linux-kernel - Re: [PATCH] bcache: add BLK_DEV dependency for BCACHE_NVM

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Message-ID: <aa96ed83-47f4-39a7-4b6e-fb17cb4e9f84@infradead.org>
Date:   Wed, 21 Apr 2021 07:17:33 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Arnd Bergmann <arnd@...nel.org>, Coly Li <colyli@...e.de>,
        Kent Overstreet <kent.overstreet@...il.com>,
        Jens Axboe <axboe@...nel.dk>,
        Jianpeng Ma <jianpeng.ma@...el.com>
Cc:     Arnd Bergmann <arnd@...db.de>, Jean Delvare <jdelvare@...e.de>,
        linux-bcache@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] bcache: add BLK_DEV dependency for BCACHE_NVM_PAGES

On 4/21/21 6:50 AM, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> Selecting this without CONFIG_BLK_DEV causes a Kconfig warning:
> 
> WARNING: unmet direct dependencies detected for LIBNVDIMM
>   Depends on [n]: PHYS_ADDR_T_64BIT [=y] && HAS_IOMEM [=y] && BLK_DEV [=n]
>   Selected by [y]:
>   - BCACHE_NVM_PAGES [=y] && MD [=y] && BCACHE [=y] && PHYS_ADDR_T_64BIT [=y]
> 
> Add it as another dependency.
> 
> Fixes: 688330711e9a ("bcache: initialize the nvm pages allocator")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  drivers/md/bcache/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/md/bcache/Kconfig b/drivers/md/bcache/Kconfig
> index 0996e366ad0b..9cb3d8c39fc1 100644
> --- a/drivers/md/bcache/Kconfig
> +++ b/drivers/md/bcache/Kconfig
> @@ -40,6 +40,7 @@ config BCACHE_NVM_PAGES
>  	bool "NVDIMM support for bcache (EXPERIMENTAL)"
>  	depends on BCACHE
>  	depends on PHYS_ADDR_T_64BIT
> +	depends on BLKDEV

	           BLK_DEV

>  	select LIBNVDIMM
>  	select DAX
>  	help
> 

tested?

-- 
~Randy