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From: NeilBrown <neilb@suse.de>
To: Andrew Morton <akpm@osdl.org>
Date: Thu, 24 Aug 2006 16:36:50 +1000
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Cc: nfs@lists.sourceforge.net, linux-kernel@vger.kernel.org
Subject: [PATCH 004 of 11] knfsd: Protect update to sn_nrthreads with lock_kernel
References: <20060824162917.3600.patches@notabene>
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Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./fs/nfsd/nfsctl.c |    2 ++
 1 file changed, 2 insertions(+)

diff .prev/fs/nfsd/nfsctl.c ./fs/nfsd/nfsctl.c
--- .prev/fs/nfsd/nfsctl.c	2006-08-24 16:24:21.000000000 +1000
+++ ./fs/nfsd/nfsctl.c	2006-08-24 16:24:47.000000000 +1000
@@ -532,7 +532,9 @@ static ssize_t write_ports(struct file *
 			/* Decrease the count, but don't shutdown the
 			 * the service
 			 */
+			lock_kernel();
 			nfsd_serv->sv_nrthreads--;
+			unlock_kernel();
 		}
 		return err;
 	}