Applied Andrew Morton's patch to support the dirsync option.
diff --git a/misc/chattr.1.in b/misc/chattr.1.in
index 82f054b..be64575 100644
--- a/misc/chattr.1.in
+++ b/misc/chattr.1.in
@@ -19,16 +19,16 @@
.B chattr
changes the file attributes on a Linux second extended file system.
.PP
-The format of a symbolic mode is +-=[ASacdistu].
+The format of a symbolic mode is +-=[ASacDdistu].
.PP
The operator `+' causes the selected attributes to be added to the
existing attributes of the files; `-' causes them to be removed; and
`=' causes them to be the only attributes that the files have.
.PP
-The letters `ASacdijsu' select the new attributes for the files:
-don't update atime (A), synchronous updates (S), append only (a),
-compressed (c), no dump (d), immutable (i), data journalling (j),
-secure deletion (s), and undeletable (u).
+The letters `ASacDdijsu' select the new attributes for the files:
+don't update atime (A), synchronous updates (S), synchronous directory
+updates (D), append only (a), compressed (c), no dump (d), immutable (i),
+data journalling (j), secure deletion (s), and undeletable (u).
.SH OPTIONS
.TP
.B \-R
@@ -74,6 +74,10 @@
the changes are written synchronously on the disk; this is equivalent to
the `sync' mount option applied to a subset of the files.
.PP
+When a directory with the `D' attribute set is modified,
+the changes are written synchronously on the disk; this is equivalent to
+the `dirsync' mount option applied to a subset of the files.
+.PP
A file with the 't' attribute will not have a partial block fragment at
the of the file merged with other files (for those filesystems which
support tail-merging). This is necessary for applications such as LILO
@@ -92,6 +96,8 @@
in a future ext2 fs version.
.PP
The `j' option is only useful if the filesystem is mounted as ext3.
+.PP
+The `D' option is only useful on Linux kernel 2.5.19 and later.
.SH AVAILABILITY
.B chattr
is part of the e2fsprogs package and is available from