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2237498f0b
linux/drivers/target
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Nicholas Bellinger 2237498f0b target/iblock: Convert WRITE_SAME to blkdev_issue_zeroout 
The people who are actively using iblock_execute_write_same_direct() are
doing so in the context of ESX VAAI BlockZero, together with
EXTENDED_COPY and COMPARE_AND_WRITE primitives.

In practice though I've not seen any users of IBLOCK WRITE_SAME for
anything other than VAAI BlockZero, so just using blkdev_issue_zeroout()
when available, and falling back to iblock_execute_write_same() if the
WRITE_SAME buffer contains anything other than zeros should be OK.

(Hook up max_write_zeroes_sectors to signal LBPRZ feature bit in
 target_configure_unmap_from_queue - nab)

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Mike Christie <mchristi@redhat.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Jens Axboe <axboe@fb.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-06-08 23:26:37 -07:00
..
iscsi iscsi-target: Reject immediate data underflow larger than SCSI transfer length 2017-06-08 22:25:29 -07:00
loopback target: Minimize #include directives 2016-12-09 10:22:28 -08:00
sbp sbp-target: Add an #include directive 2016-12-09 10:20:10 -08:00
tcm_fc Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2017-03-02 14:52:05 -08:00
Kconfig block: make scsi_request and scsi ioctl support optional 2017-01-31 10:53:05 -07:00
Makefile target: Put TCMU under a new config option 2015-04-19 22:41:12 -07:00
target_core_alua.c target: Fix ALUA transition state race between multiple initiators 2017-03-30 23:12:40 -07:00
target_core_alua.h target: Minimize #include directives 2016-12-09 10:22:28 -08:00
target_core_configfs.c target: fixup error message in target_tg_pt_gp_tg_pt_gp_id_store() 2017-05-01 22:21:53 -07:00
target_core_device.c target/iblock: Convert WRITE_SAME to blkdev_issue_zeroout 2017-06-08 23:26:37 -07:00
target_core_fabric_configfs.c target: Avoid mappedlun symlink creation during lun shutdown 2017-03-30 01:36:52 -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 target/fileio: Fix zero-length READ and WRITE handling 2017-05-07 16:05:16 -07:00
target_core_file.h target: Minimize #include directives 2016-12-09 10:22:28 -08:00
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 target/iblock: Convert WRITE_SAME to blkdev_issue_zeroout 2017-06-08 23:26:37 -07:00
target_core_iblock.h target/iblock: convert iblock_req.pending from atomic_t to refcount_t 2017-05-01 22:20:43 -07:00
target_core_internal.h target: Fix kref->refcount underflow in transport_cmd_finish_abort 2017-06-08 22:24:18 -07:00
target_core_pr.c target/user: PGR Support 2017-05-01 22:21:45 -07:00
target_core_pr.h target/pr: update PR out action code table 2017-05-01 22:20:44 -07:00
target_core_pscsi.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2017-05-12 11:44:13 -07:00
target_core_pscsi.h target: Minimize #include directives 2016-12-09 10:22:28 -08:00
target_core_rd.c target: remove dead code 2017-06-08 23:26:37 -07:00
target_core_rd.h target: Minimize #include directives 2016-12-09 10:22:28 -08:00
target_core_sbc.c Revert "target: Fix VERIFY and WRITE VERIFY command parsing" 2017-05-11 01:01:05 -07:00
target_core_spc.c target: Remove enum transport_lunflags_table 2016-03-10 21:48:55 -08:00
target_core_stat.c target: Add counters for ABORT_TASK success + failure 2017-02-26 16:21:06 -08:00
target_core_tmr.c target: Fix kref->refcount underflow in transport_cmd_finish_abort 2017-06-08 22:24:18 -07:00
target_core_tpg.c target: Don't force session reset if queue_depth does not change 2017-05-04 20:01:40 -07:00
target_core_transport.c target: Fix kref->refcount underflow in transport_cmd_finish_abort 2017-06-08 22:24:18 -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: Minimize #include directives 2016-12-09 10:22:28 -08:00
target_core_user.c tcmu: fix crash during device removal 2017-05-23 19:50:49 -07:00
target_core_xcopy.c target: Use correct SCSI status during EXTENDED_COPY exception 2017-02-08 07:46:54 -08:00
target_core_xcopy.h target: check for XCOPY parameter truncation 2017-01-10 08:41:27 -08:00