diff --git a/Documentation/filesystems/ext4/directory.rst b/Documentation/filesystems/ext4/directory.rst
index 073940cc64edd..55f618b371445 100644
--- a/Documentation/filesystems/ext4/directory.rst
+++ b/Documentation/filesystems/ext4/directory.rst
@@ -121,6 +121,31 @@ The directory file type is one of the following values:
    * - 0x7
      - Symbolic link.
 
+To support directories that are both encrypted and casefolded directories, we
+must also include hash information in the directory entry. We append
+``ext4_extended_dir_entry_2`` to ``ext4_dir_entry_2`` except for the entries
+for dot and dotdot, which are kept the same. The structure follows immediately
+after ``name`` and is included in the size listed by ``rec_len`` If a directory
+entry uses this extension, it may be up to 271 bytes.
+
+.. list-table::
+   :widths: 8 8 24 40
+   :header-rows: 1
+
+   * - Offset
+     - Size
+     - Name
+     - Description
+   * - 0x0
+     - \_\_le32
+     - hash
+     - The hash of the directory name
+   * - 0x4
+     - \_\_le32
+     - minor\_hash
+     - The minor hash of the directory name
+
+
 In order to add checksums to these classic directory blocks, a phony
 ``struct ext4_dir_entry`` is placed at the end of each leaf block to
 hold the checksum. The directory entry is 12 bytes long. The inode
@@ -322,6 +347,8 @@ The directory hash is one of the following values:
      - Half MD4, unsigned.
    * - 0x5
      - Tea, unsigned.
+   * - 0x6
+     - Siphash.
 
 Interior nodes of an htree are recorded as ``struct dx_node``, which is
 also the full length of a data block:
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index 18b8da7ba92f6..1d72c62b7d6da 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -30,6 +30,8 @@
 #include "ext4.h"
 #include "xattr.h"
 
+#define DOTDOT_OFFSET 12
+
 static int ext4_dx_readdir(struct file *, struct dir_context *);
 
 /**
@@ -67,22 +69,26 @@ int __ext4_check_dir_entry(const char *function, unsigned int line,
 			   struct inode *dir, struct file *filp,
 			   struct ext4_dir_entry_2 *de,
 			   struct buffer_head *bh, char *buf, int size,
+			   ext4_lblk_t lblk,
 			   unsigned int offset)
 {
 	const char *error_msg = NULL;
 	const int rlen = ext4_rec_len_from_disk(de->rec_len,
 						dir->i_sb->s_blocksize);
 	const int next_offset = ((char *) de - buf) + rlen;
+	bool fake = (lblk == 0) && (offset <= DOTDOT_OFFSET);
 
-	if (unlikely(rlen < EXT4_DIR_REC_LEN(1)))
+	if (unlikely(rlen < ext4_dir_rec_len(1, fake ? NULL : dir)))
 		error_msg = "rec_len is smaller than minimal";
 	else if (unlikely(rlen % 4 != 0))
 		error_msg = "rec_len % 4 != 0";
-	else if (unlikely(rlen < EXT4_DIR_REC_LEN(de->name_len)))
+	else if (unlikely(rlen < ext4_dir_rec_len(de->name_len,
+							fake ? NULL : dir)))
 		error_msg = "rec_len is too small for name_len";
 	else if (unlikely(next_offset > size))
 		error_msg = "directory entry overrun";
-	else if (unlikely(next_offset > size - EXT4_DIR_REC_LEN(1) &&
+	else if (unlikely(next_offset > size - ext4_dir_rec_len(1,
+							fake ? NULL : dir) &&
 			  next_offset != size))
 		error_msg = "directory entry too close to block end";
 	else if (unlikely(le32_to_cpu(de->inode) >
@@ -94,15 +100,15 @@ int __ext4_check_dir_entry(const char *function, unsigned int line,
 	if (filp)
 		ext4_error_file(filp, function, line, bh->b_blocknr,
 				"bad entry in directory: %s - offset=%u, "
-				"inode=%u, rec_len=%d, name_len=%d, size=%d",
+				"inode=%u, rec_len=%d, lblk=%d, size=%d",
 				error_msg, offset, le32_to_cpu(de->inode),
-				rlen, de->name_len, size);
+				rlen, lblk, size);
 	else
 		ext4_error_inode(dir, function, line, bh->b_blocknr,
 				"bad entry in directory: %s - offset=%u, "
-				"inode=%u, rec_len=%d, name_len=%d, size=%d",
+				"inode=%u, rec_len=%d, lblk=%d, size=%d",
 				 error_msg, offset, le32_to_cpu(de->inode),
-				 rlen, de->name_len, size);
+				 rlen, lblk, size);
 
 	return 1;
 }
@@ -224,7 +230,8 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx)
 				 * failure will be detected in the
 				 * dirent test below. */
 				if (ext4_rec_len_from_disk(de->rec_len,
-					sb->s_blocksize) < EXT4_DIR_REC_LEN(1))
+					sb->s_blocksize) < ext4_dir_rec_len(1,
+									inode))
 					break;
 				i += ext4_rec_len_from_disk(de->rec_len,
 							    sb->s_blocksize);
@@ -240,7 +247,7 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx)
 			de = (struct ext4_dir_entry_2 *) (bh->b_data + offset);
 			if (ext4_check_dir_entry(inode, file, de, bh,
 						 bh->b_data, bh->b_size,
-						 offset)) {
+						 map.m_lblk, offset)) {
 				/*
 				 * On error, skip to the next block
 				 */
@@ -641,7 +648,7 @@ int ext4_check_all_de(struct inode *dir, struct buffer_head *bh, void *buf,
 	top = buf + buf_size;
 	while ((char *) de < top) {
 		if (ext4_check_dir_entry(dir, NULL, de, bh,
-					 buf, buf_size, offset))
+					 buf, buf_size, 0, offset))
 			return -EFSCORRUPTED;
 		rlen = ext4_rec_len_from_disk(de->rec_len, buf_size);
 		de = (struct ext4_dir_entry_2 *)((char *)de + rlen);
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 237885dd1cf96..9ee9cdd686ce0 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2009,6 +2009,19 @@ struct ext4_dir_entry {
 	char	name[EXT4_NAME_LEN];	/* File name */
 };
 
+
+/*
+ * Extended entry for ext4_dir_entry_2, since we can't easily store values after
+ * an arbitrary sized field, and would prefer not to break the format. For
+ * entries that are both encrypted and casefolded, we need to include the hash
+ * in the entry.
+ */
+
+struct ext4_extended_dir_entry_2 {
+	__le32 hash;
+	__le32 minor_hash;
+};
+
 /*
  * The new version of the directory entry.  Since EXT4 structures are
  * stored in intel byte order, and the name_len field could never be
@@ -2021,8 +2034,24 @@ struct ext4_dir_entry_2 {
 	__u8	name_len;		/* Name length */
 	__u8	file_type;
 	char	name[EXT4_NAME_LEN];	/* File name */
+	char	padding[sizeof(struct ext4_extended_dir_entry_2)];
 };
 
+/*
+ * Access the extended section of ext4_dir_entry_2
+ */
+#define EXT4_EXTENDED_DIRENT(entry) \
+	((struct ext4_extended_dir_entry_2 *) \
+		(((void *)(entry)) + 8 + (entry)->name_len))
+#define EXT4_DIRENT_HASH(entry) le32_to_cpu(EXT4_EXTENDED_DIRENT(de)->hash)
+#define EXT4_DIRENT_MINOR_HASH(entry) \
+		le32_to_cpu(EXT4_EXTENDED_DIRENT(de)->minor_hash)
+
+static inline bool ext4_hash_in_dirent(const struct inode *inode)
+{
+	return IS_CASEFOLDED(inode) && IS_ENCRYPTED(inode);
+}
+
 /*
  * This is a bogus directory entry at the end of each leaf block that
  * records checksums.
@@ -2064,10 +2093,25 @@ struct ext4_dir_entry_tail {
  */
 #define EXT4_DIR_PAD			4
 #define EXT4_DIR_ROUND			(EXT4_DIR_PAD - 1)
-#define EXT4_DIR_REC_LEN(name_len)	(((name_len) + 8 + EXT4_DIR_ROUND) & \
-					 ~EXT4_DIR_ROUND)
 #define EXT4_MAX_REC_LEN		((1<<16)-1)
 
