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| author | Chuck Lever | 2015-09-24 09:34:21 +0200 |
|---|---|---|
| committer | Doug Ledford | 2015-09-25 16:46:51 +0200 |
| commit | bb6c96d72879fe1f674a804eb95b891def4ace61 (patch) | |
| tree | 5377d9e4b36358f4ddb6e4f43909005c2a9a5b85 /net/sunrpc/xprtrdma/fmr_ops.c | |
| parent | Merge tag 'v4.3-rc2' into k.o/for-4.3-v1 (diff) | |
| download | kernel-qcow2-linux-bb6c96d72879fe1f674a804eb95b891def4ace61.tar.gz kernel-qcow2-linux-bb6c96d72879fe1f674a804eb95b891def4ace61.tar.xz kernel-qcow2-linux-bb6c96d72879fe1f674a804eb95b891def4ace61.zip | |
xprtrdma: Replace global lkey with lkey local to PD
The core API has changed so that devices that do not have a global
DMA lkey automatically create an mr, per-PD, and make that lkey
available. The global DMA lkey interface is going away in favor of
the per-PD DMA lkey.
The per-PD DMA lkey is always available. Convert xprtrdma to use the
device's per-PD DMA lkey for regbufs, no matter which memory
registration scheme is in use.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Cc: linux-nfs <linux-nfs@vger.kernel.org>
Acked-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'net/sunrpc/xprtrdma/fmr_ops.c')
| -rw-r--r-- | net/sunrpc/xprtrdma/fmr_ops.c | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/net/sunrpc/xprtrdma/fmr_ops.c b/net/sunrpc/xprtrdma/fmr_ops.c index cb25c89da623..f1e8dafbd507 100644 --- a/net/sunrpc/xprtrdma/fmr_ops.c +++ b/net/sunrpc/xprtrdma/fmr_ops.c @@ -39,25 +39,6 @@ static int fmr_op_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep, struct rpcrdma_create_data_internal *cdata) { - struct ib_device_attr *devattr = &ia->ri_devattr; - struct ib_mr *mr; - - /* Obtain an lkey to use for the regbufs, which are - * protected from remote access. - */ - if (devattr->device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY) { - ia->ri_dma_lkey = ia->ri_device->local_dma_lkey; - } else { - mr = ib_get_dma_mr(ia->ri_pd, IB_ACCESS_LOCAL_WRITE); - if (IS_ERR(mr)) { - pr_err("%s: ib_get_dma_mr for failed with %lX\n", - __func__, PTR_ERR(mr)); - return -ENOMEM; - } - ia->ri_dma_lkey = ia->ri_dma_mr->lkey; - ia->ri_dma_mr = mr; - } - return 0; } |