[PATCH AUTOSEL 4.19 032/219] RDMA/vmw_pvrdma: Use atomic memory allocation in create AH

Sasha Levin
2019-11-22T06:29:53Z

From: Gal Pressman <galpress@amazon.com>

[ Upstream commit a276a4d93bf1580d737f38d1810e5f4b166f3edd ]

Create address handle callback should not sleep, use GFP_ATOMIC instead of
GFP_KERNEL for memory allocation.

Fixes: 29c8d9eba550 ("IB: Add vmw_pvrdma driver")
Cc: Adit Ranadive <aditr@vmware.com>
Signed-off-by: Gal Pressman <galpress@amazon.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.c b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.c
index b65d10b0a8759..f4cb5cf26006f 100644
--- a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.c
+++ b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.c
@@ -555,7 +555,7 @@ struct ib_ah *pvrdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr,
if (!atomic_add_unless(&dev->num_ahs, 1, dev->dsr->caps.max_ah))
return ERR_PTR(-ENOMEM);

- ah = kzalloc(sizeof(*ah), GFP_KERNEL);
+ ah = kzalloc(sizeof(*ah), GFP_ATOMIC);
if (!ah) {
atomic_dec(&dev->num_ahs);
return ERR_PTR(-ENOMEM);
--
2.20.1