12 Nov, 2015

2 commits

  • SCSI queue for 4.4.

    Signed-off-by: Martin K. Petersen

    James Bottomley
     
  • Replace the use of struct timeval and do_gettimeofday() with
    64 bit ktime_get_real_seconds. Prevents 32-bit type overflow
    in year 2038 on 32-bit systems.

    Driver was using the seconds portion of struct timeval (.tv_secs)
    to pass a millseconds timestamp to the firmware. This change maintains
    that same behavior using ktime_get_real_seconds.

    The structure used to pass the timestamp to firmware is 48 bits and
    works fine as long as the top 16 bits are zero and they will be zero
    for a long time..ie. thousands of years.

    Alternative Change: Add sub second granularity to timestamp

    As noted above, the driver only used the seconds portion of timeval,
    ignores the microseconds portion, and by multiplying by 1000 effectively
    does a <
    Reviewed-by: Arnd Bergmann
    Signed-off-by: Martin K. Petersen

    Alison Schofield
     

10 Nov, 2015

1 commit

  • 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

    Christoph Hellwig
     

11 Feb, 2015

2 commits

  • Pull networking updates from David Miller:

    1) More iov_iter conversion work from Al Viro.

    [ The "crypto: switch af_alg_make_sg() to iov_iter" commit was
    wrong, and this pull actually adds an extra commit on top of the
    branch I'm pulling to fix that up, so that the pre-merge state is
    ok. - Linus ]

    2) Various optimizations to the ipv4 forwarding information base trie
    lookup implementation. From Alexander Duyck.

    3) Remove sock_iocb altogether, from CHristoph Hellwig.

    4) Allow congestion control algorithm selection via routing metrics.
    From Daniel Borkmann.

    5) Make ipv4 uncached route list per-cpu, from Eric Dumazet.

    6) Handle rfs hash collisions more gracefully, also from Eric Dumazet.

    7) Add xmit_more support to r8169, e1000, and e1000e drivers. From
    Florian Westphal.

    8) Transparent Ethernet Bridging support for GRO, from Jesse Gross.

    9) Add BPF packet actions to packet scheduler, from Jiri Pirko.

    10) Add support for uniqu flow IDs to openvswitch, from Joe Stringer.

    11) New NetCP ethernet driver, from Muralidharan Karicheri and Wingman
    Kwok.

    12) More sanely handle out-of-window dupacks, which can result in
    serious ACK storms. From Neal Cardwell.

    13) Various rhashtable bug fixes and enhancements, from Herbert Xu,
    Patrick McHardy, and Thomas Graf.

    14) Support xmit_more in be2net, from Sathya Perla.

    15) Group Policy extensions for vxlan, from Thomas Graf.

    16) Remove Checksum Offload support for vxlan, from Tom Herbert.

    17) Like ipv4, support lockless transmit over ipv6 UDP sockets. From
    Vlad Yasevich.

    * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1494+1 commits)
    crypto: fix af_alg_make_sg() conversion to iov_iter
    ipv4: Namespecify TCP PMTU mechanism
    i40e: Fix for stats init function call in Rx setup
    tcp: don't include Fast Open option in SYN-ACK on pure SYN-data
    openvswitch: Only set TUNNEL_VXLAN_OPT if VXLAN-GBP metadata is set
    ipv6: Make __ipv6_select_ident static
    ipv6: Fix fragment id assignment on LE arches.
    bridge: Fix inability to add non-vlan fdb entry
    net: Mellanox: Delete unnecessary checks before the function call "vunmap"
    cxgb4: Add support in cxgb4 to get expansion rom version via ethtool
    ethtool: rename reserved1 memeber in ethtool_drvinfo for expansion ROM version
    net: dsa: Remove redundant phy_attach()
    IB/mlx4: Reset flow support for IB kernel ULPs
    IB/mlx4: Always use the correct port for mirrored multicast attachments
    net/bonding: Fix potential bad memory access during bonding events
    tipc: remove tipc_snprintf
    tipc: nl compat add noop and remove legacy nl framework
    tipc: convert legacy nl stats show to nl compat
    tipc: convert legacy nl net id get to nl compat
    tipc: convert legacy nl net id set to nl compat
    ...

