linux.git/drivers/target/target_core_file.c, branch v6.0

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

2022-08-05T02:47:37+00:00

Pull SCSI updates from James Bottomley:
 "Updates to the usual drivers (ufs, qla2xx, target, lpfc, smartpqi,
  mpi3mr).

  The main driver change that might cause issues on down the road is the
  conversion of some of our oldest surviving drivers to the DMA API
  (should only affect m68k).

  The only major core change is the rework of async resume; the rest are
  either completely trivial or for updating deprecated APIs"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (195 commits)
  scsi: target: Remove XDWRITEREAD emulated support
  scsi: megaraid: Remove the static variable initialisation
  scsi: ch: Do not initialise statics to 0
  scsi: ufs: core: Fix spelling mistake "Cannnot" -> "Cannot"
  scsi: target: iscsi: Do not require target authentication
  scsi: target: iscsi: Allow AuthMethod=None
  scsi: target: iscsi: Support base64 in CHAP
  scsi: target: iscsi: Add support for extended CDB AHS
  scsi: ufs: dt-bindings: Add SC8280XP binding
  scsi: target: iscsi: Fix clang -Wformat warnings
  scsi: ufs: core: Read device property for ref clock
  scsi: libsas: Resume SAS host for phy reset or enable via sysfs
  scsi: hisi_sas: Modify v3 HW SATA completion error processing
  scsi: hisi_sas: Relocate DMA unmap of SMP task
  scsi: hisi_sas: Remove unnecessary variable to hold DMA map elements
  scsi: hisi_sas: Call hisi_sas_slave_configure() from slave_configure_v3_hw()
  scsi: mpi3mr: Delete a stray tab
  scsi: mpi3mr: Unlock on error path
  scsi: mpi3mr: Reduce VD queue depth on detecting throttling
  scsi: mpi3mr: Resource Based Metering
  ...

scsi: target: Add file configure_unmap callout

2022-07-07T20:53:52+00:00

Move file's UNMAP setup code to a configure_unmap callout.

Link: https://lore.kernel.org/r/20220628200230.15052-5-michael.christie@oracle.com
Reviewed-by: Christoph Hellwig 
Signed-off-by: Mike Christie 
Signed-off-by: Martin K. Petersen

scsi: target: Remove incorrect zero blocks WRITE_SAME check

2022-07-07T20:53:52+00:00

We use WSNZ=1 so if we get a WRITE_SAME with zero logical blocks we are
supposed to fail it. We do this check and failure in target_core_sbc.c
before calling into the backend, so we can remove the incorrect check in
target_core_file.

Link: https://lore.kernel.org/r/20220628200230.15052-2-michael.christie@oracle.com
Reviewed-by: Christoph Hellwig 
Signed-off-by: Mike Christie 
Signed-off-by: Martin K. Petersen

scsi: target: Fix WRITE_SAME No Data Buffer crash

2022-07-07T20:38:14+00:00

In newer version of the SBC specs, we have a NDOB bit that indicates there
is no data buffer that gets written out. If this bit is set using commands
like "sg_write_same --ndob" we will crash in target_core_iblock/file's
execute_write_same handlers when we go to access the se_cmd->t_data_sg
because its NULL.

This patch adds a check for the NDOB bit in the common WRITE SAME code
because we don't support it. And, it adds a check for zero SG elements in
each handler in case the initiator tries to send a normal WRITE SAME with
no data buffer.

Link: https://lore.kernel.org/r/20220628022325.14627-2-michael.christie@oracle.com
Reviewed-by: Christoph Hellwig 
Signed-off-by: Mike Christie 
Signed-off-by: Martin K. Petersen

block: decouple REQ_OP_SECURE_ERASE from REQ_OP_DISCARD

2022-04-18T01:49:59+00:00

Secure erase is a very different operation from discard in that it is
a data integrity operation vs hint.  Fully split the limits and helper
infrastructure to make the separation more clear.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Martin K. Petersen 
Acked-by: Christoph Böhmwalder  [drbd]
Acked-by: Ryusuke Konishi  [nifs2]
Acked-by: Jaegeuk Kim  [f2fs]
Acked-by: Coly Li  [bcache]
Acked-by: David Sterba  [btrfs]
Acked-by: Chao Yu 
Reviewed-by: Chaitanya Kulkarni 
Link: https://lore.kernel.org/r/20220415045258.199825-27-hch@lst.de
Signed-off-by: Jens Axboe

block: add a bdev_nonrot helper

2022-04-18T01:49:59+00:00

Add a helper to check the nonrot flag based on the block_device instead
of having to poke into the block layer internal request_queue.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Martin K. Petersen 
Acked-by: David Sterba  [btrfs]
Reviewed-by: Chaitanya Kulkarni 
Link: https://lore.kernel.org/r/20220415045258.199825-12-hch@lst.de
Signed-off-by: Jens Axboe

target: pass a block_device to target_configure_unmap_from_queue

2022-04-18T01:49:58+00:00

The SCSI target drivers is a consumer of the block layer and shoul
d generally work on struct block_device.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Martin K. Petersen 
Reviewed-by: Chaitanya Kulkarni 
Link: https://lore.kernel.org/r/20220415045258.199825-3-hch@lst.de
Signed-off-by: Jens Axboe

fs: get rid of the res2 iocb->ki_complete argument

2021-10-25T16:36:24+00:00

The second argument was only used by the USB gadget code, yet everyone
pays the overhead of passing a zero to be passed into aio, where it
ends up being part of the aio res2 value.

Now that everybody is passing in zero, kill off the extra argument.

Reviewed-by: Darrick J. Wong 
Signed-off-by: Jens Axboe

block: move struct request to blk-mq.h

2021-10-18T12:17:02+00:00

struct request is only used by blk-mq drivers, so move it and all
related declarations to blk-mq.h.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Johannes Thumshirn 
Link: https://lore.kernel.org/r/20210920123328.1399408-18-hch@lst.de
Signed-off-by: Jens Axboe

scsi: target: core: file: Don't duplicate memset(0xff)

2021-03-10T04:47:18+00:00

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 
Reviewed-by: Johannes Thumshirn 
Signed-off-by: Chaitanya Kulkarni 
Signed-off-by: Martin K. Petersen