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Fix coverity defects: CID 147553

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CID 147553: Type:Dereference null return value

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: cao.xuewen <cao.xuewen@zte.com.cn>
Closes #5305
This commit is contained in:
cao 2016-11-02 01:20:24 +08:00 committed by Brian Behlendorf
parent 2bac68145f
commit 981b21260e
1 changed files with 2 additions and 1 deletions
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3
module/zfs/dmu_tx.c
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@ -1249,7 +1249,8 @@ dmu_tx_unassign(dmu_tx_t *tx)
* Walk the transaction's hold list, removing the hold on the
* associated dnode, and notifying waiters if the refcount drops to 0.
*/
for (txh = list_head(&tx->tx_holds); txh != tx->tx_needassign_txh;
for (txh = list_head(&tx->tx_holds);
txh && txh != tx->tx_needassign_txh;
txh = list_next(&tx->tx_holds, txh)) {
dnode_t *dn = txh->txh_dnode;