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IB/ipoib: Restore MM behavior in case of tx_ring allocation failure
author
Yuval Shaia
<yuval.shaia@oracle.com>
Wed, 13 Dec 2017 10:25:19 +0000
(12:25 +0200)
committer
Jason 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
patch
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diff --git
a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
index
87f4bd9
..
2c13123
100644
(file)
--- a/
drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/
drivers/infiniband/ulp/ipoib/ipoib_cm.c
@@
-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;
}