From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Fri, 24 Jun 2016 14:55:49 +0000 (-0400)
Subject: SUNRPC: Micro optimisation for svc_data_ready
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4720b0703a0dfcd6da6a308ea71aaacc55beade7;p=linux-beck.git

SUNRPC: Micro optimisation for svc_data_ready

Don't call svc_xprt_enqueue() if the XPT_DATA flag is already set.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---

diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 03134708deeb..338d6fe1103d 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -409,8 +409,8 @@ static void svc_data_ready(struct sock *sk)
 			svsk, sk,
 			test_bit(XPT_BUSY, &svsk->sk_xprt.xpt_flags));
 		svsk->sk_odata(sk);
-		set_bit(XPT_DATA, &svsk->sk_xprt.xpt_flags);
-		svc_xprt_enqueue(&svsk->sk_xprt);
+		if (!test_and_set_bit(XPT_DATA, &svsk->sk_xprt.xpt_flags))
+			svc_xprt_enqueue(&svsk->sk_xprt);
 	}
 }