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Subject[PATCH] Rename PF_IOTHREAD.
FromNigel Cunningham <>
DateMon, 19 Apr 2004 16:54:31 +1000
Hi.

A few weeks ago, Pavel and I agreed that PF_IOTHREAD should be renamed
to PF_NOFREEZE. This reflects the fact that some threads so marked
aren't actually used for IO while suspending, but simply shouldn't be
frozen. This patch, against 2.6.5 vanilla, applies that change. In the
refrigerator calls, the actual value doesn't matter (so long as it's
non-zero) and it makes more sense to use PF_FREEZE so I've used that.

Please apply.

Nigel

diff -ruN linux-2.6.5/arch/i386/kernel/apm.c linux-2.6.5-NoFreeze/arch/i386/kernel/apm.c
--- linux-2.6.5/arch/i386/kernel/apm.c	2004-04-17 03:20:58.000000000 +1000
+++ linux-2.6.5-NoFreeze/arch/i386/kernel/apm.c	2004-04-19 16:37:30.000000000 +1000
@@ -1701,7 +1701,7 @@
 
 	daemonize("kapmd");
 
-	current->flags |= PF_IOTHREAD;
+	current->flags |= PF_NOFREEZE;
 
 #ifdef CONFIG_SMP
 	/* 2002/08/01 - WT
diff -ruN linux-2.6.5/drivers/block/loop.c linux-2.6.5-NoFreeze/drivers/block/loop.c
--- linux-2.6.5/drivers/block/loop.c	2004-04-17 03:21:04.000000000 +1000
+++ linux-2.6.5-NoFreeze/drivers/block/loop.c	2004-04-19 16:42:24.000000000 +1000
@@ -472,7 +472,7 @@
 	 * hence, it mustn't be stopped at all
 	 * because it could be indirectly used during suspension
 	 */
-	current->flags |= PF_IOTHREAD;
+	current->flags |= PF_NOFREEZE;
 
 	set_user_nice(current, -20);
 
diff -ruN linux-2.6.5/drivers/input/serio/serio.c linux-2.6.5-NoFreeze/drivers/input/serio/serio.c
--- linux-2.6.5/drivers/input/serio/serio.c	2004-04-17 03:21:05.000000000 +1000
+++ linux-2.6.5-NoFreeze/drivers/input/serio/serio.c	2004-04-19 16:44:21.000000000 +1000
@@ -154,7 +154,7 @@
 		serio_handle_events();
 		wait_event_interruptible(serio_wait, !list_empty(&serio_event_list)); 
 		if (current->flags & PF_FREEZE)
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 	} while (!signal_pending(current));
 
 	printk(KERN_DEBUG "serio: kseriod exiting\n");
diff -ruN linux-2.6.5/drivers/md/md.c linux-2.6.5-NoFreeze/drivers/md/md.c
--- linux-2.6.5/drivers/md/md.c	2004-04-17 03:21:06.000000000 +1000
+++ linux-2.6.5-NoFreeze/drivers/md/md.c	2004-04-19 16:44:45.000000000 +1000
@@ -2711,7 +2711,7 @@
 		wait_event_interruptible(thread->wqueue,
 					 test_bit(THREAD_WAKEUP, &thread->flags));
 		if (current->flags & PF_FREEZE)
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 
 		clear_bit(THREAD_WAKEUP, &thread->flags);
 
diff -ruN linux-2.6.5/drivers/net/8139too.c linux-2.6.5-NoFreeze/drivers/net/8139too.c
--- linux-2.6.5/drivers/net/8139too.c	2004-04-17 03:21:07.000000000 +1000
+++ linux-2.6.5-NoFreeze/drivers/net/8139too.c	2004-04-19 16:39:00.000000000 +1000
@@ -1619,7 +1619,7 @@
 			timeout = interruptible_sleep_on_timeout (&tp->thr_wait, timeout);
 			/* make swsusp happy with our thread */
 			if (current->flags & PF_FREEZE)
-				refrigerator(PF_IOTHREAD);
+				refrigerator(PF_FREEZE);
 		} while (!signal_pending (current) && (timeout > 0));
 
 		if (signal_pending (current)) {
diff -ruN linux-2.6.5/drivers/net/irda/sir_kthread.c linux-2.6.5-NoFreeze/drivers/net/irda/sir_kthread.c
--- linux-2.6.5/drivers/net/irda/sir_kthread.c	2004-02-06 15:27:33.000000000 +1100
+++ linux-2.6.5-NoFreeze/drivers/net/irda/sir_kthread.c	2004-04-19 16:40:12.000000000 +1000
@@ -137,7 +137,7 @@
 