    Linus Torvalds
     
  • Pull trivial tree changes from Jiri Kosina:
    "Patches from trivial.git that keep the world turning around.

    Mostly documentation and comment fixes, and a two corner-case code
    fixes from Alan Cox"

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial:
    kexec, Kconfig: spell "architecture" properly
    mm: fix cleancache debugfs directory path
    blackfin: mach-common: ints-priority: remove unused function
    doubletalk: probe failure causes OOPS
    ARM: cache-l2x0.c: Make it clear that cache-l2x0 handles L310 cache controller
    msdos_fs.h: fix 'fields' in comment
    scsi: aic7xxx: fix comment
    ARM: l2c: fix comment
    ibmraid: fix writeable attribute with no store method
    dynamic_debug: fix comment
    doc: usbmon: fix spelling s/unpriviledged/unprivileged/
    x86: init_mem_mapping(): use capital BIOS in comment

    Linus Torvalds
     

20 Jan, 2015

1 commit

  • https://bugzilla.kernel.org/show_bug.cgi?id=81311

    [ 0.603157] WARNING: at drivers/base/core.c:601
    device_create_file+0x8d/0xa0()
    [ 0.603158] Attribute adapter_id: write permission without 'store'
    [ 0.603159] Modules linked in: i915(+) i2c_algo_bit drm_kms_helper drm
    mpt2sas(+) pmcraid(+) raid_class scsi_transport_sas i2c_core video

    Signed-off-by: Alan Cox
    Signed-off-by: Jiri Kosina

    Alan
     

18 Jan, 2015

1 commit

  • Contrary to common expectations for an "int" return, these functions
    return only a positive value -- if used correctly they cannot even
    return 0 because the message header will necessarily be in the skb.

    This makes the very common pattern of

    if (genlmsg_end(...) < 0) { ... }

    be a whole bunch of dead code. Many places also simply do

    return nlmsg_end(...);

    and the caller is expected to deal with it.

    This also commonly (at least for me) causes errors, because it is very
    common to write

    if (my_function(...))
    /* error condition */

    and if my_function() does "return nlmsg_end()" this is of course wrong.

    Additionally, there's not a single place in the kernel that actually
    needs the message length returned, and if anyone needs it later then
    it'll be very easy to just use skb->len there.

    Remove this, and make the functions void. This removes a bunch of dead
    code as described above. The patch adds lines because I did

    - return nlmsg_end(...);
    + nlmsg_end(...);
    + return 0;

    I could have preserved all the function's return values by returning
    skb->len, but instead I've audited all the places calling the affected
    functions and found that none cared. A few places actually compared
    the return value with < 0 with no change in behaviour, so I opted for the more
    efficient version.

    One instance of the error I've made numerous times now is also present
    in net/phonet/pn_netlink.c in the route_dumpit() function - it didn't
    check for
    Signed-off-by: David S. Miller

    Johannes Berg
     

04 Dec, 2014

1 commit

  • 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

    Christoph Hellwig
     

24 Nov, 2014

1 commit

  • Drop the now unused reason argument from the ->change_queue_depth method.
    Also add a return value to scsi_adjust_queue_depth, and rename it to
    scsi_change_queue_depth now that it can be used as the default
    ->change_queue_depth implementation.

    Signed-off-by: Christoph Hellwig
    Reviewed-by: Mike Christie
    Reviewed-by: Hannes Reinecke

    Christoph Hellwig
     

12 Nov, 2014

4 commits

  • Remove the tagged argument from scsi_adjust_queue_depth, and just let it
    handle the queue depth. For most drivers those two are fairly separate,
    given that most modern drivers don't care about the SCSI "tagged" status
    of a command at all, and many old drivers allow queuing of multiple
    untagged commands in the driver.

