From: Bodo Stroesser <bstroesser@xxxxxxxxxxxxxx>
Date: Thu, 09 Oct 2014 13:07:33 +0200
Subject: [nfs-utils] [PATCH 2/3] rpc.mountd: set nonblocking mode with libtirpc
If mountd is built with libtirpc the tcp listeners and the sockets
waiting for UDP messages are not in non-blocking mode. Thus if running
with multiple threads (-t XX), all threads will wake up from select on
a connection request or a UDP message, but only one thread will succeed.
All others will wait on accept() or read() for the next event.
Signed-off-by: Bodo Stroesser <bstroesser@xxxxxxxxxxxxxx>
---
--- nfs-utils-1.3.1/support/nfs/svc_create.c 2014-10-08 21:39:01.000000000 +0200
+++ nfs-utils-1.3.1/support/nfs/svc_create.c 2014-10-08 22:20:02.000000000 +0200
@@ -277,6 +277,12 @@
"(%s, %u, %s)", name, version, nconf->nc_netid);
return 0;
}
+ if (svcsock_nonblock(xprt->xp_fd) < 0) {
+ /* close() already done by svcsock_nonblock() */
+ xprt->xp_fd = RPC_ANYFD;
+ SVC_DESTROY(xprt);
+ return 0;
+ }
if (!svc_reg(xprt, program, version, dispatch, nconf)) {
/* svc_reg(3) destroys @xprt in this case */
@@ -332,6 +338,7 @@
int fd;
fd = svc_create_sock(ai->ai_addr, ai->ai_addrlen, nconf);
+ fd = svcsock_nonblock(fd);
if (fd == -1)
goto out_free;
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