 		/* make swsusp happy with our thread */
 		if (current->flags & PF_FREEZE)
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 
 		run_irda_queue();
 	}
diff -ruN linux-2.6.5/drivers/net/irda/stir4200.c linux-2.6.5-NoFreeze/drivers/net/irda/stir4200.c
--- linux-2.6.5/drivers/net/irda/stir4200.c	2004-03-16 09:20:03.000000000 +1100
+++ linux-2.6.5-NoFreeze/drivers/net/irda/stir4200.c	2004-04-19 16:40:32.000000000 +1000
@@ -774,7 +774,7 @@
 
 			write_reg(stir, REG_CTRL1, CTRL1_TXPWD|CTRL1_RXPWD);
 
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 
 			if (change_speed(stir, stir->speed))
 				break;
diff -ruN linux-2.6.5/drivers/net/wireless/airo.c linux-2.6.5-NoFreeze/drivers/net/wireless/airo.c
--- linux-2.6.5/drivers/net/wireless/airo.c	2004-04-17 03:21:09.000000000 +1000
+++ linux-2.6.5-NoFreeze/drivers/net/wireless/airo.c	2004-04-19 16:39:48.000000000 +1000
@@ -2883,7 +2883,7 @@
 
 		/* make swsusp happy with our thread */
 		if (current->flags & PF_FREEZE)
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 
 		if (test_bit(JOB_DIE, &ai->flags))
 			break;
diff -ruN linux-2.6.5/drivers/pcmcia/cs.c linux-2.6.5-NoFreeze/drivers/pcmcia/cs.c
--- linux-2.6.5/drivers/pcmcia/cs.c	2004-04-17 03:21:10.000000000 +1000
+++ linux-2.6.5-NoFreeze/drivers/pcmcia/cs.c	2004-04-19 16:44:33.000000000 +1000
@@ -720,7 +720,7 @@
 
 		schedule();
 		if (current->flags & PF_FREEZE)
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 
 		if (!skt->thread)
 			break;
diff -ruN linux-2.6.5/drivers/scsi/libata-core.c linux-2.6.5-NoFreeze/drivers/scsi/libata-core.c
--- linux-2.6.5/drivers/scsi/libata-core.c	2004-04-17 03:21:11.000000000 +1000
+++ linux-2.6.5-NoFreeze/drivers/scsi/libata-core.c	2004-04-19 16:41:09.000000000 +1000
@@ -2629,7 +2629,7 @@
                         flush_signals(current);
                         
                 if (current->flags & PF_FREEZE)
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
                                                         
 
                 if ((timeout < 0) || (ap->time_to_die))
diff -ruN linux-2.6.5/drivers/scsi/scsi_error.c linux-2.6.5-NoFreeze/drivers/scsi/scsi_error.c
--- linux-2.6.5/drivers/scsi/scsi_error.c	2004-04-17 03:21:11.000000000 +1000
+++ linux-2.6.5-NoFreeze/drivers/scsi/scsi_error.c	2004-04-19 16:41:33.000000000 +1000
@@ -1620,7 +1620,7 @@
 
 	daemonize("scsi_eh_%d", shost->host_no);
 
-	current->flags |= PF_IOTHREAD;
+	current->flags |= PF_NOFREEZE;
 
 	shost->eh_wait = &sem;
 	shost->ehandler = current;
diff -ruN linux-2.6.5/drivers/usb/core/hub.c linux-2.6.5-NoFreeze/drivers/usb/core/hub.c
--- linux-2.6.5/drivers/usb/core/hub.c	2004-04-17 03:21:16.000000000 +1000
+++ linux-2.6.5-NoFreeze/drivers/usb/core/hub.c	2004-04-19 16:44:08.000000000 +1000
@@ -1142,7 +1142,7 @@
 		hub_events();
 		wait_event_interruptible(khubd_wait, !list_empty(&hub_event_list)); 
 		if (current->flags & PF_FREEZE)
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 	} while (!signal_pending(current));
 
 	dbg("hub_thread exiting");
diff -ruN linux-2.6.5/drivers/usb/storage/usb.c linux-2.6.5-NoFreeze/drivers/usb/storage/usb.c
--- linux-2.6.5/drivers/usb/storage/usb.c	2004-04-17 03:21:19.000000000 +1000
+++ linux-2.6.5-NoFreeze/drivers/usb/storage/usb.c	2004-04-19 16:41:57.000000000 +1000
@@ -277,7 +277,7 @@
 	 */
 	daemonize("usb-storage");
 