    Instead we start out with the ->simple_tags flag set before calling
    ->slave_configure, which is how all drivers actually looking at
    ->simple_tags except for one worke anyway. The one other case looks
    broken, but I've kept the behavior as-is for now.

    Except for that we only change ->simple_tags from the ->change_queue_type,
    and when rejecting a tag message in a single driver, so keeping this
    churn out of scsi_adjust_queue_depth is a clear win.

    Now that the usage of scsi_adjust_queue_depth is more obvious we can
    also remove all the trivial instances in ->slave_alloc or ->slave_configure
    that just set it to the cmd_per_lun default.

    Signed-off-by: Christoph Hellwig
    Reviewed-by: Mike Christie
    Reviewed-by: Hannes Reinecke
    Reviewed-by: Martin K. Petersen

    Christoph Hellwig
     
  • Allow a driver to ask for block layer tags by setting .use_blk_tags in the
    host template, in which case it will always see a valid value in
    request->tag, similar to the behavior when using blk-mq. This means even
    SCSI "untagged" commands will now have a tag, which is especially useful
    when using a host-wide tag map.

    Signed-off-by: Christoph Hellwig
    Reviewed-by: Mike Christie
    Reviewed-by: Martin K. Petersen
    Reviewed-by: Hannes Reinecke

    Christoph Hellwig
     
  • Unless we want to build a SPI tag message we should just check SCMD_TAGGED
    instead of reverse engineering a tag type through the use of
    scsi_populate_tag_msg.

    Also rename the function to spi_populate_tag_msg, make it behave like the
    other spi message helpers, and move it to the spi transport class.

    Signed-off-by: Christoph Hellwig
    Reviewed-by: Mike Christie
    Reviewed-by: Hannes Reinecke

    Christoph Hellwig
     
  • Most drivers use exactly the same implementation, so provide it as a
    library function.

    Signed-off-by: Christoph Hellwig
    Reviewed-by: Bart Van Assche
    Reviewed-by: Mike Christie
    Reviewed-by: Martin K. Petersen
    Reviewed-by: Hannes Reinecke

    Christoph Hellwig
     

17 Sep, 2014

2 commits


09 Aug, 2014

1 commit


18 Jul, 2014

1 commit

  • The SCSI standard defines 64-bit values for LUNs, and large arrays
    employing large or hierarchical LUN numbers become more and more
    common.

    So update the linux SCSI stack to use 64-bit LUN numbers.

    Signed-off-by: Hannes Reinecke
    Reviewed-by: Christoph Hellwig
    Reviewed-by: Ewan Milne
    Signed-off-by: Christoph Hellwig

    Hannes Reinecke
     

07 Dec, 2013

1 commit

  • Pull SCSI fixes from James Bottomley:
    "This is a set of nine fixes (and one author update).

    The libsas one should fix discovery in eSATA devices, the WRITE_SAME
    one is the largest, but it should fix a lot of problems we've been
    getting with the emulated RAID devices (they've been effectively lying
    about support and then firmware has been choking on the commands).

    The rest are various crash, hang or warn driver fixes"

    * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
    [SCSI] bfa: Fix crash when symb name set for offline vport
    [SCSI] enclosure: fix WARN_ON in dual path device removing
    [SCSI] pm80xx: Tasklets synchronization fix.
    [SCSI] pm80xx: Resetting the phy state.
    [SCSI] pm80xx: Fix for direct attached device.
    [SCSI] pm80xx: Module author addition
    [SCSI] hpsa: return 0 from driver probe function on success, not 1
    [SCSI] hpsa: do not discard scsi status on aborted commands
    [SCSI] Disable WRITE SAME for RAID and virtual host adapter drivers
    [SCSI] libsas: fix usage of ata_tf_to_fis

    Linus Torvalds
     

29 Nov, 2013

2 commits

  • Some host adapters do not pass commands through to the target disk
    directly. Instead they provide an emulated target which may or may not
    accurately report its capabilities. In some cases the physical device
    characteristics are reported even when the host adapter is processing
    commands on the device's behalf. This can lead to adapter firmware hangs
    or excessive I/O errors.

