--- linux-2.6.23.8-clean/drivers/md/dm-ioctl.c	2008-06-11 15:56:18.000000000 -0700
+++ linux-2.6.23.8-patched/drivers/md/dm-ioctl.c	2008-06-11 16:01:36.000000000 -0700
@@ -1516,3 +1516,35 @@ void dm_interface_exit(void)
 	dm_hash_exit();
 }
 
+/**
+ * dm_copy_name_and_uuid - Copy mapped device name & uuid into supplied buffers
+ * @md: Pointer to mapped_device
+ * @name: Buffer (size DM_NAME_LEN) for name
+ * @uuid: Buffer (size DM_UUID_LEN) for uuid or empty string if uuid not defined
+ */
+int dm_copy_name_and_uuid(struct mapped_device *md, char *name, char *uuid)
+{
+	int r = 0;
+	struct hash_cell *hc;
+
+	if (!md)
+		return -ENXIO;
+
+	dm_get(md);
+	down_read(&_hash_lock);
+	hc = dm_get_mdptr(md);
+	if (!hc || hc->md != md) {
+		r = -ENXIO;
+		goto out;
+	}
+
+	strcpy(name, hc->name);
+	strcpy(uuid, hc->uuid ? : "");
+
+out:
+	up_read(&_hash_lock);
+	dm_put(md);
+
+	return r;
+}
+EXPORT_SYMBOL_GPL(dm_copy_name_and_uuid);
diff -urpN linux-2.6.23.8-clean/drivers/md/Kconfig linux-2.6.23.8-patched/drivers/md/Kconfig
--- linux-2.6.23.8-clean/drivers/md/Kconfig	2007-11-21 05:27:59.000000000 -0600
+++ linux-2.6.23.8-patched/drivers/md/Kconfig	2007-11-21 08:17:09.000000000 -0600
@@ -276,4 +276,13 @@ config DM_DELAY
 
 	If unsure, say N.
 
+config DM_DDSNAP
+	tristate "Distributed Data Snapshot target (EXPERIMENTAL)"
+	depends on BLK_DEV_DM && EXPERIMENTAL
+	---help---
+	  This device-mapper target allows you to take multiple simultaneous
+	  read/write snapshots of a clustered or non-clustered block devices.
+	  If unsure, say N.
+
+
 endif # MD
diff -urpN linux-2.6.23.8-clean/drivers/md/Makefile linux-2.6.23.8-patched/drivers/md/Makefile
--- linux-2.6.23.8-clean/drivers/md/Makefile	2007-11-21 04:55:11.000000000 -0600
+++ linux-2.6.23.8-patched/drivers/md/Makefile	2007-11-21 08:13:34.000000000 -0600
@@ -39,6 +39,7 @@ obj-$(CONFIG_DM_MULTIPATH_RDAC)	+= dm-rd
 obj-$(CONFIG_DM_SNAPSHOT)	+= dm-snapshot.o
 obj-$(CONFIG_DM_MIRROR)		+= dm-mirror.o
 obj-$(CONFIG_DM_ZERO)		+= dm-zero.o
+obj-$(CONFIG_DM_DDSNAP)		+= dm-ddsnap.o
 
 quiet_cmd_unroll = UNROLL  $@
       cmd_unroll = $(PERL) $(srctree)/$(src)/unroll.pl $(UNROLL) \
diff -urpN linux-2.6.23.8-clean/include/linux/prctl.h linux-2.6.23.8-patched/include/linux/prctl.h
--- linux-2.6.23.8-clean/include/linux/prctl.h	2007-11-21 04:55:11.000000000 -0600
+++ linux-2.6.23.8-patched/include/linux/prctl.h	2007-11-21 08:24:06.000000000 -0600
@@ -63,4 +63,8 @@
 #define PR_GET_SECCOMP	21
 #define PR_SET_SECCOMP	22
 
+/* set process less throttleL: see PF_LESS_THROTTLE */
+#define PR_SET_LESS_THROTTLE           23
+#define PR_SET_MEMALLOC			24
+
 #endif /* _LINUX_PRCTL_H */
diff -urpN linux-2.6.23.8-clean/kernel/sys.c linux-2.6.23.8-patched/kernel/sys.c
--- linux-2.6.23.8-clean/kernel/sys.c	2007-11-21 04:55:11.000000000 -0600
+++ linux-2.6.23.8-patched/kernel/sys.c	2007-11-21 08:13:34.000000000 -0600
@@ -2262,7 +2262,16 @@ asmlinkage long sys_prctl(int option, un
 		case PR_SET_SECCOMP:
 			error = prctl_set_seccomp(arg2);
 			break;
-
+		case PR_SET_LESS_THROTTLE: {
+			current->flags |= PF_LESS_THROTTLE;
+			return 0;
+		}
+			
+		case PR_SET_MEMALLOC: {
+			current->flags |= PF_MEMALLOC;
+			printk("set PF_MEMALLOC for process %s[%i]\n", current->comm, current->pid);
+			return 0;
+		}
 		default:
 			error = -EINVAL;
 			break;