Add missing features to ext4 man page

Add descriptions for the ea_inode and large_dir features.

Signed-off-by: Tyson Nottingham <tgnottingham@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/misc/ext4.5.in b/misc/ext4.5.in
index 45aceb2..a964120 100644 (file)
--- a/misc/ext4.5.in
+++ b/misc/ext4.5.in
@@ -78,6 +78,14 @@ lifts this limit by causing ext4 to use a link count of 1 to indicate
 that the number of hard links to a directory is not known when the link
 count might exceed the maximum count limit.
 .TP
+.B ea_inode
+.br
+Normally, a file's extended attributes and associated metadata must fit within
+the inode or the inode's associated extended attribute block. This feature
+allows the value of each extended attribute to be placed in the data blocks of a
+separate inode if necessary, increasing the limit on the size and number of
+extended attributes per file.
+.TP
 .B encrypt
 .br
 This ext4 feature provides file-system level encryption of data blocks
@@ -175,6 +183,13 @@ option to
 or
 .BR tune2fs(8).
 .TP
+.B large_dir
+.br
+This feature increases the limit on the number of files per directory by
+raising the maximum size of directories and, for hashed b-tree directories (see
+.BR dir_index ),
+the maximum height of the hashed b-tree used to store the directory entries.
+.TP
 .B large_file
 .br
 This feature flag is set automatically by modern kernels when a file