[RFC][PATCH 6/7] Freezer: Remove PF_NOFREEZE from bluetooth threads

["Rafael J. Wysocki" <rjw@sisk.pl>]

From: Rafael J. Wysocki <rjw@sisk.pl>

Remove PF_NOFREEZE from the bluetooth threads, adding try_to_freeze() calls as
required.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
---
 net/bluetooth/bnep/core.c   |    6 ++++--
 net/bluetooth/cmtp/core.c   |    4 +++-
 net/bluetooth/hidp/core.c   |    4 +++-
 net/bluetooth/rfcomm/core.c |    4 +++-
 4 files changed, 13 insertions(+), 5 deletions(-)

Index: linux-2.6.20-mm2/net/bluetooth/bnep/core.c
===================================================================
--- linux-2.6.20-mm2.orig/net/bluetooth/bnep/core.c	2007-02-23 00:26:58.000000000 +0100
+++ linux-2.6.20-mm2/net/bluetooth/bnep/core.c	2007-02-23 00:30:47.000000000 +0100
@@ -39,6 +39,7 @@
 #include <linux/errno.h>
 #include <linux/smp_lock.h>
 #include <linux/net.h>
+#include <linux/freezer.h>
 #include <net/sock.h>
 
 #include <linux/socket.h>
@@ -473,11 +474,12 @@ static int bnep_session(void *arg)
 
 	daemonize("kbnepd %s", dev->name);
 	set_user_nice(current, -15);
-	current->flags |= PF_NOFREEZE;
 
 	init_waitqueue_entry(&wait, current);
 	add_wait_queue(sk->sk_sleep, &wait);
 	while (!atomic_read(&s->killed)) {
+		try_to_freeze();
+
 		set_current_state(TASK_INTERRUPTIBLE);
 
 		// RX
Index: linux-2.6.20-mm2/net/bluetooth/cmtp/core.c
===================================================================
--- linux-2.6.20-mm2.orig/net/bluetooth/cmtp/core.c	2007-02-23 00:26:58.000000000 +0100
+++ linux-2.6.20-mm2/net/bluetooth/cmtp/core.c	2007-02-23 00:31:01.000000000 +0100
@@ -34,6 +34,7 @@
 #include <linux/ioctl.h>
 #include <linux/file.h>
 #include <linux/init.h>
+#include <linux/freezer.h>
 #include <net/sock.h>
 
 #include <linux/isdn/capilli.h>
@@ -287,11 +288,12 @@ static int cmtp_session(void *arg)
 
 	daemonize("kcmtpd_ctr_%d", session->num);
 	set_user_nice(current, -15);
-	current->flags |= PF_NOFREEZE;
 
 	init_waitqueue_entry(&wait, current);
 	add_wait_queue(sk->sk_sleep, &wait);
 	while (!atomic_read(&session->terminate)) {
+		try_to_freeze();
+
 		set_current_state(TASK_INTERRUPTIBLE);
 
 		if (sk->sk_state != BT_CONNECTED)
Index: linux-2.6.20-mm2/net/bluetooth/hidp/core.c
===================================================================
--- linux-2.6.20-mm2.orig/net/bluetooth/hidp/core.c	2007-02-23 00:26:58.000000000 +0100
+++ linux-2.6.20-mm2/net/bluetooth/hidp/core.c	2007-02-23 00:31:17.000000000 +0100
@@ -35,6 +35,7 @@
 #include <linux/file.h>
 #include <linux/init.h>
 #include <linux/wait.h>
+#include <linux/freezer.h>
 #include <net/sock.h>
 
 #include <linux/input.h>
@@ -547,13 +548,14 @@ static int hidp_session(void *arg)
 
 	daemonize("khidpd_%04x%04x", vendor, product);
 	set_user_nice(current, -15);
-	current->flags |= PF_NOFREEZE;
 
 	init_waitqueue_entry(&ctrl_wait, current);
 	init_waitqueue_entry(&intr_wait, current);
 	add_wait_queue(ctrl_sk->sk_sleep, &ctrl_wait);
 	add_wait_queue(intr_sk->sk_sleep, &intr_wait);
 	while (!atomic_read(&session->terminate)) {
+		try_to_freeze();
+
 		set_current_state(TASK_INTERRUPTIBLE);
 
 		if (ctrl_sk->sk_state != BT_CONNECTED || intr_sk->sk_state != BT_CONNECTED)
Index: linux-2.6.20-mm2/net/bluetooth/rfcomm/core.c
===================================================================
--- linux-2.6.20-mm2.orig/net/bluetooth/rfcomm/core.c	2007-02-23 00:26:58.000000000 +0100
+++ linux-2.6.20-mm2/net/bluetooth/rfcomm/core.c	2007-02-23 00:31:43.000000000 +0100
@@ -37,6 +37,7 @@
 #include <linux/device.h>
 #include <linux/net.h>
 #include <linux/mutex.h>
+#include <linux/freezer.h>
 
 #include <net/sock.h>
 #include <asm/uaccess.h>
@@ -1851,6 +1852,8 @@ static void rfcomm_worker(void)
 	BT_DBG("");
 
 	while (!atomic_read(&terminate)) {
+		try_to_freeze();
+
 		if (!test_bit(RFCOMM_SCHED_WAKEUP, &rfcomm_event)) {
 			/* No pending events. Let's sleep.
 			 * Incoming connections and data will wake us up. */
@@ -1937,7 +1940,6 @@ static int rfcomm_run(void *unused)
 
 	daemonize("krfcommd");
 	set_user_nice(current, -10);
-	current->flags |= PF_NOFREEZE;
 
 	BT_DBG("");