feature which can be used with the -O option.
+2003-04-11 Theodore Ts'o <tytso@mit.edu>
+
+ * tune2fs.8.in, mke2fs.8.in: Document the dir_index filesystem
+ feature which can be used with the -O option.
+
2003-04-06 Theodore Ts'o <tytso@mit.edu>
* fsck.c (parse_fstab_line, interpret_type, fsck_device, ignore,
The following filesystem options are supported:
.RS 1.2i
.TP
-.B sparse_super
-Create a filesystem with fewer superblock backup copies
-(saves space on large filesystems).
+.B dir_index
+Use hashed b-trees to speed up lookups in large directories.
.TP
.B filetype
Store file type information in directory entries.
@JDEV@.I external-journal
@JDEV@must be created with the same
@JDEV@block size as the filesystems that will be using it.
+.TP
+.B sparse_super
+Create a filesystem with fewer superblock backup copies
+(saves space on large filesystems).
.RE
.TP
.B \-q
.BR tune2fs :
.RS 1.2i
.TP
-.B sparse_super
-Limit the number of backup superblocks to save space on large filesystems.
+.B dir_index
+Use hashed b-trees to speed up lookups in large directories.
.TP
.B filetype
Store file type information in directory entries.
Setting the filesystem feature is equivalent to using the
.B \-j
option.
+.TP
+.B sparse_super
+Limit the number of backup superblocks to save space on large filesystems.
.RE
.IP
After setting or clearing