+/*
+ * The rec_len is dependent on the type of directory. Directories that are
+ * casefolded and encrypted need to store the hash as well, so we add room for
+ * ext4_extended_dir_entry_2. For all entries related to '.' or '..' you should
+ * pass NULL for dir, as those entries do not use the extra fields.
+ */
+
+static inline unsigned int ext4_dir_rec_len(__u8 name_len,
+						const struct inode *dir)
+{
+	int rec_len = (name_len + 8 + EXT4_DIR_ROUND);
+
+	if (dir && ext4_hash_in_dirent(dir))
+		rec_len += sizeof(struct ext4_extended_dir_entry_2);
+	return (rec_len & ~EXT4_DIR_ROUND);
+}
+
 /*
  * If we ever get support for fs block sizes > page_size, we'll need
  * to remove the #if statements in the next two functions...
@@ -2124,6 +2168,7 @@ static inline __le16 ext4_rec_len_to_disk(unsigned len, unsigned blocksize)
 #define DX_HASH_LEGACY_UNSIGNED		3
 #define DX_HASH_HALF_MD4_UNSIGNED	4
 #define DX_HASH_TEA_UNSIGNED		5
+#define DX_HASH_SIPHASH			6
 
 static inline u32 ext4_chksum(struct ext4_sb_info *sbi, u32 crc,
 			      const void *address, unsigned int length)
@@ -2178,6 +2223,7 @@ struct ext4_filename {
 };
 
 #define fname_name(p) ((p)->disk_name.name)
+#define fname_usr_name(p) ((p)->usr_fname->name)
 #define fname_len(p)  ((p)->disk_name.len)
 
 /*
@@ -2512,21 +2558,22 @@ extern int __ext4_check_dir_entry(const char *, unsigned int, struct inode *,
 				  struct file *,
 				  struct ext4_dir_entry_2 *,
 				  struct buffer_head *, char *, int,
-				  unsigned int);
-#define ext4_check_dir_entry(dir, filp, de, bh, buf, size, offset)	\
+				  ext4_lblk_t, unsigned int);
+#define ext4_check_dir_entry(dir, filp, de, bh, buf, size, lblk, offset) \
 	unlikely(__ext4_check_dir_entry(__func__, __LINE__, (dir), (filp), \
-					(de), (bh), (buf), (size), (offset)))
+				(de), (bh), (buf), (size), (lblk), (offset)))
 extern int ext4_htree_store_dirent(struct file *dir_file, __u32 hash,
 				__u32 minor_hash,
 				struct ext4_dir_entry_2 *dirent,
 				struct fscrypt_str *ent_name);
 extern void ext4_htree_free_dir_info(struct dir_private_info *p);
 extern int ext4_find_dest_de(struct inode *dir, struct inode *inode,
+			     ext4_lblk_t lblk,
 			     struct buffer_head *bh,
 			     void *buf, int buf_size,
 			     struct ext4_filename *fname,
 			     struct ext4_dir_entry_2 **dest_de);
-void ext4_insert_dentry(struct inode *inode,
+void ext4_insert_dentry(struct inode *dir, struct inode *inode,
 			struct ext4_dir_entry_2 *de,
 			int buf_size,
 			struct ext4_filename *fname);
@@ -2703,11 +2750,12 @@ extern int ext4_search_dir(struct buffer_head *bh,
 			   int buf_size,
 			   struct inode *dir,
 			   struct ext4_filename *fname,
-			   unsigned int offset,
+			   ext4_lblk_t lblk, unsigned int offset,
 			   struct ext4_dir_entry_2 **res_dir);
 extern int ext4_generic_delete_entry(handle_t *handle,
 				     struct inode *dir,
 				     struct ext4_dir_entry_2 *de_del,
+				     ext4_lblk_t lblk,
 				     struct buffer_head *bh,
 				     void *entry_buf,
 				     int buf_size,
@@ -3242,7 +3290,7 @@ extern int ext4_handle_dirty_dirblock(handle_t *handle, struct inode *inode,
 				      struct buffer_head *bh);
 extern int ext4_ci_compare(const struct inode *parent,
 			   const struct qstr *fname,
-			   const struct qstr *entry, bool quick);
+			   unsigned char *name2, size_t len, bool quick);
 
 #define S_SHIFT 12
 static const unsigned char ext4_type_by_mode[(S_IFMT >> S_SHIFT) + 1] = {
diff --git a/fs/ext4/hash.c b/fs/ext4/hash.c
index 143b0073b3f46..035b57b936732 100644
--- a/fs/ext4/hash.c
+++ b/fs/ext4/hash.c
@@ -197,7 +197,7 @@ static void str2hashbuf_unsigned(const char *msg, int len, __u32 *buf, int num)
  * represented, and whether or not the returned hash is 32 bits or 64
  * bits.  32 bit hashes will return 0 for the minor hash.
  */
-static int __ext4fs_dirhash(const char *name, int len,
+static int __ext4fs_dirhash(const struct inode *dir, const char *name, int len,
 			    struct dx_hash_info *hinfo)
 {
 	__u32	hash;
@@ -259,6 +259,22 @@ static int __ext4fs_dirhash(const char *name, int len,
 		hash = buf[0];
 		minor_hash = buf[1];
 		break;
+	case DX_HASH_SIPHASH:
+	{
+		struct qstr qname = QSTR_INIT(name, len);
+		__u64	combined_hash;
+
+		if (fscrypt_has_encryption_key(dir)) {
+			combined_hash = fscrypt_fname_siphash(dir, &qname);
+		} else {
+			ext4_warning_inode(dir, "Siphash requires key");
+			return -1;
+		}
+
+		hash = (__u32)(combined_hash >> 32);
+		minor_hash = (__u32)combined_hash;
+		break;
+	}
 	default:
 		hinfo->hash = 0;
 		return -1;
@@ -280,7 +296,7 @@ int ext4fs_dirhash(const struct inode *dir, const char *name, int len,
 	unsigned char *buff;
 	struct qstr qstr = {.name = name, .len = len };
 
-	if (len && IS_CASEFOLDED(dir) && um) {
+	if (len && needs_casefold(dir) && um) {
 		buff = kzalloc(sizeof(char) * PATH_MAX, GFP_KERNEL);
 		if (!buff)
 			return -ENOMEM;
@@ -291,12 +307,12 @@ int ext4fs_dirhash(const struct inode *dir, const char *name, int len,
 			goto opaque_seq;
 		}
 
-		r = __ext4fs_dirhash(buff, dlen, hinfo);
+		r = __ext4fs_dirhash(dir, buff, dlen, hinfo);
 
 		kfree(buff);
 		return r;
 	}
 opaque_seq:
 #endif
-	return __ext4fs_dirhash(name, len, hinfo);
+	return __ext4fs_dirhash(dir, name, len, hinfo);
 }
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index c66e8f9451a26..582fdf60b467c 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -451,7 +451,10 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent,
 		int ret = -1;
 
 		if (qstr) {
-			hinfo.hash_version = DX_HASH_HALF_MD4;
+			if (ext4_hash_in_dirent(parent))
+				hinfo.hash_version = DX_HASH_SIPHASH;
+			else
+				hinfo.hash_version = DX_HASH_HALF_MD4;
 			hinfo.seed = sbi->s_hash_seed;
 			ext4fs_dirhash(parent, qstr->name, qstr->len, &hinfo);
 			grp = hinfo.hash;
diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c
index fad82d08fca50..4cb1a0f580c43 100644
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -997,7 +997,7 @@ void ext4_show_inline_dir(struct inode *dir, struct buffer_head *bh,
 			     offset, de_len, de->name_len, de->name,
 			     de->name_len, le32_to_cpu(de->inode));
 		if (ext4_check_dir_entry(dir, NULL, de, bh,
-					 inline_start, inline_size, offset))
+					 inline_start, inline_size, 0, offset))
 			BUG();
 
 		offset += de_len;
@@ -1023,7 +1023,7 @@ static int ext4_add_dirent_to_inline(handle_t *handle,
 	int		err;
 	struct ext4_dir_entry_2 *de;
 
-	err = ext4_find_dest_de(dir, inode, iloc->bh, inline_start,
+	err = ext4_find_dest_de(dir, inode, 0, iloc->bh, inline_start,
 				inline_size, fname, &de);
 	if (err)
 		return err;
@@ -1032,7 +1032,7 @@ static int ext4_add_dirent_to_inline(handle_t *handle,
 	err = ext4_journal_get_write_access(handle, iloc->bh);
 	if (err)
 		return err;
-	ext4_insert_dentry(inode, de, inline_size, fname);
+	ext4_insert_dentry(dir, inode, de, inline_size, fname);
 
 	ext4_show_inline_dir(dir, iloc->bh, inline_start, inline_size);
 
