[#LU-11096] Lustre doesn't build if kernel has no blk integrity

Similar to ~~LU-11224~~, the T10PI feature assumes that CONFIG_BLK_DEV_INTEGRITY=y is set.

I see this on SLES 12 SP3, but presumably similar failures would occur on any kernel.

[  232s] In file included from /home/abuild/rpmbuild/BUILD/cray-lustre-2.11.53.87/lustre/include/lvfs.h:45:0,
[  232s]                  from /home/abuild/rpmbuild/BUILD/cray-lustre-2.11.53.87/lustre/include/obd.h:53,
[  232s]                  from /home/abuild/rpmbuild/BUILD/cray-lustre-2.11.53.87/lustre/fid/fid_request.c:43:
[  232s] /home/abuild/rpmbuild/BUILD/cray-lustre-2.11.53.87/lustre/include/lustre_compat.h: In function 'blk_integrity_interval':
[  232s] /home/abuild/rpmbuild/BUILD/cray-lustre-2.11.53.87/lustre/include/lustre_compat.h:708:11: error: dereferencing pointer to incomplete type
[  232s]   return bi->sector_size; 
[  232s] /home/abuild/rpmbuild/BUILD/cray-lustre-2.11.53.87/lustre/include/lustre_compat.h: In function 'blk_integrity_name':
[  232s] /home/abuild/rpmbuild/BUILD/cray-lustre-2.11.53.87/lustre/include/lustre_compat.h:717:11: error: dereferencing pointer to incomplete type
[  232s]   return bi->name;

[LU-11096] Lustre doesn't build if kernel has no blk integrity Created: 24/Jun/18 Updated: 23/Aug/18 Resolved: 23/Aug/18
Status:	Resolved
Project:	Lustre
Component/s:	None
Affects Version/s:	None
Fix Version/s:	Lustre 2.12.0

[LU-11096] Lustre doesn't build if kernel has no blk integrity Created: 24/Jun/18 Updated: 23/Aug/18 Resolved: 23/Aug/18