-	current->flags |= PF_IOTHREAD;
+	current->flags |= PF_NOFREEZE;
 
 	unlock_kernel();
 
diff -ruN linux-2.6.5/fs/jbd/journal.c linux-2.6.5-NoFreeze/fs/jbd/journal.c
--- linux-2.6.5/fs/jbd/journal.c	2004-01-13 14:17:40.000000000 +1100
+++ linux-2.6.5-NoFreeze/fs/jbd/journal.c	2004-04-19 16:47:00.000000000 +1000
@@ -172,7 +172,7 @@
 		 */
 		jbd_debug(1, "Now suspending kjournald\n");
 		spin_unlock(&journal->j_state_lock);
-		refrigerator(PF_IOTHREAD);
+		refrigerator(PF_FREEZE);
 		spin_lock(&journal->j_state_lock);
 	} else {
 		/*
diff -ruN linux-2.6.5/fs/jfs/jfs_logmgr.c linux-2.6.5-NoFreeze/fs/jfs/jfs_logmgr.c
--- linux-2.6.5/fs/jfs/jfs_logmgr.c	2004-04-17 03:21:20.000000000 +1000
+++ linux-2.6.5-NoFreeze/fs/jfs/jfs_logmgr.c	2004-04-19 16:46:14.000000000 +1000
@@ -2330,7 +2330,7 @@
 		}
 		if (current->flags & PF_FREEZE) {
 			spin_unlock_irq(&log_redrive_lock);
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 		} else {
 			add_wait_queue(&jfs_IO_thread_wait, &wq);
 			set_current_state(TASK_INTERRUPTIBLE);
diff -ruN linux-2.6.5/fs/jfs/jfs_txnmgr.c linux-2.6.5-NoFreeze/fs/jfs/jfs_txnmgr.c
--- linux-2.6.5/fs/jfs/jfs_txnmgr.c	2004-04-17 03:21:20.000000000 +1000
+++ linux-2.6.5-NoFreeze/fs/jfs/jfs_txnmgr.c	2004-04-19 16:46:39.000000000 +1000
@@ -2813,7 +2813,7 @@
 
 		if (current->flags & PF_FREEZE) {
 			LAZY_UNLOCK(flags);
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 		} else {
 			DECLARE_WAITQUEUE(wq, current);
 
@@ -3017,7 +3017,7 @@
 
 		if (current->flags & PF_FREEZE) {
 			TXN_UNLOCK();
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 		} else {
 			DECLARE_WAITQUEUE(wq, current);
 
diff -ruN linux-2.6.5/fs/xfs/linux/xfs_buf.c linux-2.6.5-NoFreeze/fs/xfs/linux/xfs_buf.c
--- linux-2.6.5/fs/xfs/linux/xfs_buf.c	2004-03-16 09:20:14.000000000 +1100
+++ linux-2.6.5-NoFreeze/fs/xfs/linux/xfs_buf.c	2004-04-19 16:45:54.000000000 +1000
@@ -1633,7 +1633,7 @@
 	do {
 		/* swsusp */
 		if (current->flags & PF_FREEZE)
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 
 		set_current_state(TASK_INTERRUPTIBLE);
 		schedule_timeout(xfs_flush_interval);
diff -ruN linux-2.6.5/fs/xfs/linux/xfs_super.c linux-2.6.5-NoFreeze/fs/xfs/linux/xfs_super.c
--- linux-2.6.5/fs/xfs/linux/xfs_super.c	2004-03-16 09:20:14.000000000 +1100
+++ linux-2.6.5-NoFreeze/fs/xfs/linux/xfs_super.c	2004-04-19 16:45:36.000000000 +1000
@@ -464,7 +464,7 @@
 		schedule_timeout(xfs_syncd_interval);
 		/* swsusp */
 		if (current->flags & PF_FREEZE)
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 		if (vfsp->vfs_flag & VFS_UMOUNT)
 			break;
 		if (vfsp->vfs_flag & VFS_RDONLY)
diff -ruN linux-2.6.5/include/linux/sched.h linux-2.6.5-NoFreeze/include/linux/sched.h
--- linux-2.6.5/include/linux/sched.h	2004-04-17 03:21:25.000000000 +1000
+++ linux-2.6.5-NoFreeze/include/linux/sched.h	2004-04-19 16:38:34.000000000 +1000
@@ -522,7 +522,7 @@
 #define PF_FLUSHER	0x00002000	/* responsible for disk writeback */
 
