From: Chuck Lever Date: Wed, 16 Dec 2015 22:23:03 +0000 (-0500) Subject: xprtrdma: Add ro_unmap_sync method for all-physical registration X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=73eee9b2de1fa08f2a82bb32ac4ec5e605716a91;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git 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 Tested-by: Devesh Sharma Signed-off-by: Anna Schumaker --- 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,