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NFS: Fix false error return from nfs_callback_up() if ipv6.ko is not available

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Clear "ret" if the error return from svc_create_xprt(AF_INET6) was
-EAFNOSUPORT.  Otherwise, callback start-up will succeed, but
nfs_callback_up() will return -EAFNOSUPPORT anyway, and the first
NFSv4 mount attempt after a reboot will fail.

Bug introduced by commit f738f517 in 2.6.30-rc1.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever 2009-06-17 18:02:10 -07:00 committed by Trond Myklebust
parent a21bdd9b96
commit 18fc316419
1 changed files with 3 additions and 1 deletions
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fs/nfs/callback.c
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@ -127,7 +127,9 @@ int nfs_callback_up(void)
nfs_callback_tcpport6 = ret;
dprintk("NFS: Callback listener port = %u (af %u)\n",
nfs_callback_tcpport6, PF_INET6);
} else if (ret != -EAFNOSUPPORT)
} else if (ret == -EAFNOSUPPORT)
ret = 0;
else
goto out_err;
#endif /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */