linux-kernel - Re: [PATCH] BLOCK: Make it possible to disable the block layer

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Date:	Thu, 24 Aug 2006 17:29:37 +0200
From:	Adrian Bunk <bunk@...sta.de>
To:	David Howells <dhowells@...hat.com>
Cc:	Jens Axboe <axboe@...e.de>, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] BLOCK: Make it possible to disable the block layer

On Thu, Aug 24, 2006 at 02:00:42PM +0100, David Howells wrote:
>...
> +config BLOCK
> +       bool "Enable the block layer"

	bool "Enable the block layer" depends on EMBEDDED

> +       default y
> +       help
>...
> --- a/drivers/ieee1394/Kconfig
> +++ b/drivers/ieee1394/Kconfig
> @@ -122,7 +122,7 @@ config IEEE1394_VIDEO1394
>  
>  config IEEE1394_SBP2
>  	tristate "SBP-2 support (Harddisks etc.)"
> -	depends on IEEE1394 && SCSI && (PCI || BROKEN)
> +	depends on IEEE1394 && BLOCK && SCSI && (PCI || BROKEN)
>  	help
>  	  This option enables you to use SBP-2 devices connected to your IEEE
>  	  1394 bus.  SBP-2 devices include harddrives and DVD devices.
> diff --git a/drivers/infiniband/ulp/iser/Kconfig b/drivers/infiniband/ulp/iser/Kconfig
> index fead87d..f945953 100644
> --- a/drivers/infiniband/ulp/iser/Kconfig
> +++ b/drivers/infiniband/ulp/iser/Kconfig
> @@ -1,6 +1,6 @@
>  config INFINIBAND_ISER
>  	tristate "ISCSI RDMA Protocol"
> -	depends on INFINIBAND && SCSI
> +	depends on INFINIBAND && BLOCK && SCSI
>  	select SCSI_ISCSI_ATTRS
>  	---help---
>  	  Support for the ISCSI RDMA Protocol over InfiniBand.  This
> diff --git a/drivers/infiniband/ulp/srp/Kconfig b/drivers/infiniband/ulp/srp/Kconfig
> index 8fe3be4..63d7d5a 100644
> --- a/drivers/infiniband/ulp/srp/Kconfig
> +++ b/drivers/infiniband/ulp/srp/Kconfig
> @@ -1,6 +1,6 @@
>  config INFINIBAND_SRP
>  	tristate "InfiniBand SCSI RDMA Protocol"
> -	depends on INFINIBAND && SCSI
> +	depends on INFINIBAND && BLOCK && SCSI
>  	---help---
>  	  Support for the SCSI RDMA Protocol over InfiniBand.  This
>  	  allows you to access storage devices that speak SRP over
>...
> --- a/drivers/scsi/Kconfig
> +++ b/drivers/scsi/Kconfig
>...
> @@ -43,7 +45,7 @@ comment "SCSI support type (disk, tape, 
>  
>  config BLK_DEV_SD
>  	tristate "SCSI disk support"
> -	depends on SCSI
> +	depends on SCSI && BLOCK
>  	---help---
>  	  If you want to use SCSI hard disks, Fibre Channel disks,
>  	  USB storage or the SCSI or parallel port version of
> @@ -98,7 +100,7 @@ config CHR_DEV_OSST
>  
>  config BLK_DEV_SR
>  	tristate "SCSI CDROM support"
> -	depends on SCSI
> +	depends on SCSI && BLOCK
>  	---help---
>  	  If you want to use a SCSI or FireWire CD-ROM under Linux,
>  	  say Y and read the SCSI-HOWTO and the CDROM-HOWTO at
> @@ -473,7 +475,7 @@ source "drivers/scsi/megaraid/Kconfig.me
>  
>  config SCSI_SATA
>  	tristate "Serial ATA (SATA) support"
> -	depends on SCSI
> +	depends on SCSI && BLOCK
>  	help
>  	  This driver family supports Serial ATA host controllers
>  	  and devices.
>...

Unless the dependency of SCSI on BLOCK you introduce should go away
these are not required.

cu
Adrian

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