait(&q->bq_pop_cv, &q->bq_lock);
}
ret = list_remove_head(&q->bq_list);
ASSERT3P(ret, !=, NULL);
item_size = obj2node(q, ret)->bqn_size;
q->bq_size -= item_size;
mutex_exit(&q->bq_lock);