Commit Graph

2237 Commits

Author SHA1 Message Date
Linus Torvalds a022f7d575 block-5.14-2021-07-08
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Merge tag 'block-5.14-2021-07-08' of git://git.kernel.dk/linux-block

Pull more block updates from Jens Axboe:
 "A combination of changes that ended up depending on both the driver
  and core branch (and/or the IDE removal), and a few late arriving
  fixes. In detail:

   - Fix io ticks wrap-around issue (Chunguang)

   - nvme-tcp sock locking fix (Maurizio)

   - s390-dasd fixes (Kees, Christoph)

   - blk_execute_rq polling support (Keith)

   - blk-cgroup RCU iteration fix (Yu)

   - nbd backend ID addition (Prasanna)

   - Partition deletion fix (Yufen)

   - Use blk_mq_alloc_disk for mmc, mtip32xx, ubd (Christoph)

   - Removal of now dead block request types due to IDE removal
     (Christoph)

   - Loop probing and control device cleanups (Christoph)

   - Device uevent fix (Christoph)

   - Misc cleanups/fixes (Tetsuo, Christoph)"

* tag 'block-5.14-2021-07-08' of git://git.kernel.dk/linux-block: (34 commits)
  blk-cgroup: prevent rcu_sched detected stalls warnings while iterating blkgs
  block: fix the problem of io_ticks becoming smaller
  nvme-tcp: can't set sk_user_data without write_lock
  loop: remove unused variable in loop_set_status()
  block: remove the bdgrab in blk_drop_partitions
  block: grab a device refcount in disk_uevent
  s390/dasd: Avoid field over-reading memcpy()
  dasd: unexport dasd_set_target_state
  block: check disk exist before trying to add partition
  ubd: remove dead code in ubd_setup_common
  nvme: use return value from blk_execute_rq()
  block: return errors from blk_execute_rq()
  nvme: use blk_execute_rq() for passthrough commands
  block: support polling through blk_execute_rq
  block: remove REQ_OP_SCSI_{IN,OUT}
  block: mark blk_mq_init_queue_data static
  loop: rewrite loop_exit using idr_for_each_entry
  loop: split loop_lookup
  loop: don't allow deleting an unspecified loop device
  loop: move loop_ctl_mutex locking into loop_add
  ...
2021-07-09 12:05:33 -07:00
Linus Torvalds bd31b9efbf SCSI misc on 20210702
This series consists of the usual driver updates (ufs, ibmvfc,
 megaraid_sas, lpfc, elx, mpi3mr, qedi, iscsi, storvsc, mpt3sas) with
 elx and mpi3mr being new drivers.  The major core change is a rework
 to drop the status byte handling macros and the old bit shifted
 definitions and the rest of the updates are minor fixes.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This series consists of the usual driver updates (ufs, ibmvfc,
  megaraid_sas, lpfc, elx, mpi3mr, qedi, iscsi, storvsc, mpt3sas) with
  elx and mpi3mr being new drivers.

  The major core change is a rework to drop the status byte handling
  macros and the old bit shifted definitions and the rest of the updates
  are minor fixes"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (287 commits)
  scsi: aha1740: Avoid over-read of sense buffer
  scsi: arcmsr: Avoid over-read of sense buffer
  scsi: ips: Avoid over-read of sense buffer
  scsi: ufs: ufs-mediatek: Add missing of_node_put() in ufs_mtk_probe()
  scsi: elx: libefc: Fix IRQ restore in efc_domain_dispatch_frame()
  scsi: elx: libefc: Fix less than zero comparison of a unsigned int
  scsi: elx: efct: Fix pointer error checking in debugfs init
  scsi: elx: efct: Fix is_originator return code type
  scsi: elx: efct: Fix link error for _bad_cmpxchg
  scsi: elx: efct: Eliminate unnecessary boolean check in efct_hw_command_cancel()
  scsi: elx: efct: Do not use id uninitialized in efct_lio_setup_session()
  scsi: elx: efct: Fix error handling in efct_hw_init()
  scsi: elx: efct: Remove redundant initialization of variable lun
  scsi: elx: efct: Fix spelling mistake "Unexected" -> "Unexpected"
  scsi: lpfc: Fix build error in lpfc_scsi.c
  scsi: target: iscsi: Remove redundant continue statement
  scsi: qla4xxx: Remove redundant continue statement
  scsi: ppa: Switch to use module_parport_driver()
  scsi: imm: Switch to use module_parport_driver()
  scsi: mpt3sas: Fix error return value in _scsih_expander_add()
  ...
2021-07-02 15:14:36 -07:00
Christoph Hellwig da6269da4c block: remove REQ_OP_SCSI_{IN,OUT}
With the legacy IDE driver gone drivers now use either REQ_OP_DRV_*
or REQ_OP_SCSI_*, so unify the two concepts of passthrough requests
into a single one.

Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-06-30 15:34:19 -06:00
Colin Ian King 79366f0a8d scsi: target: iscsi: Remove redundant continue statement
The continue statement at the end of a loop has no effect, remove it.

Link: https://lore.kernel.org/r/20210617114347.10247-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Addresses-Coverity: ("Continue has no effect")
2021-06-18 23:01:03 -04:00
Bart Van Assche 149d0e489e scsi: core: Introduce enums for the SAM and host status codes
Make it possible for the compiler to verify whether SAM and host
status codes are used correctly.

