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xprtrdma: Add a "register_external" op for each memreg mode

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There is very little common processing among the different external
memory registration functions. Have rpcrdma_create_chunks() call
the registration method directly. This removes a stack frame and a
switch statement from the external registration path.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Devesh Sharma <Devesh.Sharma@Emulex.Com>
Tested-by: Meghana Cheripady <Meghana.Cheripady@Emulex.Com>
Tested-by: Veeresh U. Kokatnur <veereshuk@chelsio.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Chuck Lever
2015-03-30 14:34:39 -04:00
committed by Anna Schumaker
parent 1c9351ee0e
commit 9c1b4d775f
6 changed files with 160 additions and 169 deletions
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5
net/sunrpc/xprtrdma/rpc_rdma.c
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@@ -187,6 +187,7 @@ rpcrdma_create_chunks(struct rpc_rqst *rqst, struct xdr_buf *target,
struct rpcrdma_write_array *warray = NULL;
struct rpcrdma_write_chunk *cur_wchunk = NULL;
__be32 *iptr = headerp->rm_body.rm_chunks;
int (*map)(struct rpcrdma_xprt *, struct rpcrdma_mr_seg *, int, bool);
if (type == rpcrdma_readch || type == rpcrdma_areadch) {
/* a read chunk - server will RDMA Read our memory */
@@ -209,9 +210,9 @@ rpcrdma_create_chunks(struct rpc_rqst *rqst, struct xdr_buf *target,
if (nsegs < 0)
return nsegs;
map = r_xprt->rx_ia.ri_ops->ro_map;
do {
n = rpcrdma_register_external(seg, nsegs,
cur_wchunk != NULL, r_xprt);
n = map(r_xprt, seg, nsegs, cur_wchunk != NULL);
if (n <= 0)
goto out;
if (cur_rchunk) { /* read */