@@ -1101,7 +1101,7 @@ static int ext4_update_inline_dir(handle_t *handle, struct inode *dir,
 	int old_size = EXT4_I(dir)->i_inline_size - EXT4_MIN_INLINE_DATA_SIZE;
 	int new_size = get_max_inline_xattr_value_size(dir, iloc);
 
-	if (new_size - old_size <= EXT4_DIR_REC_LEN(1))
+	if (new_size - old_size <= ext4_dir_rec_len(1, NULL))
 		return -ENOSPC;
 
 	ret = ext4_update_inline_data(handle, dir,
@@ -1379,8 +1379,8 @@ int ext4_inlinedir_to_tree(struct file *dir_file,
 			fake.name_len = 1;
 			strcpy(fake.name, ".");
 			fake.rec_len = ext4_rec_len_to_disk(
-						EXT4_DIR_REC_LEN(fake.name_len),
-						inline_size);
+					  ext4_dir_rec_len(fake.name_len, NULL),
+					  inline_size);
 			ext4_set_de_type(inode->i_sb, &fake, S_IFDIR);
 			de = &fake;
 			pos = EXT4_INLINE_DOTDOT_OFFSET;
@@ -1389,8 +1389,8 @@ int ext4_inlinedir_to_tree(struct file *dir_file,
 			fake.name_len = 2;
 			strcpy(fake.name, "..");
 			fake.rec_len = ext4_rec_len_to_disk(
-						EXT4_DIR_REC_LEN(fake.name_len),
-						inline_size);
+					  ext4_dir_rec_len(fake.name_len, NULL),
+					  inline_size);
 			ext4_set_de_type(inode->i_sb, &fake, S_IFDIR);
 			de = &fake;
 			pos = EXT4_INLINE_DOTDOT_SIZE;
@@ -1399,13 +1399,18 @@ int ext4_inlinedir_to_tree(struct file *dir_file,
 			pos += ext4_rec_len_from_disk(de->rec_len, inline_size);
 			if (ext4_check_dir_entry(inode, dir_file, de,
 					 iloc.bh, dir_buf,
-					 inline_size, pos)) {
+					 inline_size, block, pos)) {
 				ret = count;
 				goto out;
 			}
 		}
 
-		ext4fs_dirhash(dir, de->name, de->name_len, hinfo);
+		if (ext4_hash_in_dirent(dir)) {
+			hinfo->hash = EXT4_DIRENT_HASH(de);
+			hinfo->minor_hash = EXT4_DIRENT_MINOR_HASH(de);
+		} else {
+			ext4fs_dirhash(dir, de->name, de->name_len, hinfo);
+		}
 		if ((hinfo->hash < start_hash) ||
 		    ((hinfo->hash == start_hash) &&
 		     (hinfo->minor_hash < start_minor_hash)))
@@ -1487,8 +1492,8 @@ int ext4_read_inline_dir(struct file *file,
 	 * So we will use extra_offset and extra_size to indicate them
 	 * during the inline dir iteration.
 	 */
-	dotdot_offset = EXT4_DIR_REC_LEN(1);
-	dotdot_size = dotdot_offset + EXT4_DIR_REC_LEN(2);
+	dotdot_offset = ext4_dir_rec_len(1, NULL);
+	dotdot_size = dotdot_offset + ext4_dir_rec_len(2, NULL);
 	extra_offset = dotdot_size - EXT4_INLINE_DOTDOT_SIZE;
 	extra_size = extra_offset + inline_size;
 
@@ -1523,7 +1528,7 @@ int ext4_read_inline_dir(struct file *file,
 			 * failure will be detected in the
 			 * dirent test below. */
 			if (ext4_rec_len_from_disk(de->rec_len, extra_size)
-				< EXT4_DIR_REC_LEN(1))
+				< ext4_dir_rec_len(1, NULL))
 				break;
 			i += ext4_rec_len_from_disk(de->rec_len,
 						    extra_size);
@@ -1551,7 +1556,7 @@ int ext4_read_inline_dir(struct file *file,
 		de = (struct ext4_dir_entry_2 *)
 			(dir_buf + ctx->pos - extra_offset);
 		if (ext4_check_dir_entry(inode, file, de, iloc.bh, dir_buf,
-					 extra_size, ctx->pos))
+					 extra_size, 0, ctx->pos))
 			goto out;
 		if (le32_to_cpu(de->inode)) {
 			if (!dir_emit(ctx, de->name, de->name_len,
@@ -1643,7 +1648,7 @@ struct buffer_head *ext4_find_inline_entry(struct inode *dir,
 						EXT4_INLINE_DOTDOT_SIZE;
 	inline_size = EXT4_MIN_INLINE_DATA_SIZE - EXT4_INLINE_DOTDOT_SIZE;
 	ret = ext4_search_dir(iloc.bh, inline_start, inline_size,
-			      dir, fname, 0, res_dir);
+			      dir, fname, 0, 0, res_dir);
 	if (ret == 1)
 		goto out_find;
 	if (ret < 0)
@@ -1656,7 +1661,7 @@ struct buffer_head *ext4_find_inline_entry(struct inode *dir,
 	inline_size = ext4_get_inline_size(dir) - EXT4_MIN_INLINE_DATA_SIZE;
 
 	ret = ext4_search_dir(iloc.bh, inline_start, inline_size,
-			      dir, fname, 0, res_dir);
+			      dir, fname, 0, 0, res_dir);
 	if (ret == 1)
 		goto out_find;
 
@@ -1705,7 +1710,7 @@ int ext4_delete_inline_entry(handle_t *handle,
 	if (err)
 		goto out;
 
-	err = ext4_generic_delete_entry(handle, dir, de_del, bh,
+	err = ext4_generic_delete_entry(handle, dir, de_del, 0, bh,
 					inline_start, inline_size, 0);
 	if (err)
 		goto out;
@@ -1790,7 +1795,7 @@ bool empty_inline_dir(struct inode *dir, int *has_inline_data)
 					   &inline_pos, &inline_size);
 		if (ext4_check_dir_entry(dir, NULL, de,
 					 iloc.bh, inline_pos,
-					 inline_size, offset)) {
+					 inline_size, 0, offset)) {
 			ext4_warning(dir->i_sb,
 				     "bad inline directory (dir #%lu) - "
 				     "inode %u, rec_len %u, name_len %d"
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index e4715c154b60f..ae53c6f759740 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -284,9 +284,11 @@ static int dx_make_map(struct inode *dir, struct ext4_dir_entry_2 *de,
 		       unsigned blocksize, struct dx_hash_info *hinfo,
 		       struct dx_map_entry map[]);
 static void dx_sort_map(struct dx_map_entry *map, unsigned count);
-static struct ext4_dir_entry_2 *dx_move_dirents(char *from, char *to,
-		struct dx_map_entry *offsets, int count, unsigned blocksize);
-static struct ext4_dir_entry_2* dx_pack_dirents(char *base, unsigned blocksize);
+static struct ext4_dir_entry_2 *dx_move_dirents(struct inode *dir, char *from,
+					char *to, struct dx_map_entry *offsets,
+					int count, unsigned int blocksize);
+static struct ext4_dir_entry_2 *dx_pack_dirents(struct inode *dir, char *base,
+						unsigned int blocksize);
 static void dx_insert_block(struct dx_frame *frame,
 					u32 hash, ext4_lblk_t block);
 static int ext4_htree_next_block(struct inode *dir, __u32 hash,
@@ -295,7 +297,7 @@ static int ext4_htree_next_block(struct inode *dir, __u32 hash,
 				 __u32 *start_hash);
 static struct buffer_head * ext4_dx_find_entry(struct inode *dir,
 		struct ext4_filename *fname,
-		struct ext4_dir_entry_2 **res_dir);
+		struct ext4_dir_entry_2 **res_dir, ext4_lblk_t *lblk);
 static int ext4_dx_add_entry(handle_t *handle, struct ext4_filename *fname,
 			     struct inode *dir, struct inode *inode);
 
@@ -578,8 +580,9 @@ static inline void dx_set_limit(struct dx_entry *entries, unsigned value)
 
 static inline unsigned dx_root_limit(struct inode *dir, unsigned infosize)
 {
-	unsigned entry_space = dir->i_sb->s_blocksize - EXT4_DIR_REC_LEN(1) -
-		EXT4_DIR_REC_LEN(2) - infosize;
+	unsigned int entry_space = dir->i_sb->s_blocksize -
+			ext4_dir_rec_len(1, NULL) -
+			ext4_dir_rec_len(2, NULL) - infosize;
 
 	if (ext4_has_metadata_csum(dir->i_sb))
 		entry_space -= sizeof(struct dx_tail);
@@ -588,7 +591,8 @@ static inline unsigned dx_root_limit(struct inode *dir, unsigned infosize)
 
 static inline unsigned dx_node_limit(struct inode *dir)
 {
-	unsigned entry_space = dir->i_sb->s_blocksize - EXT4_DIR_REC_LEN(0);
+	unsigned int entry_space = dir->i_sb->s_blocksize -
+			ext4_dir_rec_len(0, dir);
 
 	if (ext4_has_metadata_csum(dir->i_sb))
 		entry_space -= sizeof(struct dx_tail);
@@ -684,7 +688,10 @@ static struct stats dx_show_leaf(struct inode *dir,
 						name = fname_crypto_str.name;
 						len = fname_crypto_str.len;
 					}
-					ext4fs_dirhash(dir, de->name,
+					if (IS_CASEFOLDED(dir))
+						h.hash = EXT4_DIRENT_HASH(de);
+					else
+						ext4fs_dirhash(dir, de->name,
 						       de->name_len, &h);
 					printk("%*.s:(E)%x.%u ", len, name,
 					       h.hash, (unsigned) ((char *) de
@@ -700,7 +707,7 @@ static struct stats dx_show_leaf(struct inode *dir,
 				       (unsigned) ((char *) de - base));
 #endif
 			}
-			space += EXT4_DIR_REC_LEN(de->name_len);
+			space += ext4_dir_rec_len(de->name_len, dir);
 			names++;
 		}
 		de = ext4_next_entry(de, size);
@@ -772,7 +779,8 @@ dx_probe(struct ext4_filename *fname, struct inode *dir,
 	root = (struct dx_root *) frame->bh->b_data;
 	if (root->info.hash_version != DX_HASH_TEA &&
 	    root->info.hash_version != DX_HASH_HALF_MD4 &&
-	    root->info.hash_version != DX_HASH_LEGACY) {
+	    root->info.hash_version != DX_HASH_LEGACY &&
+	    root->info.hash_version != DX_HASH_SIPHASH) {
 		ext4_warning_inode(dir, "Unrecognised inode hash code %u",
 				   root->info.hash_version);
 		goto fail;
@@ -1008,7 +1016,7 @@ static int htree_dirblock_to_tree(struct file *dir_file,
 	de = (struct ext4_dir_entry_2 *) bh->b_data;
 	top = (struct ext4_dir_entry_2 *) ((char *) de +
 					   dir->i_sb->s_blocksize -
-					   EXT4_DIR_REC_LEN(0));
+					   ext4_dir_rec_len(0, dir));
 	/* Check if the directory is encrypted */
 	if (IS_ENCRYPTED(dir)) {
 		err = fscrypt_get_encryption_info(dir);
@@ -1026,13 +1034,18 @@ static int htree_dirblock_to_tree(struct file *dir_file,
 
 	for (; de < top; de = ext4_next_entry(de, dir->i_sb->s_blocksize)) {
 		if (ext4_check_dir_entry(dir, NULL, de, bh,
-				bh->b_data, bh->b_size,
+				bh->b_data, bh->b_size, block,
 				(block<<EXT4_BLOCK_SIZE_BITS(dir->i_sb))
 					 + ((char *)de - bh->b_data))) {
 			/* silently ignore the rest of the block */
 			break;
 		}
-		ext4fs_dirhash(dir, de->name, de->name_len, hinfo);
+		if (ext4_hash_in_dirent(dir)) {
+			hinfo->hash = EXT4_DIRENT_HASH(de);
+			hinfo->minor_hash = EXT4_DIRENT_MINOR_HASH(de);
+		} else {
+			ext4fs_dirhash(dir, de->name, de->name_len, hinfo);
+		}
 		if ((hinfo->hash < start_hash) ||
 		    ((hinfo->hash == start_hash) &&
 		     (hinfo->minor_hash < start_minor_hash)))
@@ -1101,7 +1114,11 @@ int ext4_htree_fill_tree(struct file *dir_file, __u32 start_hash,
 		       start_hash, start_minor_hash));
 	dir = file_inode(dir_file);
 	if (!(ext4_test_inode_flag(dir, EXT4_INODE_INDEX))) {
-		hinfo.hash_version = EXT4_SB(dir->i_sb)->s_def_hash_version;
+		if (ext4_hash_in_dirent(dir))
+			hinfo.hash_version = DX_HASH_SIPHASH;
+		else
+			hinfo.hash_version =
+					EXT4_SB(dir->i_sb)->s_def_hash_version;
 		if (hinfo.hash_version <= DX_HASH_TEA)
 			hinfo.hash_version +=
 				EXT4_SB(dir->i_sb)->s_hash_unsigned;
@@ -1194,11 +1211,12 @@ int ext4_htree_fill_tree(struct file *dir_file, __u32 start_hash,
 static inline int search_dirblock(struct buffer_head *bh,
 				  struct inode *dir,
 				  struct ext4_filename *fname,
+				  ext4_lblk_t lblk,
 				  unsigned int offset,
 				  struct ext4_dir_entry_2 **res_dir)
 {
 	return ext4_search_dir(bh, bh->b_data, dir->i_sb->s_blocksize, dir,
-			       fname, offset, res_dir);
+			       fname, lblk, offset, res_dir);
 }
 
 /*
@@ -1219,7 +1237,10 @@ static int dx_make_map(struct inode *dir, struct ext4_dir_entry_2 *de,
 
 	while ((char *) de < base + blocksize) {
 		if (de->name_len && de->inode) {
-			ext4fs_dirhash(dir, de->name, de->name_len, &h);
+			if (ext4_hash_in_dirent(dir))
+				h.hash = EXT4_DIRENT_HASH(de);
+			else
+				ext4fs_dirhash(dir, de->name, de->name_len, &h);
 			map_tail--;
 			map_tail->hash = h.hash;
 			map_tail->offs = ((char *) de - base)>>2;
@@ -1284,30 +1305,54 @@ static void dx_insert_block(struct dx_frame *frame, u32 hash, ext4_lblk_t block)
  * doesn't match or less than zero on error.
  */
 int ext4_ci_compare(const struct inode *parent, const struct qstr *name,
-		    const struct qstr *entry, bool quick)
+		unsigned char *name2, size_t len, bool quick)
 {
 	const struct super_block *sb = parent->i_sb;
 	const struct unicode_map *um = sb->s_encoding;
+	const struct fscrypt_str crypt_entry = FSTR_INIT(name2, len);
+	struct fscrypt_str decrypted_entry;
+	struct qstr entry = QSTR_INIT(name2, len);
 	int ret;
 
+	decrypted_entry.name = NULL;
+	decrypted_entry.len = 0;
+	if (IS_ENCRYPTED(parent) && fscrypt_has_encryption_key(parent)) {
+		decrypted_entry.name = kmalloc(len, GFP_ATOMIC);
+		decrypted_entry.len = len;
+		if (!decrypted_entry.name)
+			return -ENOMEM;
+		ret = fscrypt_fname_disk_to_usr(parent, 0, 0, &crypt_entry,
+							&decrypted_entry);
+		if (ret < 0)
+			goto err;
+	}
+
+	{
+	struct qstr decrypted = FSTR_TO_QSTR(&decrypted_entry);
 	if (quick)
-		ret = utf8_strncasecmp_folded(um, name, entry);
+		ret = utf8_strncasecmp_folded(um, name,
+				decrypted_entry.name ? &decrypted : &entry);
 	else
-		ret = utf8_strncasecmp(um, name, entry);
+		ret = utf8_strncasecmp(um, name,
+				decrypted_entry.name ? &decrypted : &entry);
+	}
 
 	if (ret < 0) {
 		/* Handle invalid character sequence as either an error
 		 * or as an opaque byte sequence.
 		 */
-		if (sb_has_enc_strict_mode(sb))
-			return -EINVAL;
-
-		if (name->len != entry->len)
-			return 1;
+		if (sb_has_enc_strict_mode(sb)) {
+			ret = -EINVAL;
+			goto err;
+		}
 
