From 05ed690efbb28b54af79f97af8c9705e82a6fbd7 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 9 May 2007 02:34:55 -0700 Subject: [PATCH] knfsd: simplify a 'while' condition in svcsock.c This while loop has an overly complex condition, which performs a couple of assignments. This hurts readability. We don't really need a loop at all. We can just return -EAGAIN and (providing we set SK_DATA), the function will be called again. So discard the loop, make the complex conditional become a few clear function calls, and hopefully improve readability. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- net/sunrpc/svcsock.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index fdb1386..5baf48d 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -788,15 +788,20 @@ svc_udp_recvfrom(struct svc_rqst *rqstp) } clear_bit(SK_DATA, &svsk->sk_flags); - while ((err = kernel_recvmsg(svsk->sk_sock, &msg, NULL, - 0, 0, MSG_PEEK | MSG_DONTWAIT)) < 0 || - (skb = skb_recv_datagram(svsk->sk_sk, 0, 1, &err)) == NULL) { - if (err == -EAGAIN) { - svc_sock_received(svsk); - return err; + skb = NULL; + err = kernel_recvmsg(svsk->sk_sock, &msg, NULL, + 0, 0, MSG_PEEK | MSG_DONTWAIT); + if (err >= 0) + skb = skb_recv_datagram(svsk->sk_sk, 0, 1, &err); + + if (skb == NULL) { + if (err != -EAGAIN) { + /* possibly an icmp error */ + dprintk("svc: recvfrom returned error %d\n", -err); + set_bit(SK_DATA, &svsk->sk_flags); } - /* possibly an icmp error */ - dprintk("svc: recvfrom returned error %d\n", -err); + svc_sock_received(svsk); + return -EAGAIN; } rqstp->rq_addrlen = sizeof(rqstp->rq_addr); if (skb->tstamp.tv64 == 0) { -- 2.7.4