diff --git a/solver/llbsolver/file/refmanager.go b/solver/llbsolver/file/refmanager.go
index e1c58c1e5..b9f3b2ea3 100644
--- a/solver/llbsolver/file/refmanager.go
+++ b/solver/llbsolver/file/refmanager.go
@@ -11,12 +11,13 @@ import (
 	"github.com/pkg/errors"
 )
 
-func NewRefManager(cm cache.Manager) *RefManager {
-	return &RefManager{cm: cm}
+func NewRefManager(cm cache.Manager, name string) *RefManager {
+	return &RefManager{cm: cm, desc: name}
 }
 
 type RefManager struct {
-	cm cache.Manager
+	cm   cache.Manager
+	desc string
 }
 
 func (rm *RefManager) Prepare(ctx context.Context, ref fileoptypes.Ref, readonly bool, g session.Group) (_ fileoptypes.Mount, rerr error) {
@@ -33,7 +34,13 @@ func (rm *RefManager) Prepare(ctx context.Context, ref fileoptypes.Ref, readonly
 		return &Mount{m: m, readonly: readonly}, nil
 	}
 
-	mr, err := rm.cm.New(ctx, ir, g, cache.WithDescription("fileop target"), cache.CachePolicyRetain)
+	desc := "fileop target"
+
+	if d := rm.desc; d != "" {
+		desc = d
+	}
+
+	mr, err := rm.cm.New(ctx, ir, g, cache.WithDescription(desc), cache.CachePolicyRetain)
 	if err != nil {
 		return nil, err
 	}
diff --git a/solver/llbsolver/ops/file.go b/solver/llbsolver/ops/file.go
index 27deec5ca..b1f3e0cfe 100644
--- a/solver/llbsolver/ops/file.go
+++ b/solver/llbsolver/ops/file.go
@@ -46,7 +46,7 @@ func NewFileOp(v solver.Vertex, op *pb.Op_File, cm cache.Manager, parallelism *s
 		md:          cm,
 		numInputs:   len(v.Inputs()),
 		w:           w,
-		solver:      NewFileOpSolver(w, &file.Backend{}, file.NewRefManager(cm)),
+		solver:      NewFileOpSolver(w, &file.Backend{}, file.NewRefManager(cm, v.Name())),
 		parallelism: parallelism,
 	}, nil
 }