diff --git a/e2fsprogs-1.40.4-blkid-ext4dev.patch b/e2fsprogs-1.40.4-blkid-ext4dev.patch
new file mode 100644
index 0000000..63fa6a6
--- /dev/null
+++ b/e2fsprogs-1.40.4-blkid-ext4dev.patch
@@ -0,0 +1,82 @@
+Index: e2fsprogs-1.40.4/lib/blkid/probe.c
+===================================================================
+--- e2fsprogs-1.40.4.orig/lib/blkid/probe.c
++++ e2fsprogs-1.40.4/lib/blkid/probe.c
+@@ -148,6 +148,38 @@ static void get_ext2_info(blkid_dev dev,
+ 	set_uuid(dev, es->s_uuid, 0);
+ }
+ 
++static int probe_ext4(struct blkid_probe *probe,
++		      struct blkid_magic *id __BLKID_ATTR((unused)),
++		      unsigned char *buf)
++{
++	struct ext2_super_block *es;
++	es = (struct ext2_super_block *)buf;
++
++	/* Distinguish between jbd and ext2/3/4 fs */
++	if (blkid_le32(es->s_feature_incompat) &
++	    EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)
++		return -BLKID_ERR_PARAM;
++
++	/* Distinguish between ext3/4 and ext2 */
++	if (!(blkid_le32(es->s_feature_compat) &
++	      EXT3_FEATURE_COMPAT_HAS_JOURNAL))
++		return -BLKID_ERR_PARAM;
++
++	/* Distinguish between ext4 and ext3 */
++	if (!(blkid_le32(es->s_feature_ro_compat) &
++	      EXT4_FEATURES_RO_COMPAT) &&
++	    !(blkid_le32(es->s_feature_incompat) &
++	      EXT4_FEATURES_INCOMPAT))
++		return -BLKID_ERR_PARAM;
++
++	get_ext2_info(probe->dev, buf);
++
++	if ((es->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
++	    !uuid_is_null(es->s_journal_uuid))
++		set_uuid(probe->dev, es->s_journal_uuid, "EXT_JOURNAL");
++
++	return 0;
++}
+ static int probe_ext3(struct blkid_probe *probe, 
+ 		      struct blkid_magic *id __BLKID_ATTR((unused)), 
+ 		      unsigned char *buf)
+@@ -833,6 +865,7 @@ static struct blkid_magic type_array[] =
+   { "oracleasm", 0,	32,  8, "ORCLDISK",		probe_oracleasm },
+   { "ntfs",	 0,	 3,  8, "NTFS    ",		probe_ntfs },
+   { "jbd",	 1,   0x38,  2, "\123\357",		probe_jbd },
++  { "ext4dev",	 1,   0x38,  2, "\123\357",		probe_ext4 },
+   { "ext3",	 1,   0x38,  2, "\123\357",		probe_ext3 },
+   { "ext2",	 1,   0x38,  2, "\123\357",		probe_ext2 },
+   { "reiserfs",	 8,   0x34,  8, "ReIsErFs",		probe_reiserfs },
+Index: e2fsprogs-1.40.4/lib/blkid/probe.h
+===================================================================
+--- e2fsprogs-1.40.4.orig/lib/blkid/probe.h
++++ e2fsprogs-1.40.4/lib/blkid/probe.h
+@@ -88,6 +88,26 @@ struct ext2_super_block {
+ #define EXT3_FEATURE_INCOMPAT_RECOVER		0x00000004
+ #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV	0x00000008
+ 
++#define EXT4_FEATURE_RO_COMPAT_HUGE_FILE	0x0008
++#define EXT4_FEATURE_RO_COMPAT_GDT_CSUM		0x0010
++#define EXT4_FEATURE_RO_COMPAT_DIR_NLINK	0x0020
++#define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE	0x0040
++
++#define EXT4_FEATURE_INCOMPAT_EXTENTS		0x0040 /* extents support */
++#define EXT4_FEATURE_INCOMPAT_64BIT		0x0080
++#define EXT4_FEATURE_INCOMPAT_MMP		0x0100
++#define EXT4_FEATURE_INCOMPAT_FLEX_BG		0x0200
++
++#define EXT4_FEATURES_RO_COMPAT	(EXT4_FEATURE_RO_COMPAT_HUGE_FILE| \
++				 EXT4_FEATURE_RO_COMPAT_GDT_CSUM| \
++				 EXT4_FEATURE_RO_COMPAT_DIR_NLINK| \
++				 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE)
++
++#define EXT4_FEATURES_INCOMPAT	(EXT4_FEATURE_INCOMPAT_EXTENTS| \
++				 EXT4_FEATURE_INCOMPAT_64BIT| \
++				 EXT4_FEATURE_INCOMPAT_MMP| \
++				 EXT4_FEATURE_INCOMPAT_FLEX_BG)
++
+ struct xfs_super_block {
+ 	unsigned char	xs_magic[4];
+ 	__u32		xs_blocksize;