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Subject[GIT PULL] Block driver updates for 2.6.40
Hi Linus,

After the core bits, here are the drivers bits queued up
for 2.6.40.

- DRBD update

- Support for XEN blkback, a higher performance block device backend

- cciss update

- A few good bug fixes for loop

- Rest is mostly little fixes, comment fixes, etc.

Please pull!

git:// for-2.6.40/drivers

Andrew Morton (1):
drbd: fix warning

Bart Van Assche (1):
drbd: Fix spelling

Chris Lalancette (1):
xen/blkback: Flush blkback data when connecting.

Ian Campbell (1):
xen: rename blkbk module xen-blkback.

Jan Beulich (2):
xen/blkback: simplify address translations
xen/blkback: don't fail empty barrier requests

Jens Axboe (2):
cciss: fix compile issue
Merge branches 'for-jens/xen-backend-fixes' and 'for-jens/xen-blkback-v3.3' of git:// into for-2.6.40/drivers

Jeremy Fitzhardinge (8):
xen/blkback: don't include xen/evtchn.h
block: export blk_get/put_queue for blkback
xen/blkback: deal with hardsect_size to logical_block_size rename
xen/blkback: remove spurious debug output noise
xen/blkback: little cleanups
xen/blkback: use drv_get/set_drvdata rather than directly accessing driver_data.
xen/blkback: add accessor for xenbus backend device

K. Y. Srinivasan (2):
xen/blkback: Propagate changed size of VBDs
xen/blkback: Print additional information when a vbd is resized.

Kees Cook (1):
iosched: remove redundant sprintf

Keir Fraser (2):
blkback: Fix potential resource leak.
blkback: Fix CVE-2010-3699

Konrad Rzeszutek Wilk (58):
xen: add blkback support
Fix compile warnings: ignoring return value of 'xenbus_register_backend' ..
xen/blkback: Replace WRITE_BARRIER with (REQ_FLUSH | REQ_FUA)
xen/blkback: Update to use blkdev_get_by_dev instead of open_by_devnum.
xen/blkback: Move global/static variables into struct xen_blkbk.
xen/blkback: Union the blkif_request request specific fields
xen/blkback: Use 'vzalloc' for page arrays and pre-allocate pages.
xen/blkback: Utilize the M2P override mechanism for GNTMAP_host_map
xen/blkback: Use kzalloc's, and GFP_KERNEL for data structures.
xen/blkback: Add some comments.
xen/blkback: blkif->struct blkif_st
xen/blkback: Fix checkpatch warnings in vbd.c
xen/blkback: Fix interface.c checkpatch warnings .. except
xen/blkback: Fix checkpatch warnings of xenbus.c
xen/blkback: Fix checkpatch warnings in blkback.c
xen/blkback: remove per-queue plugging
xen/blkback: Seperate the bio allocation and the bio submission.
xen/blkback: Cleanup move the code a bit around.
xen/blkback: Shuffle code around (vbd_translate moved higher).
xen/blkback: Move the check for misaligned I/O higher.
xen/blkback: Change fast_flush_area to xen_blkbk_unmap, and tweak xen_blk_map_seg.
xen/blkback: Move the check for misaligned I/O once more.
xen/blkback: Get the 'requeust_queue' properly.
block, xen/blkback: remove blk_[get|put]_queue calls.
xen/blkback: Move it from drivers/xen to drivers/block
xen/blkback: Squash vbd.c,interface.c in blkback.c and xenbus.c respectivly.
xen-blkback: Remove from the copyright notice the address.
xen-blkback: Inline some of the functions that were moved from vbd/interface.c
xen/blkback: Prefix exposed functions with xen_
xen/blkback: Move the plugging/unplugging to a higher level.
xen/blkback: Stick REQ_SYNC on WRITEs to deal with CFQ I/O scheduler.
Revert "xen/blkback: Move the plugging/unplugging to a higher level."
xen-blkfront: Provide for 'feature-flush-cache' the BLKIF_OP_WRITE_FLUSH_CACHE operation.
xen/blkback: Add support for BLKIF_OP_FLUSH_DISKCACHE and drop BLKIF_OP_WRITE_BARRIER.
xen/blkback: Squash the checking for operation into dispatch_rw_block_io
xen/blkback: Fix up some of the comments.
xen/blkback: Fixed up comments and converted spaces to tabs.
xen-blkfront: Provide for 'feature-flush-cache' the BLKIF_OP_WRITE_FLUSH_CACHE operation.
xen-blkfront: Introduce BLKIF_OP_FLUSH_DISKCACHE support.
xen/blkback: Change printk/DPRINTK to pr_.. type variant.
xen/blkback: Make the DPRINTK uniform.
xen/blkback: Use the DRV_PFX in the pr_.. macros.
xen/blkback: Removing the debug_lvl option.
xen/blkback: Move blkif_get_x86_[32|64]_req to common.h in block/xen-blkback dir.
xen/blkback: Fix spelling mistakes.
xen/blkback: Flesh out the description in the Kconfig.
xen/blkback: Fix warnings about more than 80 lines.
xen/blkback: recommend against multiple assigments.
xen/blkback: Fixing some more of the warnings.
xen/blkback: Move include/xen/blkif.h into drivers/block/xen-blkback/common.h
xen/blkback: Remove the unused typedefs.
xen/blkback: Change structure name blkif_st to xen_blkif.
xen/blkback: Prefix 'vbd' with 'xen' in structs and functions.
xen/blkback: Add the prefix XEN in the common.h.
xen/blkback: if log_stats is enabled print out the data.
xen/blkback: Align the tabs on the structure.
xen/p2m/m2p/gnttab: Support GNTMAP_host_map in the M2P override.
xen/p2m: Add EXPORT_SYMBOL_GPL to the M2P override functions.