[mkp: resolve conflicts with Hannes' SCSI result series]

Link: https://lore.kernel.org/r/20210524025457.11299-3-bvanassche@acm.org
Cc: Hannes Reinecke <hare@suse.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-02 23:09:39 -04:00
Maurizio Lombardi 515da6f429 scsi: target: core: Fix warning on realtime kernels
On realtime kernels, spin_lock_irq*(spinlock_t) do not disable the
interrupts, a call to irqs_disabled() will return false thus firing a
warning in __transport_wait_for_tasks().

Remove the warning and also replace assert_spin_locked() with
lockdep_assert_held()

Link: https://lore.kernel.org/r/20210531121326.3649-1-mlombard@redhat.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-31 22:59:13 -04:00
Hannes Reinecke 14b40c1e7c scsi: target: Use standard SAM status types
target_complete_cmd() and friends requires a SAM status type, so passing
GOOD here is actually wrong.

Link: https://lore.kernel.org/r/20210427083046.31620-40-hare@suse.de
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-31 22:48:24 -04:00
Hannes Reinecke 464a00c9e0 scsi: core: Kill DRIVER_SENSE
Replace the check for DRIVER_SENSE with a check for
scsi_status_is_check_condition().

Audit all callsites to ensure the SAM status is set correctly. For
backwards compability move the DRIVER_SENSE definition to sg.h, and update
sg, bsg, and scsi_ioctl to set the DRIVER_SENSE driver_status whenever
SAM_STAT_CHECK_CONDITION is present.

[mkp: fix zeroday srp warning]

Link: https://lore.kernel.org/r/20210427083046.31620-10-hare@suse.de
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

fix
2021-05-31 22:48:21 -04:00
kernel test robot 824731258b scsi: target: tcmu: Fix boolreturn.cocci warnings
drivers/target/target_core_user.c:1424:9-10: WARNING: return of 0/1 in function 'tcmu_handle_completions' with return type bool

 Return statements in functions returning bool should use
 true/false instead of 1/0.

Generated by: scripts/coccinelle/misc/boolreturn.cocci

Link: https://lore.kernel.org/r/20210515230358.GA97544@60d1edce16e0
Fixes: 9814b55cde ("scsi: target: tcmu: Return from tcmu_handle_completions() if cmd_id not found")
CC: Bodo Stroesser <bostroesser@gmail.com>
Reported-by: kernel test robot <lkp@intel.com>
Acked-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: kernel test robot <lkp@intel.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-21 17:14:21 -04:00
Mike Christie 5aaeca258f scsi: target: iblock: Fix smp_processor_id() BUG messages
This has us use raw_smp_processor_id() in iblock's plug_device callout.
smp_processor_id() is not needed here, because we are running from a per
CPU work item that is also queued to run on a worker thread that is
normally bound to a specific CPU. If the worker thread did end up switching
CPUs then it's handled the same way we handle when the work got moved to a
different CPU's worker thread, where we will just end up sending I/O from
the new CPU.

Link: https://lore.kernel.org/r/20210519222640.5153-1-michael.christie@oracle.com
Fixes: 415ccd9811 ("scsi: target: iblock: Add backend plug/unplug callouts")
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-21 16:40:00 -04:00
Bodo Stroesser b4150b6881 scsi: target: tcmu: Fix xarray RCU warning
Commit f5ce815f34 ("scsi: target: tcmu: Support DATA_BLOCK_SIZE = N *
PAGE_SIZE") introduced xas_next() calls to iterate xarray elements.  These
calls triggered the WARNING "suspicious RCU usage" at tcmu device set up
[1]. In the call stack of xas_next(), xas_load() was called.  According to
its comment, this function requires "the xa_lock or the RCU lock".

To avoid the warning:

 - Guard the small loop calling xas_next() in tcmu_get_empty_block with RCU
   lock.

 - In the large loop in tcmu_copy_data using RCU lock would possibly
   disable preemtion for a long time (copy multi MBs). Therefore replace
   XA_STATE, xas_set and xas_next with a single xa_load.

[1]

