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    Subject[PATCH 0/3] target/iblock: Add WRITE_SAME w/ UNMAP=0 emulation
    Date
    From: Nicholas Bellinger <nab@linux-iscsi.org>

    Hi folks,

    This series for-3.8 adds support for proper WRITE_SAME w/ UNMAP=0 emulation
    for IBLOCK device backends to follow MKP's WRITE_SAME patches that have
    been merged for v3.7-rc1.

    Currently it uses a bio_add_page() call for each sector in order to allow
    scatterlist w/ page offsets to work, as blkdev_issue_write_same() currently
    assumes underlying hw support + zero page offset.

    So far it has been tested on target-pending/for-next code with iscsi-target
    and tcm_loop fabric ports.

    Please review,

    --nab

    Nicholas Bellinger (3):
    target/sbc: Make WRITE_SAME check differentiate between UNMAP=[1,0]
    target: Add max_write_same_len device attribute
    target/iblock: Add WRITE_SAME w/ UNMAP=0 emulation support

    drivers/target/target_core_configfs.c | 4 ++
    drivers/target/target_core_device.c | 11 +++++
    drivers/target/target_core_iblock.c | 78 +++++++++++++++++++++++++++++---
    drivers/target/target_core_internal.h | 1 +
    drivers/target/target_core_sbc.c | 19 +++-----
    drivers/target/target_core_spc.c | 8 +++-
    include/target/target_core_base.h | 4 ++
    7 files changed, 104 insertions(+), 21 deletions(-)

    --
    1.7.2.5



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