-		return !!memcmp(name->name, entry->name, name->len);
+		if (name->len != entry.len)
+			ret = 1;
+		else
+			ret = !!memcmp(name->name, entry.name, name->len);
 	}
-
+err:
+	kfree(decrypted_entry.name);
 	return ret;
 }
 
@@ -1343,14 +1388,11 @@ void ext4_fname_setup_ci_filename(struct inode *dir, const struct qstr *iname,
  *
  * Return: %true if the directory entry matches, otherwise %false.
  */
-static inline bool ext4_match(const struct inode *parent,
+static bool ext4_match(struct inode *parent,
 			      const struct ext4_filename *fname,
-			      const struct ext4_dir_entry_2 *de)
+			      struct ext4_dir_entry_2 *de)
 {
 	struct fscrypt_name f;
-#ifdef CONFIG_UNICODE
-	const struct qstr entry = {.name = de->name, .len = de->name_len};
-#endif
 
 	if (!de->inode)
 		return false;
@@ -1366,10 +1408,23 @@ static inline bool ext4_match(const struct inode *parent,
 		if (fname->cf_name.name) {
 			struct qstr cf = {.name = fname->cf_name.name,
 					  .len = fname->cf_name.len};
-			return !ext4_ci_compare(parent, &cf, &entry, true);
+			if (IS_ENCRYPTED(parent)) {
+				struct dx_hash_info hinfo;
+
+				hinfo.hash_version = DX_HASH_SIPHASH;
+				hinfo.seed = NULL;
+				ext4fs_dirhash(parent, fname->cf_name.name,
+						fname_len(fname), &hinfo);
+				if (hinfo.hash != EXT4_DIRENT_HASH(de) ||
+						hinfo.minor_hash !=
+						    EXT4_DIRENT_MINOR_HASH(de))
+					return 0;
+			}
+			return !ext4_ci_compare(parent, &cf, de->name,
+							de->name_len, true);
 		}
-		return !ext4_ci_compare(parent, fname->usr_fname, &entry,
-					false);
+		return !ext4_ci_compare(parent, fname->usr_fname, de->name,
+						de->name_len, false);
 	}
 #endif
 
@@ -1381,7 +1436,8 @@ static inline bool ext4_match(const struct inode *parent,
  */
 int ext4_search_dir(struct buffer_head *bh, char *search_buf, int buf_size,
 		    struct inode *dir, struct ext4_filename *fname,
-		    unsigned int offset, struct ext4_dir_entry_2 **res_dir)
+		    ext4_lblk_t lblk, unsigned int offset,
+		    struct ext4_dir_entry_2 **res_dir)
 {
 	struct ext4_dir_entry_2 * de;
 	char * dlimit;
@@ -1397,7 +1453,7 @@ int ext4_search_dir(struct buffer_head *bh, char *search_buf, int buf_size,
 			/* found a match - just to be sure, do
 			 * a full check */
 			if (ext4_check_dir_entry(dir, NULL, de, bh, bh->b_data,
-						 bh->b_size, offset))
+						 bh->b_size, lblk, offset))
 				return -1;
 			*res_dir = de;
 			return 1;
@@ -1443,7 +1499,7 @@ static int is_dx_internal_node(struct inode *dir, ext4_lblk_t block,
 static struct buffer_head *__ext4_find_entry(struct inode *dir,
 					     struct ext4_filename *fname,
 					     struct ext4_dir_entry_2 **res_dir,
-					     int *inlined)
+					     int *inlined, ext4_lblk_t *lblk)
 {
 	struct super_block *sb;
 	struct buffer_head *bh_use[NAMEI_RA_SIZE];
@@ -1467,6 +1523,8 @@ static struct buffer_head *__ext4_find_entry(struct inode *dir,
 		int has_inline_data = 1;
 		ret = ext4_find_inline_entry(dir, fname, res_dir,
 					     &has_inline_data);
+		if (lblk)
+			*lblk = 0;
 		if (has_inline_data) {
 			if (inlined)
 				*inlined = 1;
@@ -1485,7 +1543,7 @@ static struct buffer_head *__ext4_find_entry(struct inode *dir,
 		goto restart;
 	}
 	if (is_dx(dir)) {
-		ret = ext4_dx_find_entry(dir, fname, res_dir);
+		ret = ext4_dx_find_entry(dir, fname, res_dir, lblk);
 		/*
 		 * On success, or if the error was file not found,
 		 * return.  Otherwise, fall back to doing a search the
@@ -1550,9 +1608,11 @@ static struct buffer_head *__ext4_find_entry(struct inode *dir,
 			goto cleanup_and_exit;
 		}
 		set_buffer_verified(bh);
-		i = search_dirblock(bh, dir, fname,
+		i = search_dirblock(bh, dir, fname, block,
 			    block << EXT4_BLOCK_SIZE_BITS(sb), res_dir);
 		if (i == 1) {
+			if (lblk)
+				*lblk = block;
 			EXT4_I(dir)->i_dir_start_lookup = block;
 			ret = bh;
 			goto cleanup_and_exit;
@@ -1587,7 +1647,7 @@ static struct buffer_head *__ext4_find_entry(struct inode *dir,
 static struct buffer_head *ext4_find_entry(struct inode *dir,
 					   const struct qstr *d_name,
 					   struct ext4_dir_entry_2 **res_dir,
-					   int *inlined)
+					   int *inlined, ext4_lblk_t *lblk)
 {
 	int err;
 	struct ext4_filename fname;
@@ -1599,7 +1659,7 @@ static struct buffer_head *ext4_find_entry(struct inode *dir,
 	if (err)
 		return ERR_PTR(err);
 
-	bh = __ext4_find_entry(dir, &fname, res_dir, inlined);
+	bh = __ext4_find_entry(dir, &fname, res_dir, inlined, lblk);
 
 	ext4_fname_free_filename(&fname);
 	return bh;
@@ -1620,7 +1680,7 @@ static struct buffer_head *ext4_lookup_entry(struct inode *dir,
 	if (err)
 		return ERR_PTR(err);
 
-	bh = __ext4_find_entry(dir, &fname, res_dir, NULL);
+	bh = __ext4_find_entry(dir, &fname, res_dir, NULL, NULL);
 
 	ext4_fname_free_filename(&fname);
 	return bh;
@@ -1628,7 +1688,7 @@ static struct buffer_head *ext4_lookup_entry(struct inode *dir,
 
 static struct buffer_head * ext4_dx_find_entry(struct inode *dir,
 			struct ext4_filename *fname,
-			struct ext4_dir_entry_2 **res_dir)
+			struct ext4_dir_entry_2 **res_dir, ext4_lblk_t *lblk)
 {
 	struct super_block * sb = dir->i_sb;
 	struct dx_frame frames[EXT4_HTREE_LEVEL], *frame;
@@ -1644,11 +1704,13 @@ static struct buffer_head * ext4_dx_find_entry(struct inode *dir,
 		return (struct buffer_head *) frame;
 	do {
 		block = dx_get_block(frame->at);
+		if (lblk)
+			*lblk = block;
 		bh = ext4_read_dirblock(dir, block, DIRENT_HTREE);
 		if (IS_ERR(bh))
 			goto errout;
 
-		retval = search_dirblock(bh, dir, fname,
+		retval = search_dirblock(bh, dir, fname, block,
 					 block << EXT4_BLOCK_SIZE_BITS(sb),
 					 res_dir);
 		if (retval == 1)
@@ -1743,7 +1805,7 @@ struct dentry *ext4_get_parent(struct dentry *child)
 	struct ext4_dir_entry_2 * de;
 	struct buffer_head *bh;
 