 #define PF_FREEZE	0x00004000	/* this task should be frozen for suspend */
-#define PF_IOTHREAD	0x00008000	/* this thread is needed for doing I/O to swap */
+#define PF_NOFREEZE	0x00008000	/* this thread should not be frozen */
 #define PF_FROZEN	0x00010000	/* frozen for system suspend */
 #define PF_FSTRANS	0x00020000	/* inside a filesystem transaction */
 #define PF_KSWAPD	0x00040000	/* I am kswapd */
diff -ruN linux-2.6.5/kernel/power/process.c linux-2.6.5-NoFreeze/kernel/power/process.c
--- linux-2.6.5/kernel/power/process.c	2004-01-13 14:16:35.000000000 +1100
+++ linux-2.6.5-NoFreeze/kernel/power/process.c	2004-04-19 16:47:24.000000000 +1000
@@ -28,7 +28,7 @@
 static inline int freezeable(struct task_struct * p)
 {
 	if ((p == current) || 
-	    (p->flags & PF_IOTHREAD) || 
+	    (p->flags & PF_NOFREEZE) || 
 	    (p->state == TASK_ZOMBIE) ||
 	    (p->state == TASK_DEAD))
 		return 0;
diff -ruN linux-2.6.5/kernel/sched.c linux-2.6.5-NoFreeze/kernel/sched.c
--- linux-2.6.5/kernel/sched.c	2004-04-17 03:21:26.000000000 +1000
+++ linux-2.6.5-NoFreeze/kernel/sched.c	2004-04-19 16:47:36.000000000 +1000
@@ -2778,7 +2778,7 @@
 		migration_req_t *req;
 
 		if (current->flags & PF_FREEZE)
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 
 		spin_lock_irq(&rq->lock);
 		head = &rq->migration_queue;
diff -ruN linux-2.6.5/kernel/softirq.c linux-2.6.5-NoFreeze/kernel/softirq.c
--- linux-2.6.5/kernel/softirq.c	2004-04-17 03:21:26.000000000 +1000
+++ linux-2.6.5-NoFreeze/kernel/softirq.c	2004-04-19 16:43:24.000000000 +1000
@@ -309,7 +309,7 @@
 static int ksoftirqd(void * __bind_cpu)
 {
 	set_user_nice(current, 19);
-	current->flags |= PF_IOTHREAD;
+	current->flags |= PF_NOFREEZE;
 
 	set_current_state(TASK_INTERRUPTIBLE);
 
diff -ruN linux-2.6.5/kernel/workqueue.c linux-2.6.5-NoFreeze/kernel/workqueue.c
--- linux-2.6.5/kernel/workqueue.c	2004-04-17 03:21:26.000000000 +1000
+++ linux-2.6.5-NoFreeze/kernel/workqueue.c	2004-04-19 16:43:39.000000000 +1000
@@ -181,7 +181,7 @@
 	struct k_sigaction sa;
 	sigset_t blocked;
 