[ 1899.867091] =============================
[ 1899.871199] WARNING: suspicious RCU usage
[ 1899.875310] 5.13.0-rc1+ #41 Not tainted
[ 1899.879222] -----------------------------
[ 1899.883299] include/linux/xarray.h:1182 suspicious rcu_dereference_check() usage!
[ 1899.890940] other info that might help us debug this:
[ 1899.899082] rcu_scheduler_active = 2, debug_locks = 1
[ 1899.905719] 3 locks held by kworker/0:1/1368:
[ 1899.910161]  #0: ffffa1f8c8b98738 ((wq_completion)target_submission){+.+.}-{0:0}, at: process_one_work+0x1ee/0x580
[ 1899.920732]  #1: ffffbd7040cd7e78 ((work_completion)(&q->sq.work)){+.+.}-{0:0}, at: process_one_work+0x1ee/0x580
[ 1899.931146]  #2: ffffa1f8d1c99768 (&udev->cmdr_lock){+.+.}-{3:3}, at: tcmu_queue_cmd+0xea/0x160 [target_core_user]
[ 1899.941678] stack backtrace:
[ 1899.946093] CPU: 0 PID: 1368 Comm: kworker/0:1 Not tainted 5.13.0-rc1+ #41
[ 1899.953070] Hardware name: System manufacturer System Product Name/PRIME Z270-A, BIOS 1302 03/15/2018
[ 1899.962459] Workqueue: target_submission target_queued_submit_work [target_core_mod]
[ 1899.970337] Call Trace:
[ 1899.972839]  dump_stack+0x6d/0x89
[ 1899.976222]  xas_descend+0x10e/0x120
[ 1899.979875]  xas_load+0x39/0x50
[ 1899.983077]  tcmu_get_empty_blocks+0x115/0x1c0 [target_core_user]
[ 1899.989318]  queue_cmd_ring+0x1da/0x630 [target_core_user]
[ 1899.994897]  ? rcu_read_lock_sched_held+0x3f/0x70
[ 1899.999695]  ? trace_kmalloc+0xa6/0xd0
[ 1900.003501]  ? __kmalloc+0x205/0x380
[ 1900.007167]  tcmu_queue_cmd+0x12f/0x160 [target_core_user]
[ 1900.012746]  __target_execute_cmd+0x23/0xa0 [target_core_mod]
[ 1900.018589]  transport_generic_new_cmd+0x1f3/0x370 [target_core_mod]
[ 1900.025046]  transport_handle_cdb_direct+0x34/0x50 [target_core_mod]
[ 1900.031517]  target_queued_submit_work+0x43/0xe0 [target_core_mod]
[ 1900.037837]  process_one_work+0x268/0x580
[ 1900.041952]  ? process_one_work+0x580/0x580
[ 1900.046195]  worker_thread+0x55/0x3b0
[ 1900.049921]  ? process_one_work+0x580/0x580
[ 1900.054192]  kthread+0x143/0x160
[ 1900.057499]  ? kthread_create_worker_on_cpu+0x40/0x40
[ 1900.062661]  ret_from_fork+0x1f/0x30

Link: https://lore.kernel.org/r/20210519135440.26773-1-bostroesser@gmail.com
Fixes: f5ce815f34 ("scsi: target: tcmu: Support DATA_BLOCK_SIZE = N * PAGE_SIZE")
Reported-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Tested-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-21 16:15:48 -04:00
Shin'ichiro Kawasaki 70ca3c57ff scsi: target: core: Avoid smp_processor_id() in preemptible code
The BUG message "BUG: using smp_processor_id() in preemptible [00000000]
code" was observed for TCMU devices with kernel config DEBUG_PREEMPT.

The message was observed when blktests block/005 was run on TCMU devices
with fileio backend or user:zbc backend [1]. The commit 1130b499b4
("scsi: target: tcm_loop: Use LIO wq cmd submission helper") triggered the
symptom. The commit modified work queue to handle commands and changed
'current->nr_cpu_allowed' at smp_processor_id() call.

The message was also observed at system shutdown when TCMU devices were not
cleaned up [2]. The function smp_processor_id() was called in SCSI host
work queue for abort handling, and triggered the BUG message. This symptom
was observed regardless of the commit 1130b499b4 ("scsi: target:
tcm_loop: Use LIO wq cmd submission helper").

To avoid the preemptible code check at smp_processor_id(), get CPU ID with
raw_smp_processor_id() instead. The CPU ID is used for performance
improvement then thread move to other CPU will not affect the code.

[1]

[   56.468103] run blktests block/005 at 2021-05-12 14:16:38
[   57.369473] check_preemption_disabled: 85 callbacks suppressed
[   57.369480] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1511
[   57.369506] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1510
[   57.369512] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1506
[   57.369552] caller is __target_init_cmd+0x157/0x170 [target_core_mod]
[   57.369606] CPU: 4 PID: 1506 Comm: fio Not tainted 5.13.0-rc1+ #34
[   57.369613] Hardware name: System manufacturer System Product Name/PRIME Z270-A, BIOS 1302 03/15/2018
[   57.369617] Call Trace:
[   57.369621] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1507
[   57.369628]  dump_stack+0x6d/0x89
[   57.369642]  check_preemption_disabled+0xc8/0xd0
[   57.369628] caller is __target_init_cmd+0x157/0x170 [target_core_mod]
[   57.369655]  __target_init_cmd+0x157/0x170 [target_core_mod]
[   57.369695]  target_init_cmd+0x76/0x90 [target_core_mod]
[   57.369732]  tcm_loop_queuecommand+0x109/0x210 [tcm_loop]
[   57.369744]  scsi_queue_rq+0x38e/0xc40
[   57.369761]  __blk_mq_try_issue_directly+0x109/0x1c0
[   57.369779]  blk_mq_try_issue_directly+0x43/0x90
[   57.369790]  blk_mq_submit_bio+0x4e5/0x5d0
[   57.369812]  submit_bio_noacct+0x46e/0x4e0
[   57.369830]  __blkdev_direct_IO_simple+0x1a3/0x2d0
[   57.369859]  ? set_init_blocksize.isra.0+0x60/0x60
[   57.369880]  generic_file_read_iter+0x89/0x160
[   57.369898]  blkdev_read_iter+0x44/0x60
[   57.369906]  new_sync_read+0x102/0x170
[   57.369929]  vfs_read+0xd4/0x160
[   57.369941]  __x64_sys_pread64+0x6e/0xa0
[   57.369946]  ? lockdep_hardirqs_on+0x79/0x100
[   57.369958]  do_syscall_64+0x3a/0x70
[   57.369965]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[   57.369973] RIP: 0033:0x7f7ed4c1399f
[   57.369979] Code: 08 89 3c 24 48 89 4c 24 18 e8 7d f3 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 11 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 cd f3 ff ff 48 8b
[   57.369983] RSP: 002b:00007ffd7918c580 EFLAGS: 00000293 ORIG_RAX: 0000000000000011
[   57.369990] RAX: ffffffffffffffda RBX: 00000000015b4540 RCX: 00007f7ed4c1399f
[   57.369993] RDX: 0000000000001000 RSI: 00000000015de000 RDI: 0000000000000009
[   57.369996] RBP: 00000000015b4540 R08: 0000000000000000 R09: 0000000000000001
[   57.369999] R10: 0000000000e5c000 R11: 0000000000000293 R12: 00007f7eb5269a70
[   57.370002] R13: 0000000000000000 R14: 0000000000001000 R15: 00000000015b4568
[   57.370031] CPU: 7 PID: 1507 Comm: fio Not tainted 5.13.0-rc1+ #34
[   57.370036] Hardware name: System manufacturer System Product Name/PRIME Z270-A, BIOS 1302 03/15/2018
[   57.370039] Call Trace:
[   57.370045]  dump_stack+0x6d/0x89
[   57.370056]  check_preemption_disabled+0xc8/0xd0
[   57.370068]  __target_init_cmd+0x157/0x170 [target_core_mod]
[   57.370121]  target_init_cmd+0x76/0x90 [target_core_mod]
[   57.370178]  tcm_loop_queuecommand+0x109/0x210 [tcm_loop]
[   57.370197]  scsi_queue_rq+0x38e/0xc40
[   57.370224]  __blk_mq_try_issue_directly+0x109/0x1c0
...

