Eric Lee / smarc-fsl-linux-kernel

24 Oct, 2011

1 commit

  • 02b1a7463   target: cleanup pscsi request submission ... Browse Code »

    Move the entirely request allocation, mapping and submission into ->do_task.
    This

    a) avoids blocking the I/O submission thread unessecarily, and
    b) simplifies the code greatly

    Note that the code seems to have various error handling issues, mostly
    related to bidi handling in the current form. I've added comments about
    those but not tried to fix them in this commit.

    Signed-off-by: Christoph Hellwig
    Signed-off-by: Nicholas Bellinger

    Christoph Hellwig
     

22 Jul, 2011

2 commits

  • 6708bb27b   target: Follow up core updates from AGrover and HCH (round 4) ... Browse Code »

    This patch contains the squashed version of forth round series cleanups
    from Andy and Christoph following the post heavy lifting in the preceeding:
    'Eliminate usage of struct se_mem' and 'Make all control CDBs scatter-gather'
    changes. This also includes a conversion of target core and the v3.0
    mainline fabric modules (loopback and tcm_fc) to use pr_debug and the
    CONFIG_DYNAMIC_DEBUG infrastructure!

    These have been squashed into this third and final round for v3.1.

    target: Remove ifdeffed code in t_g_process_write
    target: Remove direct ramdisk code
    target: Rename task_sg_num to task_sg_nents
    target: Remove custom debug macros for pr_debug. Use pr_err().
    target: Remove custom debug macros in mainline fabrics
    target: Set WSNZ=1 in block limits VPD. Abort if WRITE_SAME sectors = 0
    target: Remove transport do_se_mem_map callback
    target: Further simplify transport_free_pages
    target: Redo task allocation return value handling
    target: Remove extra parentheses
    target: change alloc_task call to take *cdb, not *cmd

    (nab: Fix bogus struct file assignments in fd_do_readv and fd_do_writev)

    Signed-off-by: Andy Grover
    Reviewed-by: Christoph Hellwig
    Signed-off-by: Nicholas Bellinger

    Andy Grover
     
  • e3d6f909e   target: Core cleanups from AGrover (round 1) ... Browse Code »

    This patch contains the squashed version of a number of cleanups and
    minor fixes from Andy's initial series (round 1) for target core this
    past spring. The condensed log looks like:

    target: use errno values instead of returning -1 for everything
    target: Rename transport_calc_sg_num to transport_init_task_sg
    target: Fix leak in error path in transport_init_task_sg
    target/pscsi: Remove pscsi_get_sh() usage
    target: Make two runtime checks into WARN_ONs
    target: Remove hba queue depth and convert to spin_lock_irq usage
    target: dev->dev_status_queue_obj is unused
    target: Make struct se_queue_req.cmd type struct se_cmd *
    target: Remove __transport_get_qr_from_queue()
    target: Rename se_dev->g_se_dev_list to se_dev_node
    target: Remove struct se_global
    target: Simplify scsi mib index table code
    target: Make dev_queue_obj a member of se_device instead of a pointer
    target: remove extraneous returns at end of void functions
    target: Ensure transport_dump_vpd_ident_type returns null-terminated str
    target: Function pointers don't need to use '&' to be assigned
    target: Fix comment in __transport_execute_tasks()
    target: Misc style cleanups
    target: rename struct pr_reservation_template to pr_reservation
    target: Remove #defines that just perform indirection
    target: Inline transport_get_task_from_execute_queue()
    target: Minor header comment fixes

    Signed-off-by: Andy Grover
    Signed-off-by: Nicholas Bellinger

    Andy Grover
     

15 Jan, 2011

1 commit

  • c66ac9db8   [SCSI] target: Add LIO target core v4.0.0-rc6 ... Browse Code »

    LIO target is a full featured in-kernel target framework with the
    following feature set:

    High-performance, non-blocking, multithreaded architecture with SIMD
    support.

    Advanced SCSI feature set:

    * Persistent Reservations (PRs)
    * Asymmetric Logical Unit Assignment (ALUA)
    * Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
    * Full Error Recovery (ERL=0,1,2)
    * Active/active task migration and session continuation (ERL=2)
    * Thin LUN provisioning (UNMAP and WRITE_SAMExx)

    Multiprotocol target plugins

    Storage media independence:

    * Virtualization of all storage media; transparent mapping of IO to LUNs
    * No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
    * Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.

    Standards compliance:

    * Full compliance with IETF (RFC 3720)
    * Full implementation of SPC-4 PRs and ALUA

    Significant code cleanups done by Christoph Hellwig.

    [jejb: fix up for new block bdev exclusive interface. Minor fixes from
    Randy Dunlap and Dan Carpenter.]
    Signed-off-by: Nicholas A. Bellinger
    Signed-off-by: James Bottomley

    Nicholas Bellinger