IB/rdmavt: Support creating qps with GFP_NOIO flag
The current code is problematic when the QP creation and ipoib is
used to support NFS and NFS desires to do IO for paging purposes.
In that case, the GFP_KERNEL allocation within create_qp causes
a deadlock in tight memory situations.
This fix adds support to create queue pair with GFP_NOIO flag for
connected mode only to cleanly fail the create queue pair in those
situations.
This was previously fixed in qib but needed to get ported to hfi1.
This patch handles that for both hardwares in the new rdmavt common
layer.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/include/rdma/rdma_vt.h b/include/rdma/rdma_vt.h
index 725778a..70a9596 100644
--- a/include/rdma/rdma_vt.h
+++ b/include/rdma/rdma_vt.h
@@ -223,7 +223,8 @@
const char * (*get_card_name)(struct rvt_dev_info *rdi);
struct pci_dev * (*get_pci_dev)(struct rvt_dev_info *rdi);
unsigned (*free_all_qps)(struct rvt_dev_info *rdi);
- void * (*qp_priv_alloc)(struct rvt_dev_info *rdi, struct rvt_qp *qp);
+ void * (*qp_priv_alloc)(struct rvt_dev_info *rdi, struct rvt_qp *qp,
+ gfp_t gfp);
void (*qp_priv_free)(struct rvt_dev_info *rdi, struct rvt_qp *qp);
void (*notify_qp_reset)(struct rvt_qp *qp);
@@ -234,7 +235,7 @@
void (*notify_new_ah)(struct ib_device *, struct ib_ah_attr *,
struct rvt_ah *);
int (*alloc_qpn)(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,
- enum ib_qp_type type, u8 port);
+ enum ib_qp_type type, u8 port, gfp_t gfp);
};
struct rvt_dev_info {