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Subject[PATCHv2 0/4] Userspace Passthrough backstore for LIO
Date
Hi Nick and all,

Here's version 2, against Nick's target-pending/for-next. Note that
since that tree is still on 3.17-rc5, in testing I ran into an issue
fixed by:

genhd: fix leftover might_sleep() in blk_free_devt()

which first appears in 3.17-rc7.

Incorporates feedback from Nick.

Doc fixes
* add table of contents
* add example code for the user-side
* document specific opcodes that IO mode passes through

Code fixes
* add back support for PASS_ALL and PASS_IO pass_level option.
* Removed retry-in-kernel mechanism
* fix issues from kbuild test robot
* remove kref from tcmu_dev and call kfree(udev) from tcmu_free_device
instead
* set hw_block_size to 512 instead of 4096
* Don't copy DMA_FROM_DEVICE data if there was a CHECK_CONDITION
* use goto-style error handling in tcmu_configure_device
* Check retval from genlmsg_multicast and ignore -ESRCH
* properly handle if device is unconfigured in tcmu_free_device

Thanks -- Andy

Andy Grover (4):
target: Remove unneeded check in sbc_parse_cdb
uio: Export definition of struct uio_device
target: Add documentation on the target userspace pass-through driver
target: Add a user-passthrough backstore

Documentation/target/tcmu-design.txt | 378 +++++++++++
drivers/target/Kconfig | 5 +
drivers/target/Makefile | 1 +
drivers/target/target_core_sbc.c | 2 +-
drivers/target/target_core_transport.c | 4 +
drivers/target/target_core_user.c | 1163 ++++++++++++++++++++++++++++++++
drivers/uio/uio.c | 12 -
include/linux/uio_driver.h | 12 +-
include/uapi/linux/Kbuild | 1 +
include/uapi/linux/target_core_user.h | 142 ++++
10 files changed, 1706 insertions(+), 14 deletions(-)
create mode 100644 Documentation/target/tcmu-design.txt
create mode 100644 drivers/target/target_core_user.c
create mode 100644 include/uapi/linux/target_core_user.h

--
1.9.3



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