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| author | Chuck Lever <chuck.lever@oracle.com> | 2022-09-13 00:22:33 +0300 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2022-09-26 21:02:42 +0300 |
| commit | 81593c4dff32266102cd95cdc993576a6afe5650 (patch) | |
| tree | 11acabb0e9224c9ec00ec18cae7477da77aed3b5 | |
| parent | 7746b32f467b3813fb61faaab3258de35806a7ac (diff) | |
| download | linux-81593c4dff32266102cd95cdc993576a6afe5650.tar.xz | |
SUNRPC: Optimize svc_process()
Move exception handling code out of the hot path, and avoid the need
for a bswap of a non-constant.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
| -rw-r--r-- | net/sunrpc/svc.c | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c index 7c9a0d0b1230..4268145490a4 100644 --- a/net/sunrpc/svc.c +++ b/net/sunrpc/svc.c @@ -1434,8 +1434,7 @@ svc_process(struct svc_rqst *rqstp) { struct kvec *argv = &rqstp->rq_arg.head[0]; struct kvec *resv = &rqstp->rq_res.head[0]; - struct svc_serv *serv = rqstp->rq_server; - u32 dir; + __be32 dir; #if IS_ENABLED(CONFIG_FAIL_SUNRPC) if (!fail_sunrpc.ignore_server_disconnect && @@ -1450,7 +1449,7 @@ svc_process(struct svc_rqst *rqstp) rqstp->rq_next_page = &rqstp->rq_respages[1]; resv->iov_base = page_address(rqstp->rq_respages[0]); resv->iov_len = 0; - rqstp->rq_res.pages = rqstp->rq_respages + 1; + rqstp->rq_res.pages = rqstp->rq_next_page; rqstp->rq_res.len = 0; rqstp->rq_res.page_base = 0; rqstp->rq_res.page_len = 0; @@ -1458,18 +1457,17 @@ svc_process(struct svc_rqst *rqstp) rqstp->rq_res.tail[0].iov_base = NULL; rqstp->rq_res.tail[0].iov_len = 0; - dir = svc_getnl(argv); - if (dir != 0) { - /* direction != CALL */ - svc_printk(rqstp, "bad direction %d, dropping request\n", dir); - serv->sv_stats->rpcbadfmt++; + dir = svc_getu32(argv); + if (dir != rpc_call) + goto out_baddir; + if (!svc_process_common(rqstp, argv, resv)) goto out_drop; - } - - /* Returns 1 for send, 0 for drop */ - if (likely(svc_process_common(rqstp, argv, resv))) - return svc_send(rqstp); + return svc_send(rqstp); +out_baddir: + svc_printk(rqstp, "bad direction 0x%08x, dropping request\n", + be32_to_cpu(dir)); + rqstp->rq_server->sv_stats->rpcbadfmt++; out_drop: svc_drop(rqstp); return 0; |