[2]

[  117.458597] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u16:8
[  117.467279] caller is __target_init_cmd+0x157/0x170 [target_core_mod]
[  117.473893] CPU: 1 PID: 418 Comm: kworker/u16:6 Not tainted 5.13.0-rc1+ #34
[  117.481150] Hardware name: System manufacturer System Product Name/PRIME Z270-A, BIOS 8
[  117.481153] Workqueue: scsi_tmf_7 scmd_eh_abort_handler
[  117.481156] Call Trace:
[  117.481158]  dump_stack+0x6d/0x89
[  117.481162]  check_preemption_disabled+0xc8/0xd0
[  117.512575]  target_submit_tmr+0x41/0x150 [target_core_mod]
[  117.519705]  tcm_loop_issue_tmr+0xa7/0x100 [tcm_loop]
[  117.524913]  tcm_loop_abort_task+0x43/0x60 [tcm_loop]
[  117.530137]  scmd_eh_abort_handler+0x7b/0x230
[  117.534681]  process_one_work+0x268/0x580
[  117.538862]  worker_thread+0x55/0x3b0
[  117.542652]  ? process_one_work+0x580/0x580
[  117.548351]  kthread+0x143/0x160
[  117.551675]  ? kthread_create_worker_on_cpu+0x40/0x40
[  117.556873]  ret_from_fork+0x1f/0x30

Link: https://lore.kernel.org/r/20210515070315.215801-1-shinichiro.kawasaki@wdc.com
Fixes: 1526d9f10c ("scsi: target: Make state_list per CPU")
Cc: stable@vger.kernel.org # v5.11+
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-21 16:14:02 -04:00
Konstantin Shelekhin b790a56d66 scsi: target: core: Add the VERSION DESCRIPTOR fields to the INQUIRY data
Extend the standard INQUIRY data to 96 bytes and fill in the VERSION
DESCRIPTOR fields.

The layout follows SPC-4:

 - SCSI architecture standard
 - SCSI transport protocol standard
 - SCSI primary command set standard
 - SCSI device type command set standard

All version descriptor values are defined as "no version claimed" because
some initiators fail to recognize anything else.

[mkp: whitespace]

Link: https://lore.kernel.org/r/20210513192804.1252142-3-k.shelekhin@yadro.com
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Konstantin Shelekhin <k.shelekhin@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-15 14:34:26 -04:00
Konstantin Shelekhin 64ae33ef74 scsi: target: core: Bump INQUIRY VERSION to SPC-4
Bump the SCSI primary command set standard to SPC-4. The upcoming version
descriptors will report newer SCSI standards (like SBC-3) that are not
defined in SPC-3.

Link: https://lore.kernel.org/r/20210513192804.1252142-2-k.shelekhin@yadro.com
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Konstantin Shelekhin <k.shelekhin@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-15 14:34:26 -04:00
Sergey Samoylenko 2469f1e041 scsi: target: core: Add configurable IEEE Company ID attribute
Implement an attribute which provides a way to set a company specific WWN
in configfs via:

  target/core/$backstore/$name/wwn/company_id

The Open Fabrics Alliance ID 001405h remains the default.

Link: https://lore.kernel.org/r/20210420185920.42431-3-s.samoylenko@yadro.com
Signed-off-by: Sergey Samoylenko <s.samoylenko@yadro.com>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-15 14:14:28 -04:00
Sergey Samoylenko 17f947b8b0 scsi: target: core: Unify NAA identifier generation
Both the INQUIRY handling and the XCOPY implementation provide functions to
generate an NAA designator. In addition, these functions are poorly named:

 - spc_parse_naa_6h_vendor_specific()
 - target_xcopy_gen_naa_ieee()

Introduce a common NAA 6 designator generation function,
spc_gen_naa_6h_vendor_specific().

Link: https://lore.kernel.org/r/20210420185920.42431-2-s.samoylenko@yadro.com
Signed-off-by: Sergey Samoylenko <s.samoylenko@yadro.com>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-15 14:14:28 -04:00
Jiapeng Chong f8a78e9118 scsi: target: sbp_target: Remove redundant assignment to pg_size
Variable pg_size is set to '0x100 << pg_size', but this value is never read
and it is not used later on. Hence it is a redundant assignment and can be
removed.

