Merge pull request #48254 from kannon92/size-memory-backed-volumes-ga

[KEP-1967] - update docs for GA

Author: k8s-ci-robot

content/en/docs/concepts/storage/volumes.md

@@ -242,19 +242,12 @@ the `emptyDir.medium` field to `"Memory"`, Kubernetes mounts a tmpfs (RAM-backed
 filesystem) for you instead.  While tmpfs is very fast be aware that, unlike
 disks, files you write count against the memory limit of the container that wrote them.
 
-
 A size limit can be specified for the default medium, which limits the capacity
 of the `emptyDir` volume. The storage is allocated from [node ephemeral
 storage](/docs/concepts/configuration/manage-resources-containers/#setting-requests-and-limits-for-local-ephemeral-storage).
 If that is filled up from another source (for example, log files or image
 overlays), the `emptyDir` may run out of capacity before this limit.
-
-{{< note >}}
-You can specify a size for memory backed volumes, provided that the `SizeMemoryBackedVolumes`
-[feature gate](/docs/reference/command-line-tools-reference/feature-gates/)
-is enabled in your cluster (this has been beta, and active by default, since the Kubernetes 1.22 release).
-If you don't specify a volume size, memory backed volumes are sized to node allocatable memory.
-{{< /note>}}
+If no size is specified, memory backed volumes are sized to node allocatable memory.
 
 {{< caution >}}
 Please check [here](/docs/concepts/configuration/manage-resources-containers/#memory-backed-emptydir)
@@ -281,6 +274,27 @@ spec:
       sizeLimit: 500Mi
 ```
 
+#### emptyDir memory configuration example
+
+```yaml
+apiVersion: v1
+kind: Pod
+metadata:
+  name: test-pd
+spec:
+  containers:
+  - image: registry.k8s.io/test-webserver
+    name: test-container
+    volumeMounts:
+    - mountPath: /cache
+      name: cache-volume
+  volumes:
+  - name: cache-volume
+    emptyDir:
+      sizeLimit: 500Mi
+      medium: Memory
+```
+
 ### fc (fibre channel) {#fc}
 
 An `fc` volume type allows an existing fibre channel block storage volume

content/en/docs/reference/command-line-tools-reference/feature-gates/size-memory-backed-volumes.md

@@ -13,6 +13,10 @@ stages:
   - stage: beta
     defaultValue: true
     fromVersion: "1.22"
+    toVersion: "1.31"
+  - stage: stable
+    defaultValue: true
+    fromVersion: "1.32"
 ---
 Enable kubelets to determine the size limit for
 memory-backed volumes (mainly `emptyDir` volumes).