IB/ipoib: Restore MM behavior in case of tx_ring allocation failure
authorYuval Shaia <yuval.shaia@oracle.com>
Wed, 13 Dec 2017 10:25:19 +0000 (12:25 +0200)
committerJason Gunthorpe <jgg@mellanox.com>
Wed, 13 Dec 2017 17:31:57 +0000 (10:31 -0700)
memalloc_noio_save modifies the behavior of MM, we must restore it after
we are done.

Fixes: d83187dda9b9 ("IB/IPoIB: Convert IPoIB to memalloc_noio_* calls")
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
drivers/infiniband/ulp/ipoib/ipoib_cm.c

index 87f4bd99cdf7102e1e6e43c23a03615103d13b2c..2c13123bfd69499e3ac7661871d176c57979664b 100644 (file)
@@ -1145,6 +1145,7 @@ static int ipoib_cm_tx_init(struct ipoib_cm_tx *p, u32 qpn,
        noio_flag = memalloc_noio_save();
        p->tx_ring = vzalloc(ipoib_sendq_size * sizeof(*p->tx_ring));
        if (!p->tx_ring) {
+               memalloc_noio_restore(noio_flag);
                ret = -ENOMEM;
                goto err_tx;
        }