Re: [PATCH] nfsd: fix kconfig dependency warning for NFSD_V4

From: Chuck Lever
Date: Wed Feb 24 2021 - 16:09:49 EST


Hi Julian-

> On Feb 19, 2021, at 4:56 PM, Julian Braha <julianbraha@xxxxxxxxx> wrote:
>
> When NFSD_V4 is enabled and CRYPTO is disabled,
> Kbuild gives the following warning:
>
> WARNING: unmet direct dependencies detected for CRYPTO_SHA256
> Depends on [n]: CRYPTO [=n]
> Selected by [y]:
> - NFSD_V4 [=y] && NETWORK_FILESYSTEMS [=y] && NFSD [=y] && PROC_FS [=y]
>
> WARNING: unmet direct dependencies detected for CRYPTO_MD5
> Depends on [n]: CRYPTO [=n]
> Selected by [y]:
> - NFSD_V4 [=y] && NETWORK_FILESYSTEMS [=y] && NFSD [=y] && PROC_FS [=y]
>
> This is because NFSD_V4 selects CRYPTO_MD5 and CRYPTO_SHA256,
> without depending on or selecting CRYPTO, despite those config options
> being subordinate to CRYPTO.
>
> Signed-off-by: Julian Braha <julianbraha@xxxxxxxxx>

I've included this patch in the for-rc topic branch at:

git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux.git

However, there was some harumphing over on linux-rdma about
a similar change for CRYPTO_CRC32 and the rxe driver. I'm
not quite clear about the outcome of that conversation. It
seems like we are going with either

- add "select CRYPTO"

or

- add "depends on CRYPTO"


> --- a/fs/nfsd/Kconfig 2021-02-09 22:05:29.462030761 -0500
> +++ b/fs/nfsd/Kconfig 2021-02-11 12:00:48.974076992 -0500
> @@ -73,6 +73,7 @@
> select NFSD_V3
> select FS_POSIX_ACL
> select SUNRPC_GSS
> + select CRYPTO
> select CRYPTO_MD5
> select CRYPTO_SHA256
> select GRACE_PERIOD
>
>

--
Chuck Lever