Re: [RFC] SCSI EH document

[Jeff Garzik <jgarzik@pobox.com>]

Tejun Heo wrote:
>> Both all the list-heads need to be cleared, otherwise there may be 
>> list corruption next time the element is added to the list_head.
>>
> 
>  scmd->eh_entry is never used as list head.  It's always used as list 
> entry.  So, technically, it needs not be cleared, I think.  No?  The 
> problem we had was w/ shost->eh_cmd_q not being cleared.

Every node is a list_head.  You want all pointers for all nodes pointing 
to something useful, even if they are not actively present on a list, so 
that they may be easily and corrected added to a list at a later time. 
Read list_del_init() for example.

	Jeff