Clean up the following clang-analyzer warning:

drivers/target/sbp/sbp_target.c:1264:3: warning: Value stored to
'pg_size' is never read [clang-analyzer-deadcode.DeadStores].

Link: https://lore.kernel.org/r/1620902977-57076-1-git-send-email-jiapeng.chong@linux.alibaba.com
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-14 23:09:24 -04:00
Bodo Stroesser 3ac0fcb4b1 scsi: target: tcmu: Rename TCM_DEV_BIT_PLUGGED to TCMU_DEV_BIT_PLUGGED
The bit definition TCM_DEV_BIT_PLUGGED should correctly be named
TCMU_DEV_BIT_PLUGGED, since all other bits in the same bitfield have prefix
TCMU_.

Link: https://lore.kernel.org/r/20210512140654.31249-1-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-14 22:58:27 -04:00
Guenter Roeck 998da772fd scsi: target: iscsi: Drop unnecessary container_of()
The structure pointer passed to container_of() is never NULL; that was
already checked. That means that the result of container_of() operations
on it is also never NULL, even though se_node_acl is the first element
of the structure embedding it. On top of that, it is misleading to perform
a NULL check on the result of container_of() because the position of the
contained element could change, which would make the test invalid.
Remove the unnecessary NULL check.

As it turns out, the container_of operation was only made for the purpose
of the NULL check. If the container_of is actually needed, it is repeated
later. Remove the container_of operation as well.

The NULL check was identified and removed with the following Coccinelle
script.

@@
type t;
identifier v;
statement s;
@@

<+...
(
  t v = container_of(...);
|
  v = container_of(...);
)
  ...
  when != v
- if (\( !v \| v == NULL \) ) s
...+>

Link: https://lore.kernel.org/r/20210510040817.2050266-1-linux@roeck-us.net
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Hou Pu <houpu@bytedance.com>
Cc: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-14 22:40:45 -04:00
Varun Prakash 6ecdafaec7 scsi: target: cxgbit: Unmap DMA buffer before calling target_execute_cmd()
Instead of calling dma_unmap_sg() after completing WRITE I/O, call
dma_unmap_sg() before calling target_execute_cmd() to sync the DMA buffer.

Link: https://lore.kernel.org/r/1618403949-3443-1-git-send-email-varun@chelsio.com
Cc: <stable@vger.kernel.org> # 5.4+
Signed-off-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-14 22:28:17 -04:00
Yang Yingliang 6235bef6f9 scsi: target: iscsi: Switch to kmemdup_nul()
Use kmemdup_nul() helper instead of open-coding to simplify the code.

Link: https://lore.kernel.org/r/20210402092517.2445595-1-yangyingliang@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-10 13:24:03 -04:00
Linus Torvalds 07db05638a SCSI misc on 20210508
This is a set of minor fixes in various drivers (qla2xxx, ufs,
 scsi_debug, lpfc) one doc fix and a fairly large update to the fnic
 driver to remove the open coded iteration functions in favour of the
 scsi provided ones.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull more SCSI updates from James Bottomley:
 "This is a set of minor fixes in various drivers (qla2xxx, ufs,
  scsi_debug, lpfc) one doc fix and a fairly large update to the fnic
  driver to remove the open coded iteration functions in favour of the
  scsi provided ones"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: fnic: Use scsi_host_busy_iter() to traverse commands
  scsi: fnic: Kill 'exclude_id' argument to fnic_cleanup_io()
  scsi: scsi_debug: Fix cmd_per_lun, set to max_queue
  scsi: ufs: core: Narrow down fast path in system suspend path
  scsi: ufs: core: Cancel rpm_dev_flush_recheck_work during system suspend
  scsi: ufs: core: Do not put UFS power into LPM if link is broken
  scsi: qla2xxx: Prevent PRLI in target mode
  scsi: qla2xxx: Add marginal path handling support
  scsi: target: tcmu: Return from tcmu_handle_completions() if cmd_id not found
  scsi: ufs: core: Fix a typo in ufs-sysfs.c
  scsi: lpfc: Fix bad memory access during VPD DUMP mailbox command
  scsi: lpfc: Fix DMA virtual address ptr assignment in bsg
  scsi: lpfc: Fix illegal memory access on Abort IOCBs
  scsi: blk-mq: Fix build warning when making htmldocs
2021-05-08 10:44:36 -07:00
Bodo Stroesser 9814b55cde scsi: target: tcmu: Return from tcmu_handle_completions() if cmd_id not found
If tcmu_handle_completions() finds an invalid cmd_id while looping over cmd
responses from userspace it sets TCMU_DEV_BIT_BROKEN and breaks the
loop. This means that it does further handling for the tcmu device.

Skip that handling by replacing 'break' with 'return'.

Additionally change tcmu_handle_completions() from unsigned int to bool,
since the value used in return already is bool.

Link: https://lore.kernel.org/r/20210423150123.24468-1-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-28 22:55:00 -04:00
Linus Torvalds d72cd4ad41 SCSI misc on 20210428
This series consists of the usual driver updates (ufs, target, tcmu,
 smartpqi, lpfc, zfcp, qla2xxx, mpt3sas, pm80xx).  The major core
 change is using a sbitmap instead of an atomic for queue tracking.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This consists of the usual driver updates (ufs, target, tcmu,
  smartpqi, lpfc, zfcp, qla2xxx, mpt3sas, pm80xx).

