Re: [PATCH] introduce scsi_host_alloc

[Christoph Hellwig <hch@lst.de>]

On Fri, Jun 06, 2003 at 07:20:07PM -0400, Luben Tuikov wrote:
> Christoph Hellwig wrote:
> >
> >scsi_host_get/scsi_host_put are the refcounting primites for
> >struct Scsi_Host and there are more users then just the host drivers.
> >(and there will be more soon).  It's an idiom in linux to use get/put
> >for those and make put free it when the refcount reaches zero.
> 
> I know about the get/put idiom, refcounting, etc.
> 
> *But* your use is alloc <--> put.  This is what throws me off.

It's not.  It's alloc[, get, put, get, put], put.  alloc is
get a new dynamic allocate structure with refcount one, after
that we can get another reference with get, or a reference from hostno
with lookup and then put it again - when the refcount reches zero
it's freed.