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authorNeilBrown <neilb@suse.de>2007-05-09 02:34:55 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 12:30:54 -0700
commit05ed690efbb28b54af79f97af8c9705e82a6fbd7 (patch)
treef6c5a437cb8f8c0a666cd1f1a13e39d1fa354146 /net/sunrpc
parentc5e434c98b49f4877ea1614a629499e082b1a818 (diff)
downloadop-kernel-dev-05ed690efbb28b54af79f97af8c9705e82a6fbd7.zip
op-kernel-dev-05ed690efbb28b54af79f97af8c9705e82a6fbd7.tar.gz
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 <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/svcsock.c21
1 files 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) {
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