linux-toradex.git/include/scsi/scsi_host.h, branch v4.9.37

scsi: Avoid that toggling use_blk_mq triggers a memory leak

2016-09-27T00:58:42+00:00

This patch avoids that the following memory leak is triggered if
use_blk_mq is disabled after a SCSI host has been allocated by the
ib_srp driver and before the same SCSI host is freed:

unreferenced object 0xffff8803a168c568 (size 256):
  backtrace:
    [] kmemleak_alloc+0x45/0xa0
    [] __kmalloc_node+0x1e4/0x400
    [] blk_mq_alloc_tag_set+0xb4/0x230
    [] scsi_mq_setup_tags+0xc7/0xd0
    [] scsi_add_host_with_dma+0x216/0x2d0
    [] srp_create_target+0xe55/0x13d0 [ib_srp]
    [] dev_attr_store+0x13/0x20
    [] sysfs_kf_write+0x40/0x50
    [] kernfs_fop_write+0x137/0x1c0
    [] __vfs_write+0x23/0x140
    [] vfs_write+0xb0/0x190
    [] SyS_write+0x44/0xa0
    [] entry_SYSCALL_64_fastpath+0x18/0xa8

Fixes: 9aa9cc4221f5 ("scsi: remove the disable_blk_mq host flag")
Signed-off-by: Bart Van Assche 
Cc: Christoph Hellwig 
Cc: Martin K. Petersen 
Cc: 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Martin K. Petersen

scsi: remove the disable_blk_mq host flag

2016-07-15T19:11:20+00:00

We've had scsi-mq for 2.5 years now, so we can remove the unused flag to
disable the code on a per-host basis that was put in for unexpected
emergencies during bringup.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Bart Van Assche 
Signed-off-by: Martin K. Petersen

scsi: rename SCSI_MAX_{SG, SG_CHAIN}_SEGMENTS

2016-04-15T20:53:14+00:00

Rename SCSI_MAX_SG_SEGMENTS to SG_CHUNK_SIZE, which means the amount
we fit into a single scatterlist chunk.

Rename SCSI_MAX_SG_CHAIN_SEGMENTS to SG_MAX_SEGMENTS.

Will move these 2 generic definitions to scatterlist.h later.

Reviewed-by: Christoph Hellwig 
Acked-by: Bart Van Assche  (for ib_srp changes)
Signed-off-by: Ming Lin 
Acked-by: Tejun Heo 
Reviewed-by: Sagi Grimberg 
Signed-off-by: Martin K. Petersen

Merge branch 'mkp-fixes' into fixes

2015-12-03T17:32:33+00:00

scsi: report 'INQUIRY result too short' once per host

2015-11-19T17:12:16+00:00

Some host adapters (e.g. Hyper-V storvsc) are known for not respecting
the SPC-2/3/4 requirement for 'INQUIRY data (see table ...) shall
contain at least 36 bytes'. As a result we get tons on 'scsi 0:7:1:1:
scsi scan: INQUIRY result too short (5), using 36' messages on
console. This can be problematic for slow consoles. Introduce
short_inquiry flag in struct Scsi_Host to print the message once per
host.

Signed-off-by: Vitaly Kuznetsov 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Hannes Reinecke 
Signed-off-by: Martin K. Petersen

scsi: use host wide tags by default

2015-11-10T01:11:57+00:00

This patch changes the !blk-mq path to the same defaults as the blk-mq
I/O path by always enabling block tagging, and always using host wide
tags.  We've had blk-mq available for a few releases so bugs with
this mode should have been ironed out, and this ensures we get better
coverage of over tagging setup over different configs.

Signed-off-by: Christoph Hellwig 
Acked-by: Jens Axboe 
Reviewed-by: Hannes Reinecke 
Signed-off-by: James Bottomley

block: support different tag allocation policy

2015-01-23T21:15:46+00:00

The libata tag allocation is using a round-robin policy. Next patch will
make libata use block generic tag allocation, so let's add a policy to
tag allocation.

Currently two policies: FIFO (default) and round-robin.

Cc: Jens Axboe 
Cc: Tejun Heo 
Cc: Christoph Hellwig 
Signed-off-by: Shaohua Li 
Signed-off-by: Jens Axboe

Merge remote-tracking branch 'scsi-queue/drivers-for-3.19' into for-linus

2014-12-18T13:56:29+00:00

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2014-12-12T18:08:06+00:00

Pull trivial tree update from Jiri Kosina:
 "Usual stuff: documentation updates, printk() fixes, etc"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (24 commits)
  intel_ips: fix a type in error message
  cpufreq: cpufreq-dt: Move newline to end of error message
  ps3rom: fix error return code
  treewide: fix typo in printk and Kconfig
  ARM: dts: bcm63138: change "interupts" to "interrupts"
  Replace mentions of "list_struct" to "list_head"
  kernel: trace: fix printk message
  scsi: mpt2sas: fix ioctl in comment
  zbud, zswap: change module author email
  clocksource: Fix 'clcoksource' typo in comment
  arm: fix wording of "Crotex" in CONFIG_ARCH_EXYNOS3 help
  gpio: msm-v1: make boolean argument more obvious
  usb: Fix typo in usb-serial-simple.c
  PCI: Fix comment typo 'COMFIG_PM_OPS'
  powerpc: Fix comment typo 'CONIFG_8xx'
  powerpc: Fix comment typos 'CONFiG_ALTIVEC'
  clk: st: Spelling s/stucture/structure/
  isci: Spelling s/stucture/structure/
  usb: gadget: zero: Spelling s/infrastucture/infrastructure/
  treewide: Fix company name in module descriptions
  ...

scsi: remove ->change_queue_type method

2014-12-04T08:55:45+00:00

Since we got rid of ordered tag support in 2010 the prime use case of
switching on and off ordered tags has been obsolete.  The other function
of enabling/disabling tagging entirely has only been correctly implemented
by the 53c700 driver and isn't generally useful.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Bart Van Assche 
Reviewed-by: Martin K. Petersen