    This patch disables WRITE SAME for devices connected to host adapters
    that provide an emulated target. Driver writers can disable WRITE SAME
    by setting the no_write_same flag in the host adapter template.

    [jejb: fix up rejections due to eh_deadline patch]
    Signed-off-by: Martin K. Petersen
    Cc: stable@kernel.org
    Signed-off-by: James Bottomley

    Martin K. Petersen
     
  • The pmcraid driver is abusing the genetlink API and is using its
    family ID as the multicast group ID, which is invalid and may
    belong to somebody else (and likely will.)

    Make it use the correct API, but since this may already be used
    as-is by userspace, reserve a family ID for this code and also
    reserve that group ID to not break userspace assumptions.

    My previous patch broke event delivery in the driver as I missed
    that it wasn't using the right API and forgot to update it later
    in my series.

    While changing this, I noticed that the genetlink code could use
    the static group ID instead of a strcmp(), so also do that for
    the VFS_DQUOT family.

    Cc: Anil Ravindranath
    Cc: "James E.J. Bottomley"
    Signed-off-by: Johannes Berg
    Signed-off-by: David S. Miller

    Johannes Berg
     

20 Nov, 2013

2 commits

  • Pull networking fixes from David Miller:
    "Mostly these are fixes for fallout due to merge window changes, as
    well as cures for problems that have been with us for a much longer
    period of time"

    1) Johannes Berg noticed two major deficiencies in our genetlink
    registration. Some genetlink protocols we passing in constant
    counts for their ops array rather than something like
    ARRAY_SIZE(ops) or similar. Also, some genetlink protocols were
    using fixed IDs for their multicast groups.

    We have to retain these fixed IDs to keep existing userland tools
    working, but reserve them so that other multicast groups used by
    other protocols can not possibly conflict.

    In dealing with these two problems, we actually now use less state
    management for genetlink operations and multicast groups.

    2) When configuring interface hardware timestamping, fix several
    drivers that simply do not validate that the hwtstamp_config value
    is one the driver actually supports. From Ben Hutchings.

    3) Invalid memory references in mwifiex driver, from Amitkumar Karwar.

    4) In dev_forward_skb(), set the skb->protocol in the right order
    relative to skb_scrub_packet(). From Alexei Starovoitov.

    5) Bridge erroneously fails to use the proper wrapper functions to make
    calls to netdev_ops->ndo_vlan_rx_{add,kill}_vid. Fix from Toshiaki
    Makita.

    6) When detaching a bridge port, make sure to flush all VLAN IDs to
    prevent them from leaking, also from Toshiaki Makita.

    7) Put in a compromise for TCP Small Queues so that deep queued devices
    that delay TX reclaim non-trivially don't have such a performance
    decrease. One particularly problematic area is 802.11 AMPDU in
    wireless. From Eric Dumazet.

    8) Fix crashes in tcp_fastopen_cache_get(), we can see NULL socket dsts
    here. Fix from Eric Dumzaet, reported by Dave Jones.

    9) Fix use after free in ipv6 SIT driver, from Willem de Bruijn.

    10) When computing mergeable buffer sizes, virtio-net fails to take the
    virtio-net header into account. From Michael Dalton.

    11) Fix seqlock deadlock in ip4_datagram_connect() wrt. statistic
    bumping, this one has been with us for a while. From Eric Dumazet.

    12) Fix NULL deref in the new TIPC fragmentation handling, from Erik
    Hugne.

    13) 6lowpan bit used for traffic classification was wrong, from Jukka
    Rissanen.

