ext4: Update documentation to correct the inode_readahead_blks option name

Per commit 240799cd, the option name for readahead should be
inode_readahead_blks, not inode_readahead.

Signed-off-by: Fang Wenqi <antonf@turbolinux.com.cn>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt
index af6885c..e1def17 100644 (file)
--- a/Documentation/filesystems/ext4.txt
+++ b/Documentation/filesystems/ext4.txt
@@ -196,7 +196,7 @@ nobarrier           This also requires an IO stack which can support
                        also be used to enable or disable barriers, for
                        consistency with other ext4 mount options.
 
-inode_readahead=n      This tuning parameter controls the maximum
+inode_readahead_blks=n This tuning parameter controls the maximum
                        number of inode table blocks that ext4's inode
                        table readahead algorithm will pre-read into
                        the buffer cache.  The default value is 32 blocks.