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authorChuck Lever <chuck.lever@oracle.com>2015-12-16 17:23:03 -0500
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2015-12-18 15:34:33 -0500
commit73eee9b2de1fa08f2a82bb32ac4ec5e605716a91 (patch)
tree663803384a95f717607a6945f7c018343367f1f2 /net/sunrpc
parent7c7a5390dc6c8d89fc368424b69a4eef8e43f411 (diff)
downloadlinux-73eee9b2de1fa08f2a82bb32ac4ec5e605716a91.tar.bz2
xprtrdma: Add ro_unmap_sync method for all-physical registration
physical's ro_unmap is synchronous already. The new ro_unmap_sync method just has to DMA unmap all MRs associated with the RPC request. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Tested-by: Devesh Sharma <devesh.sharma@avagotech.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/xprtrdma/physical_ops.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/net/sunrpc/xprtrdma/physical_ops.c b/net/sunrpc/xprtrdma/physical_ops.c
index 617b76f22154..dbb302ecf590 100644
--- a/net/sunrpc/xprtrdma/physical_ops.c
+++ b/net/sunrpc/xprtrdma/physical_ops.c
@@ -83,6 +83,18 @@ physical_op_unmap(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg)
return 1;
}
+/* DMA unmap all memory regions that were mapped for "req".
+ */
+static void
+physical_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req)
+{
+ struct ib_device *device = r_xprt->rx_ia.ri_device;
+ unsigned int i;
+
+ for (i = 0; req->rl_nchunks; --req->rl_nchunks)
+ rpcrdma_unmap_one(device, &req->rl_segments[i++]);
+}
+
static void
physical_op_destroy(struct rpcrdma_buffer *buf)
{
@@ -90,6 +102,7 @@ physical_op_destroy(struct rpcrdma_buffer *buf)
const struct rpcrdma_memreg_ops rpcrdma_physical_memreg_ops = {
.ro_map = physical_op_map,
+ .ro_unmap_sync = physical_op_unmap_sync,
.ro_unmap = physical_op_unmap,
.ro_open = physical_op_open,
.ro_maxpages = physical_op_maxpages,