    14) macvlan has the same issue as normal vlans did wrt. propagating LRO
    disabling down to the real device, fix it the same way. From Michal
    Kubecek.

    15) CPSW driver needs to soft reset all slaves during suspend, from
    Daniel Mack.

    16) Fix small frame pacing in FQ packet scheduler, from Eric Dumazet.

    17) The xen-netfront RX buffer refill timer isn't properly scheduled on
    partial RX allocation success, from Ma JieYue.

    18) When ipv6 ping protocol support was added, the AF_INET6 protocol
    initialization cleanup path on failure was borked a little. Fix
    from Vlad Yasevich.

    19) If a socket disconnects during a read/recvmsg/recvfrom/etc that
    blocks we can do the wrong thing with the msg_name we write back to
    userspace. From Hannes Frederic Sowa. There is another fix in the
    works from Hannes which will prevent future problems of this nature.

    20) Fix route leak in VTI tunnel transmit, from Fan Du.

    * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (106 commits)
    genetlink: make multicast groups const, prevent abuse
    genetlink: pass family to functions using groups
    genetlink: add and use genl_set_err()
    genetlink: remove family pointer from genl_multicast_group
    genetlink: remove genl_unregister_mc_group()
    hsr: don't call genl_unregister_mc_group()
    quota/genetlink: use proper genetlink multicast APIs
    drop_monitor/genetlink: use proper genetlink multicast APIs
    genetlink: only pass array to genl_register_family_with_ops()
    tcp: don't update snd_nxt, when a socket is switched from repair mode
    atm: idt77252: fix dev refcnt leak
    xfrm: Release dst if this dst is improper for vti tunnel
    netlink: fix documentation typo in netlink_set_err()
    be2net: Delete secondary unicast MAC addresses during be_close
    be2net: Fix unconditional enabling of Rx interface options
    net, virtio_net: replace the magic value
    ping: prevent NULL pointer dereference on write to msg_name
    bnx2x: Prevent "timeout waiting for state X"
    bnx2x: prevent CFC attention
    bnx2x: Prevent panic during DMAE timeout
    ...

    Linus Torvalds
     
  • This doesn't really change anything, but prepares for the
    next patch that will change the APIs to pass the group ID
    within the family, rather than the global group ID.

    Signed-off-by: Johannes Berg
    Signed-off-by: David S. Miller

    Johannes Berg
     

14 Oct, 2013

1 commit

  • Since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
    (device-core: Ensure drvdata = NULL when no driver is bound),
    the driver core clears the driver data to NULL after device_release
    or on probe failure. Thus, it is not needed to manually clear the
    device driver data to NULL.

    Signed-off-by: Jingoo Han
    Cc: James Bottomley
    Signed-off-by: Jiri Kosina

    Jingoo Han
     

18 Jun, 2013

1 commit


30 Apr, 2013

1 commit


04 Jan, 2013

1 commit

  • CONFIG_HOTPLUG is going away as an option. As a result, the __dev*
    markings need to be removed.

    This change removes the use of __devinit, __devexit_p, __devinitdata,
    __devinitconst, and __devexit from these drivers.

    Based on patches originally written by Bill Pemberton, but redone by me
    in order to handle some of the coding style issues better, by hand.

    Cc: Bill Pemberton
    Cc: Adam Radford
    Cc: "James E.J. Bottomley"
    Signed-off-by: Greg Kroah-Hartman

    Greg Kroah-Hartman
     

21 Aug, 2012

1 commit

  • flush[_delayed]_work_sync() are now spurious. Mark them deprecated
    and convert all users to flush[_delayed]_work().

    If you're cc'd and wondering what's going on: Now all workqueues are
    non-reentrant and the regular flushes guarantee that the work item is
    not pending or running on any CPU on return, so there's no reason to
    use the sync flushes at all and they're going away.

    This patch doesn't make any functional difference.