-	bh = ext4_find_entry(d_inode(child), &dotdot, &de, NULL);
+	bh = ext4_find_entry(d_inode(child), &dotdot, &de, NULL, NULL);
 	if (IS_ERR(bh))
 		return ERR_CAST(bh);
 	if (!bh)
@@ -1765,7 +1827,8 @@ struct dentry *ext4_get_parent(struct dentry *child)
  * Returns pointer to last entry moved.
  */
 static struct ext4_dir_entry_2 *
-dx_move_dirents(char *from, char *to, struct dx_map_entry *map, int count,
+dx_move_dirents(struct inode *dir, char *from, char *to,
+		struct dx_map_entry *map, int count,
 		unsigned blocksize)
 {
 	unsigned rec_len = 0;
@@ -1773,7 +1836,8 @@ dx_move_dirents(char *from, char *to, struct dx_map_entry *map, int count,
 	while (count--) {
 		struct ext4_dir_entry_2 *de = (struct ext4_dir_entry_2 *)
 						(from + (map->offs<<2));
-		rec_len = EXT4_DIR_REC_LEN(de->name_len);
+		rec_len = ext4_dir_rec_len(de->name_len, dir);
+
 		memcpy (to, de, rec_len);
 		((struct ext4_dir_entry_2 *) to)->rec_len =
 				ext4_rec_len_to_disk(rec_len, blocksize);
@@ -1788,7 +1852,8 @@ dx_move_dirents(char *from, char *to, struct dx_map_entry *map, int count,
  * Compact each dir entry in the range to the minimal rec_len.
  * Returns pointer to last entry in range.
  */
-static struct ext4_dir_entry_2* dx_pack_dirents(char *base, unsigned blocksize)
+static struct ext4_dir_entry_2 *dx_pack_dirents(struct inode *dir, char *base,
+							unsigned int blocksize)
 {
 	struct ext4_dir_entry_2 *next, *to, *prev, *de = (struct ext4_dir_entry_2 *) base;
 	unsigned rec_len = 0;
@@ -1797,7 +1862,7 @@ static struct ext4_dir_entry_2* dx_pack_dirents(char *base, unsigned blocksize)
 	while ((char*)de < base + blocksize) {
 		next = ext4_next_entry(de, blocksize);
 		if (de->inode && de->name_len) {
-			rec_len = EXT4_DIR_REC_LEN(de->name_len);
+			rec_len = ext4_dir_rec_len(de->name_len, dir);
 			if (de > to)
 				memmove(to, de, rec_len);
 			to->rec_len = ext4_rec_len_to_disk(rec_len, blocksize);
@@ -1815,13 +1880,12 @@ static struct ext4_dir_entry_2* dx_pack_dirents(char *base, unsigned blocksize)
  * Returns pointer to de in block into which the new entry will be inserted.
  */
 static struct ext4_dir_entry_2 *do_split(handle_t *handle, struct inode *dir,
-			struct buffer_head **bh,struct dx_frame *frame,
-			struct dx_hash_info *hinfo)
+			struct buffer_head **bh, struct dx_frame *frame,
+			struct dx_hash_info *hinfo, ext4_lblk_t *newblock)
 {
 	unsigned blocksize = dir->i_sb->s_blocksize;
 	unsigned count, continued;
 	struct buffer_head *bh2;
-	ext4_lblk_t newblock;
 	u32 hash2;
 	struct dx_map_entry *map;
 	char *data1 = (*bh)->b_data, *data2;
@@ -1833,7 +1897,7 @@ static struct ext4_dir_entry_2 *do_split(handle_t *handle, struct inode *dir,
 	if (ext4_has_metadata_csum(dir->i_sb))
 		csum_size = sizeof(struct ext4_dir_entry_tail);
 
-	bh2 = ext4_append(handle, dir, &newblock);
+	bh2 = ext4_append(handle, dir, newblock);
 	if (IS_ERR(bh2)) {
 		brelse(*bh);
 		*bh = NULL;
@@ -1877,9 +1941,9 @@ static struct ext4_dir_entry_2 *do_split(handle_t *handle, struct inode *dir,
 					hash2, split, count-split));
 
 	/* Fancy dance to stay within two buffers */
-	de2 = dx_move_dirents(data1, data2, map + split, count - split,
+	de2 = dx_move_dirents(dir, data1, data2, map + split, count - split,
 			      blocksize);
-	de = dx_pack_dirents(data1, blocksize);
+	de = dx_pack_dirents(dir, data1, blocksize);
 	de->rec_len = ext4_rec_len_to_disk(data1 + (blocksize - csum_size) -
 					   (char *) de,
 					   blocksize);
@@ -1901,7 +1965,7 @@ static struct ext4_dir_entry_2 *do_split(handle_t *handle, struct inode *dir,
 		swap(*bh, bh2);
 		de = de2;
 	}
-	dx_insert_block(frame, hash2 + continued, newblock);
+	dx_insert_block(frame, hash2 + continued, *newblock);
 	err = ext4_handle_dirty_dirblock(handle, dir, bh2);
 	if (err)
 		goto journal_error;
@@ -1921,13 +1985,14 @@ static struct ext4_dir_entry_2 *do_split(handle_t *handle, struct inode *dir,
 }
 
 int ext4_find_dest_de(struct inode *dir, struct inode *inode,
+		      ext4_lblk_t lblk,
 		      struct buffer_head *bh,
 		      void *buf, int buf_size,
 		      struct ext4_filename *fname,
 		      struct ext4_dir_entry_2 **dest_de)
 {
 	struct ext4_dir_entry_2 *de;
-	unsigned short reclen = EXT4_DIR_REC_LEN(fname_len(fname));
+	unsigned short reclen = ext4_dir_rec_len(fname_len(fname), dir);
 	int nlen, rlen;
 	unsigned int offset = 0;
 	char *top;
@@ -1936,11 +2001,11 @@ int ext4_find_dest_de(struct inode *dir, struct inode *inode,
 	top = buf + buf_size - reclen;
 	while ((char *) de <= top) {
 		if (ext4_check_dir_entry(dir, NULL, de, bh,
-					 buf, buf_size, offset))
+					 buf, buf_size, lblk, offset))
 			return -EFSCORRUPTED;
 		if (ext4_match(dir, fname, de))
 			return -EEXIST;
-		nlen = EXT4_DIR_REC_LEN(de->name_len);
+		nlen = ext4_dir_rec_len(de->name_len, dir);
 		rlen = ext4_rec_len_from_disk(de->rec_len, buf_size);
 		if ((de->inode ? rlen - nlen : rlen) >= reclen)
 			break;
@@ -1954,7 +2019,8 @@ int ext4_find_dest_de(struct inode *dir, struct inode *inode,
 	return 0;
 }
 
-void ext4_insert_dentry(struct inode *inode,
+void ext4_insert_dentry(struct inode *dir,
+			struct inode *inode,
 			struct ext4_dir_entry_2 *de,
 			int buf_size,
 			struct ext4_filename *fname)
@@ -1962,7 +2028,7 @@ void ext4_insert_dentry(struct inode *inode,
 
 	int nlen, rlen;
 
-	nlen = EXT4_DIR_REC_LEN(de->name_len);
+	nlen = ext4_dir_rec_len(de->name_len, dir);
 	rlen = ext4_rec_len_from_disk(de->rec_len, buf_size);
 	if (de->inode) {
 		struct ext4_dir_entry_2 *de1 =
@@ -1976,6 +2042,17 @@ void ext4_insert_dentry(struct inode *inode,
 	ext4_set_de_type(inode->i_sb, de, inode->i_mode);
 	de->name_len = fname_len(fname);
 	memcpy(de->name, fname_name(fname), fname_len(fname));
+	if (ext4_hash_in_dirent(dir)) {
+		struct dx_hash_info hinfo;
+
+		hinfo.hash_version = DX_HASH_SIPHASH;
+		hinfo.seed = NULL;
+		ext4fs_dirhash(dir, fname_usr_name(fname),
+				fname_len(fname), &hinfo);
+		EXT4_EXTENDED_DIRENT(de)->hash = cpu_to_le32(hinfo.hash);
+		EXT4_EXTENDED_DIRENT(de)->minor_hash =
+				cpu_to_le32(hinfo.minor_hash);
+	}
 }
 
 /*
@@ -1989,6 +2066,7 @@ void ext4_insert_dentry(struct inode *inode,
 static int add_dirent_to_buf(handle_t *handle, struct ext4_filename *fname,
 			     struct inode *dir,
 			     struct inode *inode, struct ext4_dir_entry_2 *de,
+			     ext4_lblk_t blk,
 			     struct buffer_head *bh)
 {
 	unsigned int	blocksize = dir->i_sb->s_blocksize;
@@ -1999,7 +2077,7 @@ static int add_dirent_to_buf(handle_t *handle, struct ext4_filename *fname,
 		csum_size = sizeof(struct ext4_dir_entry_tail);
 
 	if (!de) {
-		err = ext4_find_dest_de(dir, inode, bh, bh->b_data,
+		err = ext4_find_dest_de(dir, inode, blk, bh, bh->b_data,
 					blocksize - csum_size, fname, &de);
 		if (err)
 			return err;
@@ -2012,7 +2090,7 @@ static int add_dirent_to_buf(handle_t *handle, struct ext4_filename *fname,
 	}
 
