1 files changed, 14 insertions, 0 deletions

diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt
index e1def1786e5..6ab9442d7ee 100644
--- a/Documentation/filesystems/ext4.txt
+++ b/Documentation/filesystems/ext4.txt
@@ -353,6 +353,20 @@ noauto_da_alloc		replacing existing files via patterns such as
                         system crashes before the delayed allocation
                         blocks are forced to disk.
 
+noinit_itable           Do not initialize any uninitialized inode table
+                        blocks in the background.  This feature may be
+                        used by installation CD's so that the install
+                        process can complete as quickly as possible; the
+                        inode table initialization process would then be
+                        deferred until the next time the  file system
+                        is unmounted.
+
+init_itable=n           The lazy itable init code will wait n times the
+                        number of milliseconds it took to zero out the
+                        previous block group's inode table.  This
+                        minimizes the impact on the systme performance
+                        while file system's inode table is being initialized.
+
 discard         Controls whether ext4 should issue discard/TRIM
 nodiscard(*)            commands to the underlying block device when
                         blocks are freed.  This is useful for SSD devices