-	current->flags |= PF_IOTHREAD;
+	current->flags |= PF_NOFREEZE;
 
 	set_user_nice(current, -10);
 
diff -ruN linux-2.6.5/mm/pdflush.c linux-2.6.5-NoFreeze/mm/pdflush.c
--- linux-2.6.5/mm/pdflush.c	2004-04-17 03:21:26.000000000 +1000
+++ linux-2.6.5-NoFreeze/mm/pdflush.c	2004-04-19 16:48:07.000000000 +1000
@@ -107,7 +107,7 @@
 
 		schedule();
 		if (current->flags & PF_FREEZE) {
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 			spin_lock_irq(&pdflush_lock);
 			continue;
 		}
diff -ruN linux-2.6.5/mm/vmscan.c linux-2.6.5-NoFreeze/mm/vmscan.c
--- linux-2.6.5/mm/vmscan.c	2004-04-17 03:21:26.000000000 +1000
+++ linux-2.6.5-NoFreeze/mm/vmscan.c	2004-04-19 16:47:54.000000000 +1000
@@ -1052,7 +1052,7 @@
 		struct page_state ps;
 
 		if (current->flags & PF_FREEZE)
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 		prepare_to_wait(&pgdat->kswapd_wait, &wait, TASK_INTERRUPTIBLE);
 		schedule();
 		finish_wait(&pgdat->kswapd_wait, &wait);
diff -ruN linux-2.6.5/net/bluetooth/bnep/core.c linux-2.6.5-NoFreeze/net/bluetooth/bnep/core.c
--- linux-2.6.5/net/bluetooth/bnep/core.c	2004-04-17 03:21:26.000000000 +1000
+++ linux-2.6.5-NoFreeze/net/bluetooth/bnep/core.c	2004-04-19 16:42:58.000000000 +1000
@@ -458,7 +458,7 @@
 
         daemonize("kbnepd %s", dev->name);
 	set_user_nice(current, -15);
-	current->flags |= PF_IOTHREAD;
+	current->flags |= PF_NOFREEZE;
 
         set_fs(KERNEL_DS);
 
diff -ruN linux-2.6.5/net/bluetooth/cmtp/core.c linux-2.6.5-NoFreeze/net/bluetooth/cmtp/core.c
--- linux-2.6.5/net/bluetooth/cmtp/core.c	2004-04-17 03:21:26.000000000 +1000
+++ linux-2.6.5-NoFreeze/net/bluetooth/cmtp/core.c	2004-04-19 16:43:13.000000000 +1000
@@ -293,7 +293,7 @@
 
 	daemonize("kcmtpd_ctr_%d", session->num);
 	set_user_nice(current, -15);
-	current->flags |= PF_IOTHREAD;
+	current->flags |= PF_NOFREEZE;
 
 	set_fs(KERNEL_DS);
 
diff -ruN linux-2.6.5/net/bluetooth/rfcomm/core.c linux-2.6.5-NoFreeze/net/bluetooth/rfcomm/core.c
--- linux-2.6.5/net/bluetooth/rfcomm/core.c	2004-04-17 03:21:26.000000000 +1000
+++ linux-2.6.5-NoFreeze/net/bluetooth/rfcomm/core.c	2004-04-19 16:42:43.000000000 +1000
@@ -1819,7 +1819,7 @@
 
 	daemonize("krfcommd");
 	set_user_nice(current, -10);
-	current->flags |= PF_IOTHREAD;
+	current->flags |= PF_NOFREEZE;
 
 	set_fs(KERNEL_DS);
 
diff -ruN linux-2.6.5/net/sunrpc/sched.c linux-2.6.5-NoFreeze/net/sunrpc/sched.c
--- linux-2.6.5/net/sunrpc/sched.c	2004-04-17 03:21:30.000000000 +1000
+++ linux-2.6.5-NoFreeze/net/sunrpc/sched.c	2004-04-19 16:45:16.000000000 +1000
@@ -976,7 +976,7 @@
 		}
 		__rpc_schedule();
 		if (current->flags & PF_FREEZE)
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 
 		if (++rounds >= 64) {	/* safeguard */
 			schedule();
diff -ruN linux-2.6.5/net/sunrpc/svcsock.c linux-2.6.5-NoFreeze/net/sunrpc/svcsock.c
--- linux-2.6.5/net/sunrpc/svcsock.c	2004-01-13 14:17:13.000000000 +1100
+++ linux-2.6.5-NoFreeze/net/sunrpc/svcsock.c	2004-04-19 16:45:05.000000000 +1000
@@ -1209,7 +1209,7 @@
 		schedule_timeout(timeout);
 
 		if (current->flags & PF_FREEZE)
-			refrigerator(PF_IOTHREAD);
+			refrigerator(PF_FREEZE);
 
 		spin_lock_bh(&serv->sv_lock);
 		remove_wait_queue(&rqstp->rq_wait, &wait);

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