  The major core change is using a sbitmap instead of an atomic for
  queue tracking"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (412 commits)
  scsi: target: tcm_fc: Fix a kernel-doc header
  scsi: target: Shorten ALUA error messages
  scsi: target: Fix two format specifiers
  scsi: target: Compare explicitly with SAM_STAT_GOOD
  scsi: sd: Introduce a new local variable in sd_check_events()
  scsi: dc395x: Open-code status_byte(u8) calls
  scsi: 53c700: Open-code status_byte(u8) calls
  scsi: smartpqi: Remove unused functions
  scsi: qla4xxx: Remove an unused function
  scsi: myrs: Remove unused functions
  scsi: myrb: Remove unused functions
  scsi: mpt3sas: Fix two kernel-doc headers
  scsi: fcoe: Suppress a compiler warning
  scsi: libfc: Fix a format specifier
  scsi: aacraid: Remove an unused function
  scsi: core: Introduce enum scsi_disposition
  scsi: core: Modify the scsi_send_eh_cmnd() return value for the SDEV_BLOCK case
  scsi: core: Rename scsi_softirq_done() into scsi_complete()
  scsi: core: Remove an incorrect comment
  scsi: core: Make the scsi_alloc_sgtables() documentation more accurate
  ...
2021-04-28 17:22:10 -07:00
Linus Torvalds 6c00292113 for-5.13/block-2021-04-27
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Merge tag 'for-5.13/block-2021-04-27' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:
 "Pretty quiet round this time, which is nice. In detail:

   - Series revamping bounce buffer support (Christoph)

   - Dead code removal (Christoph, Bart)

   - Partition iteration revamp, now using xarray (Christoph)

   - Passthrough request scheduler improvements (Lin)

   - Series of BFQ improvements (Paolo)

   - Fix ioprio task iteration (Peter)

   - Various little tweaks and fixes (Tejun, Saravanan, Bhaskar, Max,
     Nikolay)"

* tag 'for-5.13/block-2021-04-27' of git://git.kernel.dk/linux-block: (41 commits)
  blk-iocost: don't ignore vrate_min on QD contention
  blk-mq: Fix spurious debugfs directory creation during initialization
  bfq/mq-deadline: remove redundant check for passthrough request
  blk-mq: bypass IO scheduler's limit_depth for passthrough request
  block: Remove an obsolete comment from sg_io()
  block: move bio_list_copy_data to pktcdvd
  block: remove zero_fill_bio_iter
  block: add queue_to_disk() to get gendisk from request_queue
  block: remove an incorrect check from blk_rq_append_bio
  block: initialize ret in bdev_disk_changed
  block: Fix sys_ioprio_set(.which=IOPRIO_WHO_PGRP) task iteration
  block: remove disk_part_iter
  block: simplify diskstats_show
  block: simplify show_partition
  block: simplify printk_all_partitions
  block: simplify partition_overlaps
  block: simplify partition removal
  block: take bd_mutex around delete_partitions in del_gendisk
  block: refactor blk_drop_partitions
  block: move more syncing and invalidation to delete_partition
  ...
2021-04-28 14:27:12 -07:00
Bart Van Assche 7a3beeae28 scsi: target: tcm_fc: Fix a kernel-doc header
Fix the function name in the kernel-doc header above ft_prli().

Link: https://lore.kernel.org/r/20210415220826.29438-21-bvanassche@acm.org
Cc: Hannes Reinecke <hare@suse.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-15 22:44:41 -04:00
Bart Van Assche baa75afde8 scsi: target: Shorten ALUA error messages
Do not print tg_pt_gp->tg_pt_gp_valid_id if we already know that it is zero.

Link: https://lore.kernel.org/r/20210415220826.29438-20-bvanassche@acm.org
Cc: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-15 22:44:41 -04:00
Bart Van Assche e15c745295 scsi: target: Fix two format specifiers
Use format specifier '%u' to format the u32 data type instead of '%hu'.

Link: https://lore.kernel.org/r/20210415220826.29438-19-bvanassche@acm.org
Cc: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-15 22:44:41 -04:00
Bart Van Assche 15df85e0d6 scsi: target: Compare explicitly with SAM_STAT_GOOD
Instead of leaving it implicit that SAM_STAT_GOOD == 0, compare explicitly
with SAM_STAT_GOOD.

Link: https://lore.kernel.org/r/20210415220826.29438-18-bvanassche@acm.org
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-15 22:44:41 -04:00
Bodo Stroesser 08976cb548 scsi: target: tcmu: Make data_pages_per_blk changeable via configfs
Make data_pages_per_blk changeable similar to the way it is done for
max_data_area_mb. One can change the value by typing:

  echo "data_pages_per_blk=N" >control

The value is printed when doing:

  cat info

In addition, a new readonly attribute 'data_pages_per_blk' returns the
value on read.

Link: https://lore.kernel.org/r/20210324195758.2021-7-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-12 22:40:56 -04:00
Bodo Stroesser e719afdcf6 scsi: target: tcmu: Replace block size definitions with new udev members
Replace DATA_PAGES_PER_BLK and DATA_BLOCK_SIZE with new struct elements
tcmu_dev->data_pages_per_blk and tcmu_dev->data_blk_size.  These new
variables are still loaded with constant definition DATA_PAGES_PER_BLK_DEF
(= 1) and DATA_PAGES_PER_BLK_DEF * PAGE_SIZE.

