Re: [PATCH RESEND v2 01/11] scsi: scsi_debug: Don't hold driver host struct pointer in host->hostdata[]

From: Douglas Gilbert
Date: Mon Mar 13 2023 - 22:41:52 EST


On 2023-03-13 05:31, John Garry wrote:
This driver stores just a pointer to the driver host structure in
host->hostdata[]. Most other drivers actually have the driver host
structure allocated in host->hostdata[], but this driver is different as
we allocate that memory separately before allocating the shost memory.

However there is no need to allocate this memory only in host->hostdata[]
when we can already look up the driver host structure from shost->dma_dev,
so add a macro for this - shost_to_sdebug_host(). Rename to_sdebug_host()
-> dev_to_sdebug_host() to avoid ambiguity.

Also remove a check for !sdbg_host in find_build_dev_info(), as this cannot
be true. Other similar checks will be later removed.

Signed-off-by: John Garry <john.g.garry@xxxxxxxxxx>
Acked-by: Douglas Gilbert <dgilbert@xxxxxxxxxxxx>

Please apply my "ack" to the rest of this series (2 through 11).

Good the have other eyes looking at this driver and making
improvements.

Thanks
Doug Gilbert