diff --git a/cmd/mount_zfs/mount_zfs.c b/cmd/mount_zfs/mount_zfs.c
index b3c3e9a14..f7e2d99a0 100644
--- a/cmd/mount_zfs/mount_zfs.c
+++ b/cmd/mount_zfs/mount_zfs.c
@@ -61,6 +61,10 @@ static const option_map_t option_map[] = {
 	{ MNTOPT_SYNC,		MS_SYNCHRONOUS,	ZS_COMMENT	},
 	{ MNTOPT_USER,		MS_USERS,	ZS_COMMENT	},
 	{ MNTOPT_USERS,		MS_USERS,	ZS_COMMENT	},
+	/* acl flags passed with util-linux-2.24 mount command */
+	{ MNTOPT_ACL,		MS_POSIXACL,	ZS_COMMENT	},
+	{ MNTOPT_NOACL,		MS_COMMENT,	ZS_COMMENT	},
+	{ MNTOPT_POSIXACL,	MS_POSIXACL,	ZS_COMMENT	},
 #ifdef MS_NOATIME
 	{ MNTOPT_NOATIME,	MS_NOATIME,	ZS_COMMENT	},
 #endif
diff --git a/lib/libspl/include/sys/mntent.h b/lib/libspl/include/sys/mntent.h
index 736c3f866..a4be01d75 100644
--- a/lib/libspl/include/sys/mntent.h
+++ b/lib/libspl/include/sys/mntent.h
@@ -93,9 +93,12 @@
 #define	MNTOPT_NOXATTR	"noxattr"	/* disable extended attributes */
 #define	MNTOPT_COMMENT	"comment"	/* comment */
 #define	MNTOPT_ZFSUTIL	"zfsutil"	/* called by zfs utility */
+#define	MNTOPT_ACL	"acl"		/* passed by util-linux-2.24 mount */
+#define	MNTOPT_NOACL	"noacl"		/* likewise */
+#define	MNTOPT_POSIXACL	"posixacl"	/* likewise */
 
-#define ZS_COMMENT	0x00000000	/* comment */
-#define ZS_ZFSUTIL	0x00000001	/* caller is zfs(8) */
-#define ZS_NOCONTEXT	0x00000002	/* do not add selinux context */
+#define	ZS_COMMENT	0x00000000	/* comment */
+#define	ZS_ZFSUTIL	0x00000001	/* caller is zfs(8) */
+#define	ZS_NOCONTEXT	0x00000002	/* do not add selinux context */
 
 #endif	/* _SYS_MNTENT_H */
diff --git a/lib/libspl/include/sys/mount.h b/lib/libspl/include/sys/mount.h
index 7b1e06bdb..0fa4f2554 100644
--- a/lib/libspl/include/sys/mount.h
+++ b/lib/libspl/include/sys/mount.h
@@ -51,6 +51,15 @@
 #define MS_DIRSYNC		S_WRITE
 #endif
 
+/*
+ * Some old glibc headers don't correctly define MS_POSIXACL and
+ * instead leave it undefined.  When using these older headers define
+ * MS_POSIXACL to the reserved value of (1<<16).
+ */
+#if !defined(MS_POSIXACL)
+#define	MS_POSIXACL		(1<<16)
+#endif
+
 #define	MS_USERS	(MS_NOEXEC|MS_NOSUID|MS_NODEV)
 #define	MS_OWNER	(MS_NOSUID|MS_NODEV)
 #define	MS_GROUP	(MS_NOSUID|MS_NODEV)