kernel_optimize_test/drivers/target
Nicholas Bellinger 74f4cf2909 target: Fix regression bug with handling of zero-length data CDBs
This patch fixes a regression bug with the handling of zero-length
data CDBs within transport_generic_new_cmd() code.  The bug was introduced
with the following commit as part of the single task conversion work:

  commit 4101f0a89d
  Author: Christoph Hellwig <hch@infradead.org>
  Date:   Tue Apr 24 00:25:03 2012 -0400

      target: always allocate a single task

where the zero-length check for SCF_SCSI_DATA_SG_IO_CDB was incorrectly
changed to SCF_SCSI_CONTROL_SG_IO_CDB because of the seperate comment
in transport_generic_new_cmd() wrt to control CDBs zero-length handling
introduced in:

  commit 91ec1d3535
  Author: Nicholas Bellinger <nab@linux-iscsi.org>
  Date:   Fri Jan 13 12:01:34 2012 -0800

      target: Add workaround for zero-length control CDB handling

So go ahead and change transport_generic_new_cmd() to handle control+data
zero-length CDBs in the same manner for this special case.

Tested with iscsi-target + loopback fabric port LUNs on 3.6-rc0 code.

This patch will also need to be picked up for 3.5-stable.

(hch: Add proper comment in transport_generic_new_cmd)

Cc: Christoph Hellwig <hch@lst.de>
Cc: Roland Dreier <roland@purestorage.com>
Cc: Andy Grover <agrover@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-08-17 17:24:11 -07:00
..
iscsi iscsi-target: Drop bogus struct file usage for iSCSI/SCTP 2012-07-21 02:44:13 -07:00
loopback target: remove transport_generic_process_write 2012-07-16 17:35:16 -07:00
sbp target: Allow for target_submit_cmd() returning errors 2012-07-17 17:05:05 -07:00
tcm_fc tcm_fc: Avoid debug overhead when not debugging 2012-08-16 17:33:46 -07:00
Kconfig sbp-target: Initial merge of firewire/ieee-1394 target mode support 2012-05-09 15:25:17 -07:00
Makefile target: move code for CDB emulation 2012-07-16 17:27:45 -07:00
target_core_alua.c target: Return error to initiator if SET TARGET PORT GROUPS emulation fails 2012-06-12 20:12:25 -07:00
target_core_alua.h target: Add MI_REPORT_TARGET_PGS ext. header + implict_trans_secs attribute 2012-05-17 00:45:58 -07:00
target_core_configfs.c Revert "target: Do not special-case loop and iscsi fabric module loads" 2012-07-16 17:35:14 -07:00
target_core_device.c target: Make unnecessarily global se_dev_align_max_sectors() static 2012-07-16 17:35:35 -07:00
target_core_fabric_configfs.c target: Remove hba param from core_dev_add_lun 2012-07-16 17:35:22 -07:00
target_core_fabric_lib.c target: remove useless casts 2011-12-14 11:28:07 +00:00
target_core_file.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2012-08-01 10:26:23 -07:00
target_core_file.h target/file: Use O_DSYNC by default for FILEIO backends 2012-06-02 23:47:20 -07:00
target_core_hba.c target: header reshuffle, part2 2011-12-14 11:26:05 +00:00
target_core_iblock.c target: Check number of unmap descriptors against our limit 2012-07-16 17:35:36 -07:00
target_core_iblock.h target/iblock: Add parameter to specify read-only devices 2012-07-16 17:29:11 -07:00
target_core_internal.h target: refactor core_update_device_list_for_node() 2012-07-16 17:35:24 -07:00
target_core_pr.c target: Remove unneeded double parentheses 2012-07-16 17:35:22 -07:00
target_core_pr.h target: replace ->execute_task with ->execute_cmd 2012-05-06 15:11:14 -07:00
target_core_pscsi.c target/pscsi: Fix bug with REPORT_LUNs handling for SCSI passthrough 2012-08-16 23:36:55 -07:00
target_core_pscsi.h target: remove struct se_task 2012-05-06 15:11:26 -07:00
target_core_rd.c target: add struct spc_ops + initial ->execute_rw pointer usage 2012-07-16 17:29:12 -07:00
target_core_rd.h target: don't limit transfer sizes for the ramdisk backend 2012-04-14 17:40:30 -07:00
target_core_sbc.c target: move unmap to struct spc_ops 2012-07-16 17:35:14 -07:00
target_core_spc.c target: Move MAINTENANCE_[IN,OUT] from pscsi_parse_cdb -> spc_parse_cdb 2012-07-16 17:28:40 -07:00
target_core_stat.c target: remove obvious warnings 2012-03-15 19:16:09 -07:00
target_core_tmr.c target: replace the processing thread with a TMR work queue 2012-07-16 17:35:21 -07:00
target_core_tpg.c target: refactor core_update_device_list_for_node() 2012-07-16 17:35:24 -07:00
target_core_transport.c target: Fix regression bug with handling of zero-length data CDBs 2012-08-17 17:24:11 -07:00
target_core_ua.c target: Use array_zalloc for device_list 2012-03-15 19:15:51 -07:00
target_core_ua.h