9 files changed, 19 insertions, 35 deletions
diff --git a/pkg/memutil/BUILD b/pkg/memutil/BUILD
new file mode 100644
index 000000000..71b48a972
--- /dev/null
+++ b/pkg/memutil/BUILD
@@ -0,0 +1,11 @@
+load("//tools/go_stateify:defs.bzl", "go_library")
+
+package(licenses = ["notice"])
+
+go_library(
+    name = "memutil",
+    srcs = ["memutil_unsafe.go"],
+    importpath = "gvisor.googlesource.com/gvisor/pkg/memutil",
+    visibility = ["//visibility:public"],
+    deps = ["@org_golang_x_sys//unix:go_default_library"],
+)
diff --git a/pkg/sentry/memutil/memutil_unsafe.go b/pkg/memutil/memutil_unsafe.go
index 92eab8a26..979d942a9 100644
--- a/pkg/sentry/memutil/memutil_unsafe.go
+++ b/pkg/memutil/memutil_unsafe.go
@@ -12,6 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// +build linux
+
+// Package memutil provides a wrapper for the memfd_create() system call.
 package memutil
 
 import (
diff --git a/pkg/sentry/context/contexttest/BUILD b/pkg/sentry/context/contexttest/BUILD
index ce4f1e42c..d17b1bdcf 100644
--- a/pkg/sentry/context/contexttest/BUILD
+++ b/pkg/sentry/context/contexttest/BUILD
@@ -9,11 +9,11 @@ go_library(
     importpath = "gvisor.googlesource.com/gvisor/pkg/sentry/context/contexttest",
     visibility = ["//pkg/sentry:internal"],
     deps = [
+        "//pkg/memutil",
         "//pkg/sentry/context",
         "//pkg/sentry/kernel/auth",
         "//pkg/sentry/kernel/time",
         "//pkg/sentry/limits",
-        "//pkg/sentry/memutil",
         "//pkg/sentry/pgalloc",
         "//pkg/sentry/platform",
         "//pkg/sentry/platform/ptrace",
diff --git a/pkg/sentry/context/contexttest/contexttest.go b/pkg/sentry/context/contexttest/contexttest.go
index 210a235d2..83da40711 100644
--- a/pkg/sentry/context/contexttest/contexttest.go
+++ b/pkg/sentry/context/contexttest/contexttest.go
@@ -21,11 +21,11 @@ import (
 	"testing"
 	"time"
 
+	"gvisor.googlesource.com/gvisor/pkg/memutil"
 	"gvisor.googlesource.com/gvisor/pkg/sentry/context"
 	"gvisor.googlesource.com/gvisor/pkg/sentry/kernel/auth"
 	ktime "gvisor.googlesource.com/gvisor/pkg/sentry/kernel/time"
 	"gvisor.googlesource.com/gvisor/pkg/sentry/limits"
-	"gvisor.googlesource.com/gvisor/pkg/sentry/memutil"
 	"gvisor.googlesource.com/gvisor/pkg/sentry/pgalloc"
 	"gvisor.googlesource.com/gvisor/pkg/sentry/platform"
 	"gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace"
diff --git a/pkg/sentry/memutil/BUILD b/pkg/sentry/memutil/BUILD
deleted file mode 100644
index 68b03d4cc..000000000
--- a/pkg/sentry/memutil/BUILD
+++ /dev/null
@@ -1,14 +0,0 @@
-load("//tools/go_stateify:defs.bzl", "go_library")
-
-package(licenses = ["notice"])
-
-go_library(
-    name = "memutil",
-    srcs = [
-        "memutil.go",
-        "memutil_unsafe.go",
-    ],
-    importpath = "gvisor.googlesource.com/gvisor/pkg/sentry/memutil",
-    visibility = ["//pkg/sentry:internal"],
-    deps = ["@org_golang_x_sys//unix:go_default_library"],
-)
diff --git a/pkg/sentry/memutil/memutil.go b/pkg/sentry/memutil/memutil.go
deleted file mode 100644
index a4154c42a..000000000
--- a/pkg/sentry/memutil/memutil.go
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright 2018 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// Package memutil contains the utility functions for memory operations.
-package memutil
diff --git a/pkg/sentry/pgalloc/BUILD b/pkg/sentry/pgalloc/BUILD
index bbdb1f922..ca2d5ba6f 100644
--- a/pkg/sentry/pgalloc/BUILD
+++ b/pkg/sentry/pgalloc/BUILD
@@ -63,10 +63,10 @@ go_library(
     visibility = ["//pkg/sentry:internal"],
     deps = [
         "//pkg/log",
+        "//pkg/memutil",
         "//pkg/sentry/arch",
         "//pkg/sentry/context",
         "//pkg/sentry/hostmm",
-        "//pkg/sentry/memutil",
         "//pkg/sentry/platform",
         "//pkg/sentry/safemem",
         "//pkg/sentry/usage",
diff --git a/pkg/sentry/usage/BUILD b/pkg/sentry/usage/BUILD
index 09198496b..860733061 100644
--- a/pkg/sentry/usage/BUILD
+++ b/pkg/sentry/usage/BUILD
@@ -17,6 +17,6 @@ go_library(
     ],
     deps = [
         "//pkg/bits",
-        "//pkg/sentry/memutil",
+        "//pkg/memutil",
     ],
 )
diff --git a/pkg/sentry/usage/memory.go b/pkg/sentry/usage/memory.go
index c316f1597..9ed974ccb 100644
--- a/pkg/sentry/usage/memory.go
+++ b/pkg/sentry/usage/memory.go
@@ -22,7 +22,7 @@ import (
 	"syscall"
 
 	"gvisor.googlesource.com/gvisor/pkg/bits"
-	"gvisor.googlesource.com/gvisor/pkg/sentry/memutil"
+	"gvisor.googlesource.com/gvisor/pkg/memutil"
 )
 
 // MemoryKind represents a type of memory used by the application.