    Signed-off-by: Tejun Heo
    Cc: Russell King
    Cc: Paul Mundt
    Cc: Ian Campbell
    Cc: Jens Axboe
    Cc: Mattia Dongili
    Cc: Kent Yoder
    Cc: David Airlie
    Cc: Jiri Kosina
    Cc: Karsten Keil
    Cc: Bryan Wu
    Cc: Benjamin Herrenschmidt
    Cc: Alasdair Kergon
    Cc: Mauro Carvalho Chehab
    Cc: Florian Tobias Schandinat
    Cc: David Woodhouse
    Cc: "David S. Miller"
    Cc: linux-wireless@vger.kernel.org
    Cc: Anton Vorontsov
    Cc: Sangbeom Kim
    Cc: "James E.J. Bottomley"
    Cc: Greg Kroah-Hartman
    Cc: Eric Van Hensbergen
    Cc: Takashi Iwai
    Cc: Steven Whitehouse
    Cc: Petr Vandrovec
    Cc: Mark Fasheh
    Cc: Christoph Hellwig
    Cc: Avi Kivity

    Tejun Heo
     

15 Dec, 2011

1 commit

  • There's a mistake in one of the pmcraid_err() calls in
    drivers/scsi/pmcraid.c - 'failed' is misspelled as 'faile'. This patch
    fixes that error.

    PS. This patch is generated on top of my previous one "[PATCH] SCSI,
    pmcraid: Fix kmalloc() argument order in pmcraid_chr_ioctl()".

    Signed-off-by: Jesper Juhl
    Signed-off-by: Jiri Kosina

    Jesper Juhl
     

30 Oct, 2011

1 commit


15 Sep, 2011

2 commits


27 Jul, 2011

1 commit

  • There's a code path in pmcraid that can be reached via device ioctl that
    causes all sorts of ugliness, including heap corruption or triggering the
    OOM killer due to consecutive allocation of large numbers of pages.

    First, the user can call pmcraid_chr_ioctl(), with a type
    PMCRAID_PASSTHROUGH_IOCTL. This calls through to
    pmcraid_ioctl_passthrough(). Next, a pmcraid_passthrough_ioctl_buffer
    is copied in, and the request_size variable is set to
    buffer->ioarcb.data_transfer_length, which is an arbitrary 32-bit
    signed value provided by the user. If a negative value is provided
    here, bad things can happen. For example,
    pmcraid_build_passthrough_ioadls() is called with this request_size,
    which immediately calls pmcraid_alloc_sglist() with a negative size.
    The resulting math on allocating a scatter list can result in an
    overflow in the kzalloc() call (if num_elem is 0, the sglist will be
    smaller than expected), or if num_elem is unexpectedly large the
    subsequent loop will call alloc_pages() repeatedly, a high number of
    pages will be allocated and the OOM killer might be invoked.

    It looks like preventing this value from being negative in
    pmcraid_ioctl_passthrough() would be sufficient.

    Signed-off-by: Dan Rosenberg
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: James Bottomley

    Dan Rosenberg
     

27 May, 2011

1 commit

  • * 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
    gfs2: Drop __TIME__ usage
    isdn/diva: Drop __TIME__ usage
    atm: Drop __TIME__ usage
    dlm: Drop __TIME__ usage
    wan/pc300: Drop __TIME__ usage
    parport: Drop __TIME__ usage
    hdlcdrv: Drop __TIME__ usage
    baycom: Drop __TIME__ usage
    pmcraid: Drop __DATE__ usage
    edac: Drop __DATE__ usage
    rio: Drop __DATE__ usage
    scsi/wd33c93: Drop __TIME__ usage
    scsi/in2000: Drop __TIME__ usage
    aacraid: Drop __TIME__ usage
    media/cx231xx: Drop __TIME__ usage
    media/radio-maxiradio: Drop __TIME__ usage
    nozomi: Drop __TIME__ usage
    cyclades: Drop __TIME__ usage

    Linus Torvalds
     

25 Apr, 2011

1 commit

  • There's a code path in pmcraid that can be reached via device ioctl that
    causes all sorts of ugliness, including heap corruption or triggering
    the OOM killer due to consecutive allocation of large numbers of pages.
    Not especially relevant from a security perspective, since users must
    have CAP_SYS_ADMIN to open the character device.

