[PATCH] nfsd: allow SCSI layout support without Block layout

[Benjamin Coddington]

On 6 Jul 2016, at 5:19, Dave Chinner wrote:

> On Tue, Jul 05, 2016 at 09:48:47PM -0400, Benjamin Coddington wrote:
>> We shouldn't have to configure both NFSD_BLOCKLAYOUT and 
>> NFSD_SCSILAYOUT if
>> all we want are SCSI layouts on the server, so define the xfs export
>> operations for either configuration.
>>
>> Signed-off-by: Benjamin Coddington <bcodding at redhat.com>
>
> I don't really like exploding config option dependencies into
> subsystems that aren't actually related to the config options.
> It's confusing enough laready that we've got XFS code dependent on
> PNFSD config options without adding more to it. Instead, I'd
> suggest this should be resolved in the kconfig files. i.e. make
> CONFIG_NFSD_SCSILAYOUT=y select CONFIG_NFSD_BLOCKLAYOUT to resolve
> the config dependency at config time.

But the point is to leave CONFIG_NFSD_BLOCKLAYOUT undefined otherwise 
knfsd
will advertise block layouts to clients -- which we don't want.

Would a third define specific for xfs_export_operations that gets
set in kconfig files work for you?  Something like XFS_PNFS_EXPORT_OPS.

Ben