Re: [PATCH] pnfs/blocklayout: require 64-bit ѕector_t

[Christoph Hellwig <hch@lst.de>]

Trond, Anna,

can you pick this up?  Maybe even for 3.13 given that it should
be pretty harmless for 98% of the configfs, and will prevent problems
for the others.

On Sat, Aug 05, 2017 at 10:59:14AM +0200, Christoph Hellwig wrote:
> The blocklayout code does not compile cleanly for a 32-bit sector_t,
> and also has no reliable checks for devices sizes, which makes it
> unsafe to use with a kernel that doesn't support large block devices.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Reported-by: Arnd Bergmann <arnd@arndb.de>
> Fixes: 5c83746a0cf2 ("pnfs/blocklayout: in-kernel GETDEVICEINFO XDR parsing")
> ---
>  fs/nfs/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig
> index 69d02cf8cf37..5f93cfacb3d1 100644
> --- a/fs/nfs/Kconfig
> +++ b/fs/nfs/Kconfig
> @@ -121,6 +121,7 @@ config PNFS_FILE_LAYOUT
>  config PNFS_BLOCK
>  	tristate
>  	depends on NFS_V4_1 && BLK_DEV_DM
> +	depends on 64BIT || LBDAF
>  	default NFS_V4
>  
>  config PNFS_FLEXFILE_LAYOUT
> -- 
> 2.11.0
> 
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