    First, the user can call pmcraid_chr_ioctl() with a type
    PMCRAID_PASSTHROUGH_IOCTL. A pmcraid_passthrough_ioctl_buffer
    is copied in, and the request_size variable is set to
    buffer->ioarcb.data_transfer_length, which is an arbitrary 32-bit signed
    value provided by the user.

    If a negative value is provided here, bad things can happen. For
    example, pmcraid_build_passthrough_ioadls() is called with this
    request_size, which immediately calls pmcraid_alloc_sglist() with a
    negative size. The resulting math on allocating a scatter list can
    result in an overflow in the kzalloc() call (if num_elem is 0, the
    sglist will be smaller than expected), or if num_elem is unexpectedly
    large the subsequent loop will call alloc_pages() repeatedly, a high
    number of pages will be allocated and the OOM killer might be invoked.

    Prevent this value from being negative in pmcraid_ioctl_passthrough().

    Signed-off-by: Dan Rosenberg
    Cc: stable@kernel.org
    Cc: Anil Ravindranath
    Signed-off-by: James Bottomley

    Dan Rosenberg
     

19 Apr, 2011

1 commit

  • The kernel already prints its build timestamp during boot, no need to
    repeat it in random drivers and produce different object files each
    time.

    Cc: Anil Ravindranath
    Cc: linux-scsi@vger.kernel.org
    Signed-off-by: Michal Marek

    Michal Marek
     

31 Mar, 2011

1 commit


13 Feb, 2011

1 commit

  • Simple conversions to drop flush_scheduled_work() usages in
    drivers/scsi. More involved ones will be done in separate patches.

    * NCR5380, megaraid_sas: cancel_delayed_work() +
    flush_scheduled_work() -> cancel_delayed_work_sync().

    * mpt2sas_scsih: drop unnecessary flush_scheduled_work().

    * arcmsr_hba, ipr, pmcraid: flush the used work explicitly instead of
    using flush_scheduled_work().

    Signed-off-by: Tejun Heo
    Signed-off-by: James Bottomley

    Tejun Heo
     

24 Dec, 2010

1 commit

  • pci_restore_state only ever returns 0, thus there is no benefit in
    having it return any value. Also, a large majority of the callers do
    not check the return code of pci_restore_state. Make the
    pci_restore_state a void return and avoid the overhead.

    Acked-by: Mauro Carvalho Chehab
    Signed-off-by: Jon Mason
    Signed-off-by: Jesse Barnes

    Jon Mason
     

09 Dec, 2010

1 commit


17 Nov, 2010

1 commit

  • Move the mid-layer's ->queuecommand() invocation from being locked
    with the host lock to being unlocked to facilitate speeding up the
    critical path for drivers who don't need this lock taken anyway.

    The patch below presents a simple SCSI host lock push-down as an
    equivalent transformation. No locking or other behavior should change
    with this patch. All existing bugs and locking orders are preserved.

    Additionally, add one parameter to queuecommand,
    struct Scsi_Host *
    and remove one parameter from queuecommand,
    void (*done)(struct scsi_cmnd *)

    Scsi_Host* is a convenient pointer that most host drivers need anyway,
    and 'done' is redundant to struct scsi_cmnd->scsi_done.

    Minimal code disturbance was attempted with this change. Most drivers
    needed only two one-line modifications for their host lock push-down.

    Signed-off-by: Jeff Garzik
    Acked-by: James Bottomley
    Signed-off-by: Linus Torvalds

    Jeff Garzik