fix timeout on close operation when pending signal

fs/cifs/CHANGES

@@ -2,7 +2,8 @@ Version 1.10
 ------------
 Fix reconnection (and certain failed mounts) to properly wake up the
 blocked users thread so it does not seem hung (in some cases was blocked
-until the cifs receive timeout expired).
+until the cifs receive timeout expired). Fix spurious error logging
+to kernel log when application with open network files killed. 
 
 Version 1.09
 ------------

fs/cifs/cifsfs.c

@@ -653,6 +653,7 @@ static int cifs_oplock_thread(void * dummyarg)
 		spin_lock(&GlobalMid_Lock);
 		if(list_empty(&GlobalOplock_Q)) {
 			spin_unlock(&GlobalMid_Lock);
+			set_current_state(TASK_INTERRUPTIBLE);
 			schedule_timeout(39*HZ);
 		} else {
 			oplock_item = list_entry(GlobalOplock_Q.next, 

fs/cifs/cifssmb.c

@@ -822,8 +822,11 @@ CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id)
 	rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
 			 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
 	if (rc) {
+		if(rc!=-EINTR) {
+			/* EINTR is expected when user ctl-c to kill app */
 			cERROR(1, ("Send error in Close = %d", rc));
 		}
+	}
 	if (pSMB)
 		cifs_buf_release(pSMB);
 

fs/cifs/connect.c

@@ -223,6 +223,7 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
 			csocket = server->ssocket;
 			continue;
 		} else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) {
+			set_current_state(TASK_INTERRUPTIBLE);
 			schedule_timeout(1); /* minimum sleep to prevent looping
 				allowing socket to clear and app threads to set
 				tcpStatus CifsNeedReconnect if server hung */
@@ -277,6 +278,7 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
 				} else {
 					/* give server a second to
 					clean up before reconnect attempt */
+					set_current_state(TASK_INTERRUPTIBLE);
 					schedule_timeout(HZ);
 					/* always try 445 first on reconnect
 					since we get NACK on some if we ever

fs/cifs/transport.c

@@ -151,6 +151,7 @@ smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
 	set_fs(get_ds());
 	rc = sock_sendmsg(ssocket, &smb_msg, smb_buf_length + 4);
 	while((rc == -ENOSPC) || (rc == -EAGAIN)) {
+		set_current_state(TASK_INTERRUPTIBLE);
 		schedule_timeout(HZ/2);
 		rc = sock_sendmsg(ssocket, &smb_msg, smb_buf_length + 4);
 	}
@@ -233,16 +234,23 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
 		timeout = 15 * HZ;
 	/* wait for 15 seconds or until woken up due to response arriving or 
 	   due to last connection to this server being unmounted */
-
+	if (signal_pending(current)) {
+		/* if signal pending do not hold up user for full smb timeout
+		but we still give response a change to complete */
+		if(midQ->midState & MID_REQUEST_SUBMITTED) {
+			set_current_state(TASK_UNINTERRUPTIBLE);
+			timeout = schedule_timeout(HZ);
+		}
+	} else { /* use normal timeout */
 		timeout = wait_event_interruptible_timeout(ses->server->response_q,
 			(midQ->midState & MID_RESPONSE_RECEIVED) || 
 			((ses->server->tcpStatus != CifsGood) &&
 			 (ses->server->tcpStatus != CifsNew)),
 			timeout);
+	}
 	if (signal_pending(current)) {
-		cFYI(1, ("CIFS: caught signal"));
 		DeleteMidQEntry(midQ);
-		return -EINTR;
+		return -EINTR; /* BB are we supposed to return -ERESTARTSYS ? */
 	} else {  /* BB spinlock protect this against races with demux thread */
 		spin_lock(&GlobalMid_Lock);
 		if (midQ->resp_buf) {