[src/trunk]: src/sys/nfs nfs_rcvunlock: don't wake up all waiters.

[yamt <yamt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/886909aebd92
branches:  trunk
changeset: 759840:886909aebd92
user:      yamt <yamt%NetBSD.org@localhost>
date:      Fri Dec 17 22:22:00 2010 +0000

description:
nfs_rcvunlock: don't wake up all waiters.

diffstat:

 sys/nfs/nfs_socket.c |  8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diffs (40 lines):

diff -r 3843eeb5a296 -r 886909aebd92 sys/nfs/nfs_socket.c
--- a/sys/nfs/nfs_socket.c      Fri Dec 17 22:08:18 2010 +0000
+++ b/sys/nfs/nfs_socket.c      Fri Dec 17 22:22:00 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: nfs_socket.c,v 1.187 2010/03/02 23:19:09 pooka Exp $   */
+/*     $NetBSD: nfs_socket.c,v 1.188 2010/12/17 22:22:00 yamt Exp $    */
 
 /*
  * Copyright (c) 1989, 1991, 1993, 1995
@@ -39,7 +39,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: nfs_socket.c,v 1.187 2010/03/02 23:19:09 pooka Exp $");
+__KERNEL_RCSID(0, "$NetBSD: nfs_socket.c,v 1.188 2010/12/17 22:22:00 yamt Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_nfs.h"
@@ -906,10 +906,12 @@
                 * receive lock.
                 */
                if (rep->r_mrep != NULL) {
+                       cv_signal(&nmp->nm_rcvcv);
                        error = EALREADY;
                        break;
                }
                if (nfs_sigintr(rep->r_nmp, rep, rep->r_lwp)) {
+                       cv_signal(&nmp->nm_rcvcv);
                        error = EINTR;
                        break;
                }
@@ -944,7 +946,7 @@
        if ((nmp->nm_iflag & NFSMNT_RCVLOCK) == 0)
                panic("nfs rcvunlock");
        nmp->nm_iflag &= ~NFSMNT_RCVLOCK;
-       cv_broadcast(&nmp->nm_rcvcv);
+       cv_signal(&nmp->nm_rcvcv);
        mutex_exit(&nmp->nm_lock);
 }