Document the resize_inode filesystem option in mke2fs man page

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/misc/mke2fs.8.in b/misc/mke2fs.8.in
index 23362d6a2e1ef9459db216fa48d17edf75152a79..2221a7debc2ba3ebb3487a003095cb03959402f7 100644 (file)
--- a/misc/mke2fs.8.in
+++ b/misc/mke2fs.8.in
@@ -375,6 +375,18 @@ option).
 @JDEV@must be created with the same
 @JDEV@block size as the filesystems that will be using it.
 .TP
+.B resize_inode
+Reserve space so the block group descriptor table may grow in the future.
+Useful for online resizing using 
+.BR resize2fs .
+By default 
+.B mke2fs
+will attempt to reserve enough space so that the
+filesystem may grow to 1024 times its initial size.  This can be changed
+using
+.B resize
+extended option.
+.TP
 .B sparse_super
 Create a filesystem with fewer superblock backup copies
 (saves space on large filesystems).