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Keith Busch 06c1e3902a blk-integrity: empty implementation when disabled 
This patch moves the blk_integrity_payload definition outside the
CONFIG_BLK_DEV_INTERITY dependency and provides empty function
implementations when the kernel configuration disables integrity
extensions. This simplifies drivers that make use of these to map user
data so they don't need to repeat the same configuration checks.

Signed-off-by: Keith Busch <keith.busch@intel.com>

Updated by Jens to pass an error pointer return from
bio_integrity_alloc(), otherwise if CONFIG_BLK_DEV_INTEGRITY isn't
set, we return a weird ENOMEM from __nvme_submit_user_cmd()
if a meta buffer is set.

Signed-off-by: Jens Axboe <axboe@fb.com>
 		2015-12-03 09:32:21 -07:00
..
iscsi Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2015-11-13 20:04:17 -08:00
loopback SCSI misc on 20151113 2015-11-13 20:35:54 -08:00
sbp target: use per-attribute show and store methods 2015-10-13 22:17:49 -07:00
tcm_fc target: use per-attribute show and store methods 2015-10-13 22:17:49 -07:00
Kconfig target: Put TCMU under a new config option 2015-04-19 22:41:12 -07:00
Makefile target: Put TCMU under a new config option 2015-04-19 22:41:12 -07:00
target_core_alua.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2015-07-04 14:13:43 -07:00
target_core_alua.h target: Subsume se_port + t10_alua_tg_pt_gp_member into se_lun 2015-06-01 00:26:38 -07:00
target_core_configfs.c target: use per-attribute show and store methods 2015-10-13 22:17:49 -07:00
target_core_device.c target: Make TCM_WRITE_PROTECT failure honor D_SENSE bit 2015-09-24 23:17:27 -07:00
target_core_fabric_configfs.c target: use per-attribute show and store methods 2015-10-13 22:17:49 -07:00
target_core_fabric_lib.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2015-07-04 14:13:43 -07:00
target_core_file.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2015-07-04 14:13:43 -07:00
target_core_file.h target/file: Remove fd_prot bounce buffer 2015-05-30 22:41:42 -07:00
target_core_hba.c target: Fix target_sense_desc_format NULL pointer dereference 2015-09-24 23:17:23 -07:00
target_core_iblock.c blk-integrity: empty implementation when disabled 2015-12-03 09:32:21 -07:00
target_core_iblock.h target: kill struct se_subsystem_dev 2012-11-06 20:55:43 -08:00
target_core_internal.h target: use per-attribute show and store methods 2015-10-13 22:17:49 -07:00
target_core_pr.c target: Fix PR registration + APTPL RCU conversion regression 2015-09-24 23:17:07 -07:00
target_core_pr.h target: use 64-bit LUNs 2015-06-15 23:26:01 -07:00
target_core_pscsi.c block: add a bi_error field to struct bio 2015-07-29 08:55:15 -06:00
target_core_pscsi.h SCSI misc on 20150622 2015-06-23 15:55:44 -07:00
target_core_rd.c Merge branch 'for-4.3/sg' of git://git.kernel.dk/linux-block 2015-09-02 13:22:38 -07:00
target_core_rd.h target/rd: Add support for protection SGL setup + release 2014-01-19 02:22:05 +00:00
target_core_sbc.c target: check DPO/FUA usage for COMPARE AND WRITE 2015-07-31 00:22:23 -07:00
target_core_spc.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2015-09-11 19:00:42 -07:00
target_core_stat.c target: use per-attribute show and store methods 2015-10-13 22:17:49 -07:00
target_core_tmr.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2015-07-04 14:13:43 -07:00
target_core_tpg.c target: Propigate backend read-only to core_tpg_add_lun 2015-09-24 23:17:21 -07:00
target_core_transport.c target: Remove no-op conditional 2015-09-11 00:32:32 -07:00
target_core_ua.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2015-07-04 14:13:43 -07:00
target_core_ua.h target: Send UA when changing LUN inventory 2015-06-23 00:43:02 -07:00
target_core_user.c target: use stringify.h instead of own definition 2015-09-11 00:32:36 -07:00
target_core_xcopy.c target: Attach EXTENDED_COPY local I/O descriptors to xcopy_pt_sess 2015-09-11 00:32:26 -07:00
target_core_xcopy.h target: Add support for EXTENDED_COPY copy offload emulation 2013-09-10 16:48:43 -07:00