pkg/cri: optimize slice initialization

Some of this code was originally added in b7b1200,
which likely meant to initialize the slice with a length to reduce allocations,
however, instead of initializing with a zero-length and a capacity, it
initialized the slice with a fixed length, which was corrected in commit
0c63c42.

This patch initializes the slice with a zero-length and expected capacity.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 4f39b16)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

pkg/cri/server/helpers.go

@@ -470,7 +470,7 @@ func copyResourcesToStatus(spec *runtimespec.Spec, status containerstore.Status)
 		}
 
 		if spec.Linux.Resources.HugepageLimits != nil {
-			hugepageLimits := make([]*runtime.HugepageLimit, 0)
+			hugepageLimits := make([]*runtime.HugepageLimit, 0, len(spec.Linux.Resources.HugepageLimits))
 			for _, l := range spec.Linux.Resources.HugepageLimits {
 				hugepageLimits = append(hugepageLimits, &runtime.HugepageLimit{
 					PageSize: l.Pagesize,

pkg/cri/store/container/status.go

@@ -220,7 +220,7 @@ func deepCopyOf(s Status) Status {
 	}
 	copy.Resources = &runtime.ContainerResources{}
 	if s.Resources != nil && s.Resources.Linux != nil {
-		hugepageLimits := make([]*runtime.HugepageLimit, 0)
+		hugepageLimits := make([]*runtime.HugepageLimit, 0, len(s.Resources.Linux.HugepageLimits))
 		for _, l := range s.Resources.Linux.HugepageLimits {
 			if l != nil {
 				hugepageLimits = append(hugepageLimits, &runtime.HugepageLimit{