There is no way yet to set the values via configfs.

Link: https://lore.kernel.org/r/20210324195758.2021-6-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-12 22:40:56 -04:00
Bodo Stroesser 3722e36c4e scsi: target: tcmu: Remove function tcmu_get_block_page()
There is only one caller of tcmu_get_block_page left. Since it is a
one-liner, we can remove the function.

Link: https://lore.kernel.org/r/20210324195758.2021-5-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-12 22:40:55 -04:00
Bodo Stroesser f5ce815f34 scsi: target: tcmu: Support DATA_BLOCK_SIZE = N * PAGE_SIZE
Change tcmu to support DATA_BLOCK_SIZE being a multiple of PAGE_SIZE. There
are two reasons why one would like to have a bigger DATA_BLOCK_SIZE:

 1) If userspace - e.g. due to data compression, encryption or
    deduplication - needs to have receive or transmit data in a consecutive
    buffer, we can define DATA_BLOCK_SIZE to the maximum size of a SCSI
    READ/WRITE to enforce that userspace sees just one consecutive
    buffer. That way we can avoid the need for doing data copy in
    userspace.

 2) Using a bigger data block size can speed up command processing in
    tcmu. The number of free data blocks to look up in bitmap is reduced
    substantially. The lookup for data pages in radix_tree can be done more
    efficiently if there are multiple pages in a data block. The maximum
    number of IOVs to set up is lower so cmd entries in the ring become
    smaller.

Link: https://lore.kernel.org/r/20210324195758.2021-4-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-12 22:40:55 -04:00
Bodo Stroesser 8b084d9dfb scsi: target: tcmu: Prepare for PAGE_SIZE != DATA_BLOCK_SIZE
Rename some variables and definitions as a first preparation for
DATA_BLOCK_SIZE != PAGE_SIZE and add the new DATA_PAGES_PER_BLK definition
containing the number of pages per data block.

Rename tcmu_try_get_block_page() to tcmu_try_get_data_page(). Keep name
tcmu_get_block_page() since it will go away in a following commit when
there is only one caller left.  Subsequent commits will then add full
support for DATA_PAGES_PER_BLK != 1, which also means DATA_BLOCK_SIZE =
DATA_PAGES_PER_BLK * PAGE_SIZE

Link: https://lore.kernel.org/r/20210324195758.2021-3-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-12 22:40:55 -04:00
Bodo Stroesser ecddbb7e94 scsi: target: tcmu: Adjust names of variables and definitions
Some definitions and members of struct tcmu_dev had misleading
names. Examples:

 - ring_size was used for the size of mailbox + cmd ring + data area

 - CMDR_SIZE was used for size of mailbox + cmd ring

I added the new definition MB_CMDR_SIZE (mailbox + command ring), changed
CMDR_SIZE to hold the size of the command ring only and replaced in struct
tcmu_dev the member ring_size with mmap_pages, because the member is now
used in tcmu_mmap() only, where we need page count, not size.

I also added the new struct tcmu_dev member 'cmdr' which is used to replace
some occurences of '(void *)mb + CMDR_OFF' with 'udev->cmdr' for better
readability.

Link: https://lore.kernel.org/r/20210324195758.2021-2-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-12 22:40:55 -04:00
Martin K. Petersen 84b20b8062 Merge branch '5.12/scsi-fixes' into 5.13/scsi-staging
Resolve a couple of conflicts between the 5.12 fixes branch and the
5.13 staging tree (iSCSI target and UFS).

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-12 21:41:54 -04:00
Christoph Hellwig 393bb12e00 block: stop calling blk_queue_bounce for passthrough requests
Instead of overloading the passthrough fast path with the deprecated
block layer bounce buffering let the users that combine an old
undermaintained driver with a highmem system pay the price by always
falling back to copies in that case.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20210331073001.46776-9-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-04-06 09:28:18 -06:00
Konstantin Shelekhin 1b5ad814af scsi: target: Make the virtual LUN 0 device
Create the device for the virtual LUN 0 using the DUMMY flag. This change
makes it possible to remove some special-casing in the INQUIRY code.

Link: https://lore.kernel.org/r/20210322200938.53300-3-k.shelekhin@yadro.com
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Konstantin Shelekhin <k.shelekhin@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-05 23:26:39 -04:00
Konstantin Shelekhin 0aecfa662e scsi: target: Add the DUMMY flag to rd_mcp
This commit adds the DUMMY flag to the rd_mcp backend that forces a logical
unit to report itself as not connected device of an unknown type.
Essentially this allows users to create devices identical to the device for
the virtual LUN 0, making it possible to explicitly create a LUN 0 device
and configure its WWNs (e.g. vendor or product name).

Link: https://lore.kernel.org/r/20210322200938.53300-2-k.shelekhin@yadro.com
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Konstantin Shelekhin <k.shelekhin@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-05 23:26:38 -04:00
Roman Bolshakov 0352c3d395 scsi: target: iscsi: Fix zero tag inside a trace event
target_sequencer_start event is triggered inside target_cmd_init_cdb().
se_cmd.tag is not initialized with ITT at the moment so the event always
prints zero tag.

