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cifs: detect dead connections only when echoes are enabled.
We can detect server unresponsiveness only if echoes are enabled. Echoes can be disabled under two scenarios: 1. The connection is low on credits, so we've disabled echoes/oplocks. 2. The connection has not seen any request till now (other than negotiate/sess-setup), which is when we enable these two, based on the credits available. So this fix will check for dead connection, only when echo is enabled. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> CC: <stable@vger.kernel.org> # v5.8+ Signed-off-by: Steve French <stfrench@microsoft.com>
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@ -476,6 +476,7 @@ server_unresponsive(struct TCP_Server_Info *server)
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*/
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if ((server->tcpStatus == CifsGood ||
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server->tcpStatus == CifsNeedNegotiate) &&
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(!server->ops->can_echo || server->ops->can_echo(server)) &&
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time_after(jiffies, server->lstrp + 3 * server->echo_interval)) {
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cifs_server_dbg(VFS, "has not responded in %lu seconds. Reconnecting...\n",
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(3 * server->echo_interval) / HZ);
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