From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@infradead.org>
Date: Thu, 11 Aug 2016 10:17:12 -0700
Subject: [Cluster-devel] [GFS2 PATCH] GFS2: Add function gfs2_get_iomap
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>  config FS_IOMAP
> -	bool
> +	bool "File System IOMAP Support"

This shouldn't be a user visible option...

> diff --git a/fs/gfs2/Kconfig b/fs/gfs2/Kconfig
> index 90c6a8f..f8fa955 100644
> --- a/fs/gfs2/Kconfig
> +++ b/fs/gfs2/Kconfig
> @@ -25,6 +25,7 @@ config GFS2_FS
>  config GFS2_FS_LOCKING_DLM
>  	bool "GFS2 DLM locking"
>  	depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && \
> +		FS_IOMAP && \
>  		CONFIGFS_FS && SYSFS && (DLM=y || DLM=GFS2_FS)

... just use select here