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| author | Chuck Lever <chuck.lever@oracle.com> | 2015-12-16 17:23:03 -0500 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2015-12-18 15:34:33 -0500 |
| commit | 73eee9b2de1fa08f2a82bb32ac4ec5e605716a91 (patch) | |
| tree | 663803384a95f717607a6945f7c018343367f1f2 /net | |
| parent | 7c7a5390dc6c8d89fc368424b69a4eef8e43f411 (diff) | |
| download | linux-stable-73eee9b2de1fa08f2a82bb32ac4ec5e605716a91.tar.gz linux-stable-73eee9b2de1fa08f2a82bb32ac4ec5e605716a91.tar.bz2 linux-stable-73eee9b2de1fa08f2a82bb32ac4ec5e605716a91.zip | |
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')
| -rw-r--r-- | net/sunrpc/xprtrdma/physical_ops.c | 13 |
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, |