diff --git a/cgroups/cgroups.go b/cgroups/cgroups.go
index 9a49860..81e3eb5 100644
--- a/cgroups/cgroups.go
+++ b/cgroups/cgroups.go
@@ -12,13 +12,14 @@ type Cgroup struct {
 	Name   string `json:"name,omitempty"`
 	Parent string `json:"parent,omitempty"`
 
-	DeviceAccess bool   `json:"device_access,omitempty"` // name of parent cgroup or slice
-	Memory       int64  `json:"memory,omitempty"`        // Memory limit (in bytes)
-	MemorySwap   int64  `json:"memory_swap,omitempty"`   // Total memory usage (memory + swap); set `-1' to disable swap
-	CpuShares    int64  `json:"cpu_shares,omitempty"`    // CPU shares (relative weight vs. other containers)
-	CpuQuota     int64  `json:"cpu_quota,omitempty"`     // CPU hardcap limit (in usecs). Allowed cpu time in a given period.
-	CpuPeriod    int64  `json:"cpu_period,omitempty"`    // CPU period to be used for hardcapping (in usecs). 0 to use system default.
-	CpusetCpus   string `json:"cpuset_cpus,omitempty"`   // CPU to use
+	DeviceAccess      bool   `json:"device_access,omitempty"`      // name of parent cgroup or slice
+	Memory            int64  `json:"memory,omitempty"`             // Memory limit (in bytes)
+	MemoryReservation int64  `json:"memory_reservation,omitempty"` // Memory reservation or soft_limit (in bytes)
+	MemorySwap        int64  `json:"memory_swap,omitempty"`        // Total memory usage (memory + swap); set `-1' to disable swap
+	CpuShares         int64  `json:"cpu_shares,omitempty"`         // CPU shares (relative weight vs. other containers)
+	CpuQuota          int64  `json:"cpu_quota,omitempty"`          // CPU hardcap limit (in usecs). Allowed cpu time in a given period.
+	CpuPeriod         int64  `json:"cpu_period,omitempty"`         // CPU period to be used for hardcapping (in usecs). 0 to use system default.
+	CpusetCpus        string `json:"cpuset_cpus,omitempty"`        // CPU to use
 
 	UnitProperties [][2]string `json:"unit_properties,omitempty"` // systemd unit properties
 }
diff --git a/cgroups/fs/memory.go b/cgroups/fs/memory.go
index cf4bf5a..5315291 100644
--- a/cgroups/fs/memory.go
+++ b/cgroups/fs/memory.go
@@ -13,7 +13,7 @@ type memoryGroup struct {
 func (s *memoryGroup) Set(d *data) error {
 	dir, err := d.join("memory")
 	// only return an error for memory if it was not specified
-	if err != nil && (d.c.Memory != 0 || d.c.MemorySwap != 0) {
+	if err != nil && (d.c.Memory != 0 || d.c.MemoryReservation != 0 || d.c.MemorySwap != 0) {
 		return err
 	}
 	defer func() {
@@ -22,12 +22,15 @@ func (s *memoryGroup) Set(d *data) error {
 		}
 	}()
 
-	if d.c.Memory != 0 || d.c.MemorySwap != 0 {
+	// Only set values if some config was specified.
+	if d.c.Memory != 0 || d.c.MemoryReservation != 0 || d.c.MemorySwap != 0 {
 		if d.c.Memory != 0 {
 			if err := writeFile(dir, "memory.limit_in_bytes", strconv.FormatInt(d.c.Memory, 10)); err != nil {
 				return err
 			}
-			if err := writeFile(dir, "memory.soft_limit_in_bytes", strconv.FormatInt(d.c.Memory, 10)); err != nil {
+		}
+		if d.c.MemoryReservation != 0 {
+			if err := writeFile(dir, "memory.soft_limit_in_bytes", strconv.FormatInt(d.c.MemoryReservation, 10)); err != nil {
 				return err
 			}
 		}
diff --git a/cgroups/systemd/apply_systemd.go b/cgroups/systemd/apply_systemd.go
index 7c26080..e1246f6 100644
--- a/cgroups/systemd/apply_systemd.go
+++ b/cgroups/systemd/apply_systemd.go
@@ -121,6 +121,10 @@ func Apply(c *cgroups.Cgroup, pid int) (cgroups.ActiveCgroup, error) {
 		properties = append(properties,
 			systemd1.Property{"MemoryLimit", dbus.MakeVariant(uint64(c.Memory))})
 	}
+	if c.MemoryReservation != 0 {
+		properties = append(properties,
+			systemd1.Property{"MemorySoftLimit", dbus.MakeVariant(uint64(c.MemoryReservation))})
+	}
 	// TODO: MemorySwap not available in systemd
 
 	if c.CpuShares != 0 {