[GIT PULL] Core block IO changes for 3.20

From: Jens Axboe
Date: Thu Feb 12 2015 - 15:48:45 EST


Hi Linus,

This pull request is for the core block IO changes. It contains:

- A series from Christoph that cleans up and refactors various parts of
the REQ_BLOCK_PC handling. Contributions in that series form Dongsu
Park and Kent Overstreet as well.

- CFQ:
- A bug fix for cfq for realtime IO scheduling from Jeff Moyer.
- A stable patch fixing a potential crash in CFQ in OOM
situations. From Konstantin Khlebnikov.

- blk-mq:
- Add support for tag allocation policies, from Shaohua. This is
a prep patch enabling libata (and other SCSI parts) to use the
blk-mq tagging, instead of rolling their own.
- Various little tweaks from Keith and Mike, in preparation for
DM blk-mq support.
- Minor little fixes or tweaks from me.
- A double free error fix from Tony Battersby.

- The partition 4k issue fixes from Matthew and Boaz.

- Add support for zero+unprovision for blkdev_issue_zeroout() from
Martin.


Please pull!


git://git.kernel.dk/linux-block.git for-3.20/core

----------------------------------------------------------------
Boaz Harrosh (1):
block: Remove annoying "unknown partition table" message

Christoph Hellwig (7):
block: simplify bio_map_kern
block: use blk_rq_map_user_iov to implement blk_rq_map_user
block: add a helper to free bio bounce buffer pages
block: merge __bio_map_kern into bio_map_kern
block: merge __bio_map_user_iov into bio_map_user_iov
block: handle the null_mapped flag correctly in blk_rq_map_user_iov
block: remove unused function blk_bio_map_sg

Dongsu Park (1):
block: rewrite and split __bio_copy_iov()

Jeff Moyer (1):
cfq-iosched: fix incorrect filing of rt async cfqq

Jens Axboe (4):
Merge tag 'v3.19-rc2' into for-3.20/core
blk-mq: export blk_mq_freeze_queue()
blk-mq: fix false negative out-of-tags condition
blk-mq: make blk_mq_run_queues() static

Keith Busch (4):
block: require blk_rq_prep_clone() be given an initialized clone request
block: add blk-mq support to blk_insert_cloned_request()
block: keep established cmd_flags when cloning into a blk-mq request
block: prevent request-to-request merging with gaps if not allowed

Kent Overstreet (1):
block: pass iov_iter to the BLOCK_PC mapping functions

Konstantin Khlebnikov (1):
cfq-iosched: handle failure of cfq group allocation

Martin K. Petersen (2):
block: Add discard flag to blkdev_issue_zeroout() function
block: Quiesce zeroout wrapper

Matthew Wilcox (1):
block: Change direct_access calling convention

Mike Snitzer (2):
block: mark blk-mq devices as stackable
dm: fix multipath regression due to initializing wrong request

Shaohua Li (2):
block: support different tag allocation policy
blk-mq: add tag allocation policy

Tony Battersby (1):
blk-mq: fix double-free in error path

Documentation/filesystems/xip.txt | 15 +-
arch/powerpc/sysdev/axonram.c | 17 +-
block/bio.c | 426 ++++++++++++++++++---------------------
block/blk-core.c | 11 +-
block/blk-lib.c | 30 ++-
block/blk-map.c | 172 +++-------------
block/blk-merge.c | 41 ++--
block/blk-mq-tag.c | 81 +++++---
block/blk-mq-tag.h | 4 +-
block/blk-mq.c | 13 +-
block/blk-tag.c | 33 ++-
block/cfq-iosched.c | 16 +-
block/ioctl.c | 2 +-
block/partitions/check.c | 12 +-
block/scsi_ioctl.c | 17 +-
drivers/block/brd.c | 14 +-
drivers/block/drbd/drbd_receiver.c | 2 +-
drivers/block/osdblk.c | 2 +-
drivers/md/dm.c | 1 +
drivers/s390/block/dcssblk.c | 21 +-
drivers/scsi/scsi_lib.c | 2 +
drivers/scsi/scsi_scan.c | 3 +-
drivers/scsi/sg.c | 15 +-
fs/block_dev.c | 40 ++++
fs/ext2/xip.c | 31 ++-
include/linux/bio.h | 12 +-
include/linux/blk-mq.h | 10 +-
include/linux/blkdev.h | 25 ++-
include/scsi/scsi_host.h | 3 +
include/scsi/scsi_tcq.h | 3 +-
30 files changed, 499 insertions(+), 575 deletions(-)

--
Jens Axboe

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