 	/* By now the buffer is marked for journaling */
-	ext4_insert_dentry(inode, de, blocksize, fname);
+	ext4_insert_dentry(dir, inode, de, blocksize, fname);
 
 	/*
 	 * XXX shouldn't update any times until successful
@@ -2104,11 +2182,16 @@ static int make_indexed_dir(handle_t *handle, struct ext4_filename *fname,
 
 	/* Initialize the root; the dot dirents already exist */
 	de = (struct ext4_dir_entry_2 *) (&root->dotdot);
-	de->rec_len = ext4_rec_len_to_disk(blocksize - EXT4_DIR_REC_LEN(2),
-					   blocksize);
+	de->rec_len = ext4_rec_len_to_disk(
+			blocksize - ext4_dir_rec_len(2, NULL), blocksize);
 	memset (&root->info, 0, sizeof(root->info));
 	root->info.info_length = sizeof(root->info);
-	root->info.hash_version = EXT4_SB(dir->i_sb)->s_def_hash_version;
+	if (ext4_hash_in_dirent(dir))
+		root->info.hash_version = DX_HASH_SIPHASH;
+	else
+		root->info.hash_version =
+				EXT4_SB(dir->i_sb)->s_def_hash_version;
+
 	entries = root->entries;
 	dx_set_block(entries, 1);
 	dx_set_count(entries, 1);
@@ -2119,7 +2202,12 @@ static int make_indexed_dir(handle_t *handle, struct ext4_filename *fname,
 	if (fname->hinfo.hash_version <= DX_HASH_TEA)
 		fname->hinfo.hash_version += EXT4_SB(dir->i_sb)->s_hash_unsigned;
 	fname->hinfo.seed = EXT4_SB(dir->i_sb)->s_hash_seed;
-	ext4fs_dirhash(dir, fname_name(fname), fname_len(fname), &fname->hinfo);
+	if (ext4_hash_in_dirent(dir))
+		ext4fs_dirhash(dir, fname_usr_name(fname),
+				fname_len(fname), &fname->hinfo);
+	else
+		ext4fs_dirhash(dir, fname_name(fname),
+				fname_len(fname), &fname->hinfo);
 
 	memset(frames, 0, sizeof(frames));
 	frame = frames;
@@ -2134,13 +2222,13 @@ static int make_indexed_dir(handle_t *handle, struct ext4_filename *fname,
 	if (retval)
 		goto out_frames;	
 
-	de = do_split(handle,dir, &bh2, frame, &fname->hinfo);
+	de = do_split(handle, dir, &bh2, frame, &fname->hinfo, &block);
 	if (IS_ERR(de)) {
 		retval = PTR_ERR(de);
 		goto out_frames;
 	}
 
-	retval = add_dirent_to_buf(handle, fname, dir, inode, de, bh2);
+	retval = add_dirent_to_buf(handle, fname, dir, inode, de, block, bh2);
 out_frames:
 	/*
 	 * Even if the block split failed, we have to properly write
@@ -2228,7 +2316,7 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry,
 			goto out;
 		}
 		retval = add_dirent_to_buf(handle, &fname, dir, inode,
-					   NULL, bh);
+					   NULL, block, bh);
 		if (retval != -ENOSPC)
 			goto out;
 
@@ -2255,7 +2343,7 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry,
 	if (csum_size)
 		ext4_initialize_dirent_tail(bh, blocksize);
 
-	retval = add_dirent_to_buf(handle, &fname, dir, inode, de, bh);
+	retval = add_dirent_to_buf(handle, &fname, dir, inode, de, block, bh);
 out:
 	ext4_fname_free_filename(&fname);
 	brelse(bh);
@@ -2277,6 +2365,7 @@ static int ext4_dx_add_entry(handle_t *handle, struct ext4_filename *fname,
 	struct ext4_dir_entry_2 *de;
 	int restart;
 	int err;
+	ext4_lblk_t lblk;
 
 again:
 	restart = 0;
@@ -2285,7 +2374,8 @@ static int ext4_dx_add_entry(handle_t *handle, struct ext4_filename *fname,
 		return PTR_ERR(frame);
 	entries = frame->entries;
 	at = frame->at;
-	bh = ext4_read_dirblock(dir, dx_get_block(frame->at), DIRENT_HTREE);
+	lblk = dx_get_block(frame->at);
+	bh = ext4_read_dirblock(dir, lblk, DIRENT_HTREE);
 	if (IS_ERR(bh)) {
 		err = PTR_ERR(bh);
 		bh = NULL;
@@ -2297,7 +2387,7 @@ static int ext4_dx_add_entry(handle_t *handle, struct ext4_filename *fname,
 	if (err)
 		goto journal_error;
 
-	err = add_dirent_to_buf(handle, fname, dir, inode, NULL, bh);
+	err = add_dirent_to_buf(handle, fname, dir, inode, NULL, lblk, bh);
 	if (err != -ENOSPC)
 		goto cleanup;
 
@@ -2417,12 +2507,12 @@ static int ext4_dx_add_entry(handle_t *handle, struct ext4_filename *fname,
 			goto journal_error;
 		}
 	}
-	de = do_split(handle, dir, &bh, frame, &fname->hinfo);
+	de = do_split(handle, dir, &bh, frame, &fname->hinfo, &lblk);
 	if (IS_ERR(de)) {
 		err = PTR_ERR(de);
 		goto cleanup;
 	}
-	err = add_dirent_to_buf(handle, fname, dir, inode, de, bh);
+	err = add_dirent_to_buf(handle, fname, dir, inode, de, lblk, bh);
 	goto cleanup;
 
 journal_error:
@@ -2445,6 +2535,7 @@ static int ext4_dx_add_entry(handle_t *handle, struct ext4_filename *fname,
 int ext4_generic_delete_entry(handle_t *handle,
 			      struct inode *dir,
 			      struct ext4_dir_entry_2 *de_del,
+			      ext4_lblk_t lblk,
 			      struct buffer_head *bh,
 			      void *entry_buf,
 			      int buf_size,
@@ -2459,7 +2550,7 @@ int ext4_generic_delete_entry(handle_t *handle,
 	de = (struct ext4_dir_entry_2 *)entry_buf;
 	while (i < buf_size - csum_size) {
 		if (ext4_check_dir_entry(dir, NULL, de, bh,
-					 bh->b_data, bh->b_size, i))
+					 bh->b_data, bh->b_size, lblk, i))
 			return -EFSCORRUPTED;
 		if (de == de_del)  {
 			if (pde)
@@ -2484,6 +2575,7 @@ int ext4_generic_delete_entry(handle_t *handle,
 static int ext4_delete_entry(handle_t *handle,
 			     struct inode *dir,
 			     struct ext4_dir_entry_2 *de_del,
+			     ext4_lblk_t lblk,
 			     struct buffer_head *bh)
 {
 	int err, csum_size = 0;
@@ -2504,7 +2596,7 @@ static int ext4_delete_entry(handle_t *handle,
 	if (unlikely(err))
 		goto out;
 
-	err = ext4_generic_delete_entry(handle, dir, de_del,
+	err = ext4_generic_delete_entry(handle, dir, de_del, lblk,
 					bh, bh->b_data,
 					dir->i_sb->s_blocksize, csum_size);
 	if (err)
@@ -2698,7 +2790,7 @@ struct ext4_dir_entry_2 *ext4_init_dot_dotdot(struct inode *inode,
 {
 	de->inode = cpu_to_le32(inode->i_ino);
 	de->name_len = 1;
-	de->rec_len = ext4_rec_len_to_disk(EXT4_DIR_REC_LEN(de->name_len),
+	de->rec_len = ext4_rec_len_to_disk(ext4_dir_rec_len(de->name_len, NULL),
 					   blocksize);
 	strcpy(de->name, ".");
 	ext4_set_de_type(inode->i_sb, de, S_IFDIR);
@@ -2708,11 +2800,12 @@ struct ext4_dir_entry_2 *ext4_init_dot_dotdot(struct inode *inode,
 	de->name_len = 2;
 	if (!dotdot_real_len)
 		de->rec_len = ext4_rec_len_to_disk(blocksize -
-					(csum_size + EXT4_DIR_REC_LEN(1)),
+					(csum_size + ext4_dir_rec_len(1, NULL)),
 					blocksize);
 	else
 		de->rec_len = ext4_rec_len_to_disk(
-				EXT4_DIR_REC_LEN(de->name_len), blocksize);
+					ext4_dir_rec_len(de->name_len, NULL),
+					blocksize);
 	strcpy(de->name, "..");
 	ext4_set_de_type(inode->i_sb, de, S_IFDIR);
 