Lars Ellenberg (5):
lru_cache.h: fix comments referring to ts_ instead of lc_
drbd: fix potential distributed deadlock
drbd: fix disconnect/reconnect loop, if ping-timeout == ping-int
drbd: fix potential activity log refcount imbalance in error path
drbd: fix schedule in atomic

Laszlo Ersek (1):
xen/blkback: fix xenbus_transaction_start() hang caused by double xenbus_transaction_end()

Marek Marczykowski (1):
xen-blkfront: fix data size for xenbus_gather in blkfront_connect

Namhyung Kim (2):
loop: limit 'max_part' module param to DISK_MAX_PARTS
loop: handle on-demand devices correctly

Philipp Reisner (7):
drbd: Fix for application IO with the on-io-error=pass-on policy
drbd: Only downgrade the disk state in case of disk failures
drbd: Fix for the connection problems on high latency links
drbd: Disallow the peer_disk_state to be D_OUTDATED while connected
drbd: Fixed state transitions after async outdate-peer-handler returned
drbd: Take a more conservative approach when deciding max_bio_size
drbd: fix warning

Stephen M. Cameron (16):
cciss: add readl after writel in interrupt mask setting code
cciss: do a better job of detecting controller reset failure
cciss: factor out command pool allocation functions
cciss: factor out scatterlist allocation functions
cciss: factor out irq request code
cciss: fix reply pool and block fetch table memory leaks
cciss: get rid of message related magic numbers
cciss: increase time to wait for board reset to start
cciss: clarify messages around reset behavior
cciss: increase timeouts for post-reset no-ops
cciss: use new doorbell-bit-5 reset method
cciss: do soft reset if hard reset is broken
cciss: remove superfluous sleeps around reset code
cciss: do not attempt PCI power management reset method if we know it won't work.
cciss: do not use bit 2 doorbell reset
cciss: add cciss_tape_cmds module paramter

Tao Ma (1):
block: Remove 'plug/unplug' comment in blk_execute_rq_nowait

Tejun Heo (3):
cdrom: always check_disk_change() on open
block: rescan partitions on invalidated devices on -ENOMEDIA too
block: don't block events on excl write for non-optical devices

Tom Goetz (1):
xen/blkback: Fix the WRITE_BARRIER

Documentation/blockdev/cciss.txt | 15 +
arch/x86/include/asm/xen/page.h | 5 +-
arch/x86/xen/p2m.c | 13 +-
block/blk-exec.c | 2 +-
block/elevator.c | 7 +-
drivers/block/Kconfig | 21 +
drivers/block/Makefile | 1 +
drivers/block/cciss.c | 571 +++++++++++++++++++-----
drivers/block/cciss.h | 11 +-
drivers/block/cciss_cmd.h | 11 +
drivers/block/cciss_scsi.c | 41 +-
drivers/block/cciss_scsi.h | 4 -
drivers/block/drbd/drbd_actlog.c | 2 +-
drivers/block/drbd/drbd_bitmap.c | 6 +-
drivers/block/drbd/drbd_int.h | 19 +-
drivers/block/drbd/drbd_main.c | 37 ++-
drivers/block/drbd/drbd_nl.c | 127 ++++--
drivers/block/drbd/drbd_receiver.c | 68 ++--
drivers/block/drbd/drbd_req.c | 20 +-
drivers/block/drbd/drbd_req.h | 5 +-
drivers/block/drbd/drbd_worker.c | 98 +++--
drivers/block/loop.c | 11 +-
drivers/block/paride/pcd.c | 1 +
drivers/block/xen-blkback/Makefile | 3 +
drivers/block/xen-blkback/blkback.c | 824 +++++++++++++++++++++++++++++++++++
drivers/block/xen-blkback/common.h | 233 ++++++++++
drivers/block/xen-blkback/xenbus.c | 768 ++++++++++++++++++++++++++++++++
drivers/block/xen-blkfront.c | 51 ++-
drivers/cdrom/cdrom.c | 6 +-
drivers/cdrom/viocd.c | 3 +-
drivers/ide/ide-cd.c | 2 +-
drivers/scsi/sr.c | 2 +-
drivers/xen/grant-table.c | 31 +-
fs/block_dev.c | 44 ++-
include/linux/drbd.h | 10 +-
include/linux/drbd_tag_magic.h | 2 +-
include/linux/genhd.h | 1 +
include/linux/lru_cache.h | 12 +-
include/xen/interface/io/blkif.h | 13 +
39 files changed, 2749 insertions(+), 352 deletions(-)
create mode 100644 drivers/block/xen-blkback/Makefile
create mode 100644 drivers/block/xen-blkback/blkback.c
create mode 100644 drivers/block/xen-blkback/common.h
create mode 100644 drivers/block/xen-blkback/xenbus.c

Jens Axboe

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