[XFS] add swsusp support to xfs daemons

SGI Modid: 2.5.x-xfs:slinx:152354a

fs/xfs/linux/xfs_super.c

@@ -71,6 +71,7 @@
 #include <linux/namei.h>
 #include <linux/init.h>
 #include <linux/mount.h>
+#include <linux/suspend.h>
 
 STATIC struct quotactl_ops linvfs_qops;
 STATIC struct super_operations linvfs_sops;
@@ -401,6 +402,9 @@ syncd(void *arg)
 	for (;;) {
 		set_current_state(TASK_INTERRUPTIBLE);
 		schedule_timeout(xfs_params.sync_interval);
+		/* swsusp */
+		if (current->flags & PF_FREEZE)
+			refrigerator(PF_IOTHREAD);
 		if (vfsp->vfs_flag & VFS_UMOUNT)
 			break;
 		if (vfsp->vfs_flag & VFS_RDONLY)