@@ -2840,7 +2933,8 @@ bool ext4_empty_dir(struct inode *inode)
 	}
 
 	sb = inode->i_sb;
-	if (inode->i_size < EXT4_DIR_REC_LEN(1) + EXT4_DIR_REC_LEN(2)) {
+	if (inode->i_size < ext4_dir_rec_len(1, NULL) +
+					ext4_dir_rec_len(2, NULL)) {
 		EXT4_ERROR_INODE(inode, "invalid size");
 		return true;
 	}
@@ -2852,7 +2946,7 @@ bool ext4_empty_dir(struct inode *inode)
 		return true;
 
 	de = (struct ext4_dir_entry_2 *) bh->b_data;
-	if (ext4_check_dir_entry(inode, NULL, de, bh, bh->b_data, bh->b_size,
+	if (ext4_check_dir_entry(inode, NULL, de, bh, bh->b_data, bh->b_size, 0,
 				 0) ||
 	    le32_to_cpu(de->inode) != inode->i_ino || strcmp(".", de->name)) {
 		ext4_warning_inode(inode, "directory missing '.'");
@@ -2861,7 +2955,7 @@ bool ext4_empty_dir(struct inode *inode)
 	}
 	offset = ext4_rec_len_from_disk(de->rec_len, sb->s_blocksize);
 	de = ext4_next_entry(de, sb->s_blocksize);
-	if (ext4_check_dir_entry(inode, NULL, de, bh, bh->b_data, bh->b_size,
+	if (ext4_check_dir_entry(inode, NULL, de, bh, bh->b_data, bh->b_size, 0,
 				 offset) ||
 	    le32_to_cpu(de->inode) == 0 || strcmp("..", de->name)) {
 		ext4_warning_inode(inode, "directory missing '..'");
@@ -2885,7 +2979,7 @@ bool ext4_empty_dir(struct inode *inode)
 		de = (struct ext4_dir_entry_2 *) (bh->b_data +
 					(offset & (sb->s_blocksize - 1)));
 		if (ext4_check_dir_entry(inode, NULL, de, bh,
-					 bh->b_data, bh->b_size, offset)) {
+					 bh->b_data, bh->b_size, 0, offset)) {
 			offset = (offset | (sb->s_blocksize - 1)) + 1;
 			continue;
 		}
@@ -3080,6 +3174,8 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry)
 	struct buffer_head *bh;
 	struct ext4_dir_entry_2 *de;
 	handle_t *handle = NULL;
+	ext4_lblk_t lblk;
+
 
 	if (unlikely(ext4_forced_shutdown(EXT4_SB(dir->i_sb))))
 		return -EIO;
@@ -3094,7 +3190,7 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry)
 		return retval;
 
 	retval = -ENOENT;
-	bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL);
+	bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL, &lblk);
 	if (IS_ERR(bh))
 		return PTR_ERR(bh);
 	if (!bh)
@@ -3121,7 +3217,7 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry)
 	if (IS_DIRSYNC(dir))
 		ext4_handle_sync(handle);
 
-	retval = ext4_delete_entry(handle, dir, de, bh);
+	retval = ext4_delete_entry(handle, dir, de, lblk, bh);
 	if (retval)
 		goto end_rmdir;
 	if (!EXT4_DIR_LINK_EMPTY(inode))
@@ -3167,6 +3263,7 @@ static int ext4_unlink(struct inode *dir, struct dentry *dentry)
 	struct buffer_head *bh;
 	struct ext4_dir_entry_2 *de;
 	handle_t *handle = NULL;
+	ext4_lblk_t lblk;
 
 	if (unlikely(ext4_forced_shutdown(EXT4_SB(dir->i_sb))))
 		return -EIO;
@@ -3182,7 +3279,7 @@ static int ext4_unlink(struct inode *dir, struct dentry *dentry)
 		return retval;
 
 	retval = -ENOENT;
-	bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL);
+	bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL, &lblk);
 	if (IS_ERR(bh))
 		return PTR_ERR(bh);
 	if (!bh)
@@ -3205,7 +3302,7 @@ static int ext4_unlink(struct inode *dir, struct dentry *dentry)
 	if (IS_DIRSYNC(dir))
 		ext4_handle_sync(handle);
 
-	retval = ext4_delete_entry(handle, dir, de, bh);
+	retval = ext4_delete_entry(handle, dir, de, lblk, bh);
 	if (retval)
 		goto end_unlink;
 	dir->i_ctime = dir->i_mtime = current_time(dir);
@@ -3466,6 +3563,7 @@ struct ext4_renament {
 	int dir_nlink_delta;
 
 	/* entry for "dentry" */
+	ext4_lblk_t lblk;
 	struct buffer_head *bh;
 	struct ext4_dir_entry_2 *de;
 	int inlined;
@@ -3553,12 +3651,13 @@ static int ext4_find_delete_entry(handle_t *handle, struct inode *dir,
 	int retval = -ENOENT;
 	struct buffer_head *bh;
 	struct ext4_dir_entry_2 *de;
+	ext4_lblk_t lblk;
 
-	bh = ext4_find_entry(dir, d_name, &de, NULL);
+	bh = ext4_find_entry(dir, d_name, &de, NULL, &lblk);
 	if (IS_ERR(bh))
 		return PTR_ERR(bh);
 	if (bh) {
-		retval = ext4_delete_entry(handle, dir, de, bh);
+		retval = ext4_delete_entry(handle, dir, de, lblk, bh);
 		brelse(bh);
 	}
 	return retval;
@@ -3582,7 +3681,8 @@ static void ext4_rename_delete(handle_t *handle, struct ext4_renament *ent,
 		retval = ext4_find_delete_entry(handle, ent->dir,
 						&ent->dentry->d_name);
 	} else {
-		retval = ext4_delete_entry(handle, ent->dir, ent->de, ent->bh);
+		retval = ext4_delete_entry(handle, ent->dir, ent->de,
+						ent->lblk, ent->bh);
 		if (retval == -ENOENT) {
 			retval = ext4_find_delete_entry(handle, ent->dir,
 							&ent->dentry->d_name);
@@ -3695,7 +3795,8 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
 			return retval;
 	}
 
-	old.bh = ext4_find_entry(old.dir, &old.dentry->d_name, &old.de, NULL);
+	old.bh = ext4_find_entry(old.dir, &old.dentry->d_name, &old.de, NULL,
+				&old.lblk);
 	if (IS_ERR(old.bh))
 		return PTR_ERR(old.bh);
 	/*
@@ -3709,7 +3810,7 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
 		goto end_rename;
 
 	new.bh = ext4_find_entry(new.dir, &new.dentry->d_name,
-				 &new.de, &new.inlined);
+				 &new.de, &new.inlined, NULL);
 	if (IS_ERR(new.bh)) {
 		retval = PTR_ERR(new.bh);
 		new.bh = NULL;
@@ -3889,7 +3990,7 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
 		return retval;
 
 	old.bh = ext4_find_entry(old.dir, &old.dentry->d_name,
-				 &old.de, &old.inlined);
+				 &old.de, &old.inlined, NULL);
 	if (IS_ERR(old.bh))
 		return PTR_ERR(old.bh);
 	/*
@@ -3903,7 +4004,7 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
 		goto end_rename;
 
 	new.bh = ext4_find_entry(new.dir, &new.dentry->d_name,
-				 &new.de, &new.inlined);
+				 &new.de, &new.inlined, NULL);
 	if (IS_ERR(new.bh)) {
 		retval = PTR_ERR(new.bh);
 		new.bh = NULL;
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 4d866c3b8bdbf..bb26644047c6d 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3901,12 +3901,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
 		struct unicode_map *encoding;
 		__u16 encoding_flags;
 
-		if (ext4_has_feature_encrypt(sb)) {
-			ext4_msg(sb, KERN_ERR,
-				 "Can't mount with encoding and encryption");
-			goto failed_mount;
-		}
-
 		if (ext4_sb_read_encoding(es, &encoding_info,
 					  &encoding_flags)) {
 			ext4_msg(sb, KERN_ERR,
