max workqueue name length

[Frederic TEMPORELLI <frederic.temporelli@ext.bull.net>]

Hello,


When creating a workqueue, workqueue name is limited to 10 chars
(kernel/workqueue.c , function is __create_workqueue, test is done in a BUG_ON).

Why has this length be limited to 10 chars ?
Can I safely increase this max length (13 chars should be enough...) ?



Some comments about these questions:

In SCSI layer, HBA kernel ID is incremented after each modprobe/rmmod.

Then, when a scsi driver is managing a working queue and HBA kernel ID is 
greater than 99 (let's assume that you have modprobe/rmmod the scsi driver to 
get this ID to 99, or you may have play with 'scsi_debug' module), an oops is 
generated when loading again the driver (and the driver is frozen).

This is because working queue name format is "scsi_wq_%d" (drivers/scsi/hosts.c 
, function scsi_add_host, %d is the HBA ID), and so working queue name length is 
greater than 10 chars when HBA kernel ID is > 99...


Best regards


-- 
Frederic TEMPORELLI