F2FS: Backport to 3.4

Based off of patches here:
nowcomputing/f2fs-backports#1

Change-Id: I2be6d8abf4e3e4c6b9e8d635700930af432fe37a
diff --git a/fs/f2fs/acl.c b/fs/f2fs/acl.c
index 683eb44..c7c3318 100644
--- a/fs/f2fs/acl.c
+++ b/fs/f2fs/acl.c
@@ -88,16 +88,8 @@
 			break;
 
 		case ACL_USER:
-			acl->a_entries[i].e_uid =
-				make_kuid(&init_user_ns,
-						le32_to_cpu(entry->e_id));
-			entry = (struct f2fs_acl_entry *)((char *)entry +
-					sizeof(struct f2fs_acl_entry));
-			break;
 		case ACL_GROUP:
-			acl->a_entries[i].e_gid =
-				make_kgid(&init_user_ns,
-						le32_to_cpu(entry->e_id));
+			acl->a_entries[i].e_id = le32_to_cpu(entry->e_id);
 			entry = (struct f2fs_acl_entry *)((char *)entry +
 					sizeof(struct f2fs_acl_entry));
 			break;
@@ -134,16 +126,8 @@
 
 		switch (acl->a_entries[i].e_tag) {
 		case ACL_USER:
-			entry->e_id = cpu_to_le32(
-					from_kuid(&init_user_ns,
-						acl->a_entries[i].e_uid));
-			entry = (struct f2fs_acl_entry *)((char *)entry +
-					sizeof(struct f2fs_acl_entry));
-			break;
 		case ACL_GROUP:
-			entry->e_id = cpu_to_le32(
-					from_kgid(&init_user_ns,
-						acl->a_entries[i].e_gid));
+			entry->e_id = cpu_to_le32(acl->a_entries[i].e_id);
 			entry = (struct f2fs_acl_entry *)((char *)entry +
 					sizeof(struct f2fs_acl_entry));
 			break;
@@ -357,7 +341,7 @@
 		return PTR_ERR(acl);
 	if (!acl)
 		return -ENODATA;
-	error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size);
+	error = posix_acl_to_xattr(acl, buffer, size);
 	posix_acl_release(acl);
 
 	return error;
@@ -379,7 +363,7 @@
 		return -EPERM;
 
 	if (value) {
-		acl = posix_acl_from_xattr(&init_user_ns, value, size);
+		acl = posix_acl_from_xattr(value, size);
 		if (IS_ERR(acl))
 			return PTR_ERR(acl);
 		if (acl) {