Link: https://lore.kernel.org/r/20210403215415.95077-1-r.bolshakov@yadro.com
Cc: stable@vger.kernel.org # 5.10+
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-05 23:09:37 -04:00
Martin K. Petersen 556666bce1 Merge branch '5.12/scsi-fixes' into 5.13/scsi-staging
Pull 5.12/scsi-fixes into the 5.13 SCSI tree to provide a baseline for
some UFS changes that would otherwise cause conflicts during the
merge.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-05 22:57:29 -04:00
Martin Wilck 36fa766faa scsi: target: pscsi: Clean up after failure in pscsi_map_sg()
If pscsi_map_sg() fails, make sure to drop references to already allocated
bios.

Link: https://lore.kernel.org/r/20210323212431.15306-2-mwilck@suse.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-03-24 23:19:23 -04:00
Martin Wilck 077ce028b8 scsi: target: pscsi: Avoid OOM in pscsi_map_sg()
pscsi_map_sg() uses the variable nr_pages as a hint for bio_kmalloc() how
many vector elements to allocate. If nr_pages is < BIO_MAX_PAGES, it will
be reset to 0 after successful allocation of the bio.

If bio_add_pc_page() fails later for whatever reason, pscsi_map_sg() tries
to allocate another bio, passing nr_vecs = 0. This causes bio_add_pc_page()
to fail immediately in the next call. pci_map_sg() continues to allocate
zero-length bios until memory is exhausted and the kernel crashes with
OOM. This can be easily observed by exporting a SATA DVD drive via pscsi.
The target crashes as soon as the client tries to access the DVD LUN. In
the case I analyzed, bio_add_pc_page() would fail because the DVD device's
max_sectors_kb (128) was exceeded.

Avoid this by simply not resetting nr_pages to 0 after allocating the
bio. This way, the client receives an I/O error when it tries to send
requests exceeding the devices max_sectors_kb, and eventually gets it
right. The client must still limit max_sectors_kb e.g. by an udev rule if
(like in my case) the driver doesn't report valid block limits, otherwise
it encounters I/O errors.

Link: https://lore.kernel.org/r/20210323212431.15306-1-mwilck@suse.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-03-24 23:19:23 -04:00
Mike Christie b1ebd3b0e4 scsi: target: Fix htmldocs warning in target_submit_prep()
Fix warning:

drivers/target/target_core_transport.c:1661: WARNING: Block quote ends
without a blank line; unexpected unindent.

Link: https://lore.kernel.org/r/20210318225858.11863-1-michael.christie@oracle.com
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-03-18 22:37:58 -04:00
Bodo Stroesser 471ee95ccc scsi: target: tcmu: Adjust parameter in call to tcmu_blocks_release()
In commit f7c89771d0 ("scsi: target: tcmu: Replace radix_tree with
XArray") the meaning of last parameter of tcmu_blocks_release() was
changed.  So in the callers we should subtract 1 from the previous
parameter.

Unfortunately that change got lost at one of the two places where
tcmu_blocks_release() is called. That does not lead to any problems, but we
should adjust it anyway.

Link: https://lore.kernel.org/r/20210310184458.10741-1-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-03-15 23:18:37 -04:00
Chaitanya Kulkarni 4524a0b159 scsi: target: core: file: Don't duplicate memset(0xff)
The function fd_do_prot_fill() is called from two callers
fd_do_prot_unmap() and fd_format_prot(). Both callers initialize the passed
buffer to 0xff with memset().

Move the memset() call to fd_do_prot_fill() to avoid duplication.

Link: https://lore.kernel.org/r/20210228055645.22253-24-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-03-09 23:47:18 -05:00
Chaitanya Kulkarni 4db6dfe62c scsi: target: core: pr: Initialize arrays at declaration time
Avoids calling memset().

Link: https://lore.kernel.org/r/20210228055645.22253-21-chaitanya.kulkarni@wdc.com
Link: https://lore.kernel.org/r/20210228055645.22253-22-chaitanya.kulkarni@wdc.com
Link: https://lore.kernel.org/r/20210228055645.22253-23-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-03-09 23:47:18 -05:00
Chaitanya Kulkarni 2d4e2daf4f scsi: target: configfs: Initialize arrays at declaration time
Avoids calling memset().

Link: https://lore.kernel.org/r/20210228055645.22253-14-chaitanya.kulkarni@wdc.com
Link: https://lore.kernel.org/r/20210228055645.22253-15-chaitanya.kulkarni@wdc.com
Link: https://lore.kernel.org/r/20210228055645.22253-16-chaitanya.kulkarni@wdc.com
Link: https://lore.kernel.org/r/20210228055645.22253-17-chaitanya.kulkarni@wdc.com
Link: https://lore.kernel.org/r/20210228055645.22253-18-chaitanya.kulkarni@wdc.com
Link: https://lore.kernel.org/r/20210228055645.22253-19-chaitanya.kulkarni@wdc.com
Link: https://lore.kernel.org/r/20210228055645.22253-20-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-03-09 23:47:18 -05:00
Chaitanya Kulkarni c22659fbb9 scsi: target: iscsi: Initialize arrays at declaration time
Avoids calling memset().

Link: https://lore.kernel.org/r/20210228055645.22253-13-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-03-09 23:47:18 -05:00
Chaitanya Kulkarni c4d81e7c53 scsi: target: iscsi: Remove unused macro PRINT_BUF
Remove unused macro to fix the following compilation warning:

drivers/target//iscsi/iscsi_target_util.c:31: warning: macro "PRINT_BUFF" is not used [-Wunused-macros]
	#define PRINT_BUFF(buff, len)     \

Link: https://lore.kernel.org/r/20210228055645.22253-12-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-03-09 23:47:18 -05:00