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xprtrdma: Simplify rpcrdma_mr_pop

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Clean up: rpcrdma_mr_pop call sites check if the list is empty
first. Let's replace the list_empty with less costly logic.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Chuck Lever
2019-08-19 18:44:04 -04:00
committed by Anna Schumaker
parent 395790566e
commit 265a38d461
4 changed files with 11 additions and 21 deletions
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7
net/sunrpc/xprtrdma/rpc_rdma.c
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@@ -841,12 +841,7 @@ rpcrdma_marshal_req(struct rpcrdma_xprt *r_xprt, struct rpc_rqst *rqst)
* chunks. Very likely the connection has been replaced,
* so these registrations are invalid and unusable.
*/
while (unlikely(!list_empty(&req->rl_registered))) {
struct rpcrdma_mr *mr;
mr = rpcrdma_mr_pop(&req->rl_registered);
rpcrdma_mr_recycle(mr);
}
frwr_reset(req);
/* This implementation supports the following combinations
* of chunk lists in one RPC-over-RDMA Call message: