manifest: LayerInfos: preallocate the slice

Signed-off-by: Kir Kolyshkin <[email protected]>
containers · Aug 5, 2024 · 5ffda1d · 5ffda1d
1 parent a9d10af
commit 5ffda1d
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/manifest/docker_schema2.go b/manifest/docker_schema2.go
@@ -202,7 +202,7 @@ func (m *Schema2) ConfigInfo() types.BlobInfo {
 // The Digest field is guaranteed to be provided; Size may be -1.
 // WARNING: The list may contain duplicates, and they are semantically relevant.
 func (m *Schema2) LayerInfos() []LayerInfo {
-	blobs := []LayerInfo{}
+	blobs := make([]LayerInfo, 0, len(m.LayersDescriptors))
 	for _, layer := range m.LayersDescriptors {
 		blobs = append(blobs, LayerInfo{
 			BlobInfo:   BlobInfoFromSchema2Descriptor(layer),

diff --git a/manifest/oci.go b/manifest/oci.go
@@ -95,7 +95,7 @@ func (m *OCI1) ConfigInfo() types.BlobInfo {
 // The Digest field is guaranteed to be provided; Size may be -1.
 // WARNING: The list may contain duplicates, and they are semantically relevant.
 func (m *OCI1) LayerInfos() []LayerInfo {
-	blobs := []LayerInfo{}
+	blobs := make([]LayerInfo, 0, len(m.Layers))
 	for _, layer := range m.Layers {
 		blobs = append(blobs, LayerInfo{
 			BlobInfo:   BlobInfoFromOCI1Descriptor(layer),