mount: ext4 option inode_readahead should be inode_readahead_blks in mount.8

Mount option inode_readahead should be inode_readahead_blks. Also the
value should be a power of 2.

Signed-off-by: Eryu Guan <guaneryu@gmail.com>

diff --git a/sys-utils/mount.8 b/sys-utils/mount.8
index 0fb24483afbe092a28223b5fa44ea7d4dd4bc683..3ddd3f15539c628877d91c7b4e83a2bc3e0b98a3 100644 (file)
--- a/sys-utils/mount.8
+++ b/sys-utils/mount.8
@@ -1490,10 +1490,10 @@ with other ext4 mount options.
 
 The ext4 filesystem enables write barriers by default.
 .TP
-.BI inode_readahead= n
+.BI 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.
+The value must be a power of 2. The default value is 32 blocks.
 .TP
 .BI stripe= n
 Number of filesystem blocks that mballoc will try to use for allocation size