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    Subject[GIT PULL] Block IO bits for 3.3-rc
    Hi Linus,

    See below for the initial 3.3-rc1 git pull request in the block IO area.
    Not too much queued up for this round, mostly some code churn to improve
    some of the existing functionality.

    It has the following changes:

    - The big io context cleanup from Tejun.

    - Remove duplicated block plug in mpage_readpages(). read_pages()
    already does the plugging, and it's the only call path to
    mpage_readpages().

    - ioctl to query rotational nature of a device from Martin.

    - Getting rid of the bio integrity macros, use proper functions instead.

    - Recursive merging was added and then disabled, it's suspected to be
    our cause for empty cfqq crashes. It'll be re-enabled once we get to
    the bottom of this.


    Please pull!


    git://git.kernel.dk/linux-block.git for-3.3/core


    Jens Axboe (2):
    block: ioc_cgroup_changed() needs to be exported
    Revert "block: recursive merge requests"

    Martin K. Petersen (3):
    block: Introduce blk_set_stacking_limits function
    block: Add BLKROTATIONAL ioctl
    block: Stop using macro stubs for the bio data integrity calls

    Namjae Jeon (1):
    fs: remove unneeded plug in mpage_readpages()

    Shaohua Li (2):
    block, cfq: fix empty queue crash caused by request merge
    block: recursive merge requests

    Stephen Rothwell (1):
    blockdev: convert some macros to static inlines

    Tejun Heo (28):
    block, sx8: kill blk_insert_request()
    block: add blk_queue_dead()`
    block: fix drain_all condition in blk_drain_queue()
    block: add missing blk_queue_dead() checks
    block, cfq: move cfqd->cic_index to q->id
    block: misc ioc cleanups
    block: make ioc get/put interface more conventional and fix race on alloction
    block: misc updates to blk_get_queue()
    block, cfq: misc updates to cfq_io_context
    block, cfq: move ioc ioprio/cgroup changed handling to cic
    block, cfq: fix race condition in cic creation path and tighten locking
    block, cfq: fix cic lookup locking
    block, cfq: unlink cfq_io_context's immediately
    block, cfq: remove delayed unlink
    block, cfq: kill ioc_gone
    block, cfq: kill cic->key
    block, cfq: replace current_io_context() with create_io_context()
    block: reorder elevator switch sequence
    block: remove elevator_queue->ops
    block, cfq: reorganize cfq_io_context into generic and cfq specific parts
    block, cfq: move cfqd->icq_list to request_queue and add request->elv.icq
    block, cfq: move io_cq lookup to blk-ioc.c
    block, cfq: move icq cache management to block core
    block, cfq: move io_cq exit/release to blk-ioc.c
    block, cfq: restructure io_cq creation path for io_context interface cleanup
    block, cfq: move icq creation and rq->elv.icq association to block core
    block: an exiting task should be allowed to create io_context
    block: remove WARN_ON_ONCE() in exit_io_context()

    block/blk-cgroup.c | 11 +-
    block/blk-core.c | 203 +++++++++------
    block/blk-exec.c | 8 +-
    block/blk-ioc.c | 485 +++++++++++++++++++++++++++++------
    block/blk-settings.c | 32 ++-
    block/blk-sysfs.c | 12 +-
    block/blk-throttle.c | 4 +-
    block/blk.h | 58 ++++-
    block/bsg.c | 4 +-
    block/cfq-iosched.c | 619 +++++++++------------------------------------
    block/compat_ioctl.c | 3 +
    block/deadline-iosched.c | 4 +-
    block/elevator.c | 217 ++++++++--------
    block/genhd.c | 2 +-
    block/ioctl.c | 2 +
    block/noop-iosched.c | 4 +-
    drivers/block/sx8.c | 12 +-
    drivers/md/dm-table.c | 6 +-
    drivers/md/md.c | 1 +
    drivers/scsi/scsi_scan.c | 2 +-
    fs/ioprio.c | 24 +--
    fs/mpage.c | 4 -
    include/linux/bio.h | 66 ++++-
    include/linux/blkdev.h | 101 ++++++--
    include/linux/elevator.h | 41 ++--
    include/linux/fs.h | 1 +
    include/linux/iocontext.h | 136 +++++++---
    kernel/fork.c | 8 +-
    28 files changed, 1133 insertions(+), 937 deletions(-)

    --
    Jens Axboe



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