Hello,

Attached is a patch to dynamically allocate the data buffers for the
disk statistics, and to extend the gathering of disk statistics to
include major numbers greater than 15.

A disk statistics structure is allocated when a new block device 
is registered.  A global array (kstat.dkdrive_info[]) is used
to hold the address of the statistics structures for all block
devices.  The  disk statistics lookup is the same as before: indexed by
the major number and the disk number.  Note that this patch includes the
changes 
of function disk_index() in genhd.h from linux-2.4.10-ac kernel, in
order to make the disk index lookup work for more disks.

This patch is against 2.4.14 kernel and has been tested.  I greatly
appreciate any feedback from you.  Please take a look and cc you
comments to me.


Have a good day.

-- 
Mingming Cao
IBM Linux Technology Center
503-578-5024  IBM T/L: 775-5024
cmm@us.ibm.com